/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 12:13:37,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 12:13:37,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 12:13:37,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 12:13:37,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 12:13:37,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 12:13:37,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 12:13:37,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 12:13:37,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 12:13:37,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 12:13:37,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 12:13:37,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 12:13:37,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 12:13:37,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 12:13:37,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 12:13:37,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 12:13:37,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 12:13:37,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 12:13:37,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 12:13:37,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 12:13:37,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 12:13:37,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 12:13:37,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 12:13:37,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 12:13:37,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 12:13:37,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 12:13:37,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 12:13:37,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 12:13:37,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 12:13:37,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 12:13:37,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 12:13:37,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 12:13:37,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 12:13:37,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 12:13:37,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 12:13:37,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 12:13:37,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 12:13:37,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 12:13:37,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 12:13:37,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 12:13:37,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 12:13:37,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 12:13:37,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 12:13:37,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 12:13:37,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 12:13:37,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 12:13:37,528 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 12:13:37,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 12:13:37,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 12:13:37,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 12:13:37,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 12:13:37,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 12:13:37,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 12:13:37,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 12:13:37,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 12:13:37,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 12:13:37,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 12:13:37,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 12:13:37,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 12:13:37,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 12:13:37,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 12:13:37,780 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 12:13:37,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i [2021-03-11 12:13:37,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ee45b6c/cc15e94e77ff4a48b38d7bd5a8fd95d9/FLAGfc00bb197 [2021-03-11 12:13:38,254 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 12:13:38,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i [2021-03-11 12:13:38,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ee45b6c/cc15e94e77ff4a48b38d7bd5a8fd95d9/FLAGfc00bb197 [2021-03-11 12:13:38,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ee45b6c/cc15e94e77ff4a48b38d7bd5a8fd95d9 [2021-03-11 12:13:38,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 12:13:38,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 12:13:38,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 12:13:38,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 12:13:38,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 12:13:38,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2043b10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38, skipping insertion in model container [2021-03-11 12:13:38,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 12:13:38,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 12:13:38,457 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 12:13:38,643 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39095,39108] [2021-03-11 12:13:38,646 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39180,39193] [2021-03-11 12:13:38,649 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39232,39245] [2021-03-11 12:13:38,675 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49285,49298] [2021-03-11 12:13:38,675 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49334,49347] [2021-03-11 12:13:38,676 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49462,49475] [2021-03-11 12:13:38,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49520,49533] [2021-03-11 12:13:38,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 12:13:38,683 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 12:13:38,690 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-11 12:13:38,703 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39095,39108] [2021-03-11 12:13:38,703 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39180,39193] [2021-03-11 12:13:38,704 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39232,39245] [2021-03-11 12:13:38,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49285,49298] [2021-03-11 12:13:38,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49334,49347] [2021-03-11 12:13:38,711 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49462,49475] [2021-03-11 12:13:38,712 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49520,49533] [2021-03-11 12:13:38,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 12:13:38,810 INFO L208 MainTranslator]: Completed translation [2021-03-11 12:13:38,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38 WrapperNode [2021-03-11 12:13:38,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 12:13:38,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 12:13:38,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 12:13:38,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 12:13:38,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 12:13:38,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 12:13:38,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 12:13:38,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 12:13:38,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... [2021-03-11 12:13:38,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 12:13:38,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 12:13:38,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 12:13:38,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 12:13:38,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2021-03-11 12:13:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2021-03-11 12:13:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 12:13:38,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 12:13:38,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 12:13:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 12:13:38,936 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 12:13:39,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 12:13:39,374 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-03-11 12:13:39,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 12:13:39 BoogieIcfgContainer [2021-03-11 12:13:39,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 12:13:39,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 12:13:39,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 12:13:39,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 12:13:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 12:13:38" (1/3) ... [2021-03-11 12:13:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7985e308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 12:13:39, skipping insertion in model container [2021-03-11 12:13:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 12:13:38" (2/3) ... [2021-03-11 12:13:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7985e308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 12:13:39, skipping insertion in model container [2021-03-11 12:13:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 12:13:39" (3/3) ... [2021-03-11 12:13:39,379 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2021-03-11 12:13:39,383 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 12:13:39,383 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 12:13:39,386 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-11 12:13:39,387 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 12:13:39,412 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,413 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,414 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,415 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,416 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,417 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,418 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,419 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,420 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,421 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,422 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,423 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,424 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,425 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,426 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,427 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,428 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,429 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,430 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,431 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,432 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,433 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,434 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,435 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,436 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,437 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,438 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,439 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,440 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,442 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,442 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,442 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,442 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,443 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,444 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,444 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,444 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,452 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,453 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,454 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,455 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,456 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,457 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,458 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,459 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,460 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,461 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,462 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,463 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,464 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,465 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,466 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,466 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,466 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,466 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#t~pre19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,466 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#t~pre19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#t~pre19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,467 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#t~pre19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,469 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,469 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,469 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_~#read~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~ret24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~r~2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,470 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~i~3 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,471 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~mem28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~val~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#t~pre30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,472 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe reader_twoThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,473 WARN L313 ript$VariableManager]: TermVariabe |reader_twoThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,477 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,477 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,477 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,477 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,477 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#t~pre19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,478 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,479 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~r~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,479 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,479 WARN L313 ript$VariableManager]: TermVariabe |writer_fnThread1of1ForFork1_ring_enqueue_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,479 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_ring_enqueue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,479 WARN L313 ript$VariableManager]: TermVariabe writer_fnThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 12:13:39,507 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 12:13:39,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-03-11 12:13:39,543 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 12:13:39,543 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 12:13:39,543 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 12:13:39,543 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 12:13:39,543 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 12:13:39,544 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 12:13:39,544 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 12:13:39,544 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 12:13:39,556 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 12:13:39,561 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 200 transitions, 422 flow [2021-03-11 12:13:39,563 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 200 transitions, 422 flow [2021-03-11 12:13:39,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 200 transitions, 422 flow [2021-03-11 12:13:39,612 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2021-03-11 12:13:39,615 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 12:13:39,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 200 events. 18/200 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 434 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 163. Up to 3 conditions per place. [2021-03-11 12:13:39,629 INFO L116 LiptonReduction]: Number of co-enabled transitions 15102 [2021-03-11 12:13:43,702 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2021-03-11 12:13:43,831 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-03-11 12:13:44,107 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2021-03-11 12:13:44,225 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-03-11 12:13:44,431 INFO L131 LiptonReduction]: Checked pairs total: 39122 [2021-03-11 12:13:44,431 INFO L133 LiptonReduction]: Total number of compositions: 179 [2021-03-11 12:13:44,437 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 64 transitions, 150 flow [2021-03-11 12:13:44,520 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2096 states, 2091 states have (on average 3.5131516021042564) internal successors, (7346), 2095 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 2096 states, 2091 states have (on average 3.5131516021042564) internal successors, (7346), 2095 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 12:13:44,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:44,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:44,540 INFO L428 AbstractCegarLoop]: === Iteration 1 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:44,546 INFO L82 PathProgramCache]: Analyzing trace with hash -768643925, now seen corresponding path program 1 times [2021-03-11 12:13:44,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:44,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582022996] [2021-03-11 12:13:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:44,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:44,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:44,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:44,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:44,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582022996] [2021-03-11 12:13:44,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:44,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 12:13:44,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920795812] [2021-03-11 12:13:44,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 12:13:44,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:44,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 12:13:44,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 12:13:44,690 INFO L87 Difference]: Start difference. First operand has 2096 states, 2091 states have (on average 3.5131516021042564) internal successors, (7346), 2095 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:44,736 INFO L93 Difference]: Finished difference Result 2096 states and 6739 transitions. [2021-03-11 12:13:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 12:13:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 12:13:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:44,764 INFO L225 Difference]: With dead ends: 2096 [2021-03-11 12:13:44,764 INFO L226 Difference]: Without dead ends: 1980 [2021-03-11 12:13:44,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 12:13:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-03-11 12:13:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1980. [2021-03-11 12:13:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1976 states have (on average 3.242408906882591) internal successors, (6407), 1979 states have internal predecessors, (6407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 6407 transitions. [2021-03-11 12:13:44,881 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 6407 transitions. Word has length 13 [2021-03-11 12:13:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:44,881 INFO L480 AbstractCegarLoop]: Abstraction has 1980 states and 6407 transitions. [2021-03-11 12:13:44,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 6407 transitions. [2021-03-11 12:13:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-03-11 12:13:44,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:44,885 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:44,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 12:13:44,885 INFO L428 AbstractCegarLoop]: === Iteration 2 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:44,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:44,886 INFO L82 PathProgramCache]: Analyzing trace with hash -457945404, now seen corresponding path program 1 times [2021-03-11 12:13:44,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:44,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574196668] [2021-03-11 12:13:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:45,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:13:45,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:13:45,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:13:45,073 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.8 percent of original size [2021-03-11 12:13:45,077 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.1 percent of original size 41 [2021-03-11 12:13:45,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:45,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574196668] [2021-03-11 12:13:45,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:45,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 12:13:45,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445829380] [2021-03-11 12:13:45,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 12:13:45,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:45,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 12:13:45,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 12:13:45,106 INFO L87 Difference]: Start difference. First operand 1980 states and 6407 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:45,270 INFO L93 Difference]: Finished difference Result 1968 states and 6381 transitions. [2021-03-11 12:13:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 12:13:45,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-03-11 12:13:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:45,279 INFO L225 Difference]: With dead ends: 1968 [2021-03-11 12:13:45,279 INFO L226 Difference]: Without dead ends: 1968 [2021-03-11 12:13:45,279 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-11 12:13:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-03-11 12:13:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1968. [2021-03-11 12:13:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1964 states have (on average 3.2489816700610996) internal successors, (6381), 1967 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 6381 transitions. [2021-03-11 12:13:45,323 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 6381 transitions. Word has length 17 [2021-03-11 12:13:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:45,326 INFO L480 AbstractCegarLoop]: Abstraction has 1968 states and 6381 transitions. [2021-03-11 12:13:45,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 6381 transitions. [2021-03-11 12:13:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 12:13:45,333 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:45,333 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:45,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 12:13:45,333 INFO L428 AbstractCegarLoop]: === Iteration 3 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1706151855, now seen corresponding path program 1 times [2021-03-11 12:13:45,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:45,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272813644] [2021-03-11 12:13:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:45,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:13:45,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:13:45,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:13:45,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:13:45,420 INFO L142 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size [2021-03-11 12:13:45,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:13:45,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:45,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272813644] [2021-03-11 12:13:45,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 12:13:45,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704168884] [2021-03-11 12:13:45,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 12:13:45,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:45,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 12:13:45,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 12:13:45,435 INFO L87 Difference]: Start difference. First operand 1968 states and 6381 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:45,734 INFO L93 Difference]: Finished difference Result 2800 states and 9204 transitions. [2021-03-11 12:13:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 12:13:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-03-11 12:13:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:45,745 INFO L225 Difference]: With dead ends: 2800 [2021-03-11 12:13:45,745 INFO L226 Difference]: Without dead ends: 2756 [2021-03-11 12:13:45,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.1ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-11 12:13:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-03-11 12:13:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2544. [2021-03-11 12:13:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2540 states have (on average 3.275196850393701) internal successors, (8319), 2543 states have internal predecessors, (8319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 8319 transitions. [2021-03-11 12:13:45,804 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 8319 transitions. Word has length 18 [2021-03-11 12:13:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:45,804 INFO L480 AbstractCegarLoop]: Abstraction has 2544 states and 8319 transitions. [2021-03-11 12:13:45,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 8319 transitions. [2021-03-11 12:13:45,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-03-11 12:13:45,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:45,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:45,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 12:13:45,807 INFO L428 AbstractCegarLoop]: === Iteration 4 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash -753341569, now seen corresponding path program 2 times [2021-03-11 12:13:45,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:45,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960037956] [2021-03-11 12:13:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:45,932 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-11 12:13:45,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:13:45,943 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-11 12:13:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:13:45,952 INFO L142 QuantifierPusher]: treesize reduction 16, result has 57.9 percent of original size [2021-03-11 12:13:45,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:13:45,963 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:13:45,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:45,980 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-03-11 12:13:45,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:13:45,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:45,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960037956] [2021-03-11 12:13:45,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:45,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 12:13:45,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828725209] [2021-03-11 12:13:45,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 12:13:45,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:45,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 12:13:45,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-11 12:13:45,996 INFO L87 Difference]: Start difference. First operand 2544 states and 8319 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:46,252 INFO L93 Difference]: Finished difference Result 2514 states and 8187 transitions. [2021-03-11 12:13:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 12:13:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-03-11 12:13:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:46,263 INFO L225 Difference]: With dead ends: 2514 [2021-03-11 12:13:46,263 INFO L226 Difference]: Without dead ends: 2510 [2021-03-11 12:13:46,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-11 12:13:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2021-03-11 12:13:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2461. [2021-03-11 12:13:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2457 states have (on average 3.264957264957265) internal successors, (8022), 2460 states have internal predecessors, (8022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 8022 transitions. [2021-03-11 12:13:46,320 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 8022 transitions. Word has length 18 [2021-03-11 12:13:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:46,321 INFO L480 AbstractCegarLoop]: Abstraction has 2461 states and 8022 transitions. [2021-03-11 12:13:46,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 8022 transitions. [2021-03-11 12:13:46,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:46,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:46,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:46,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 12:13:46,324 INFO L428 AbstractCegarLoop]: === Iteration 5 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2103366938, now seen corresponding path program 1 times [2021-03-11 12:13:46,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:46,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550400349] [2021-03-11 12:13:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:46,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:13:46,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:13:46,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:13:46,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:46,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:46,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:46,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-03-11 12:13:46,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:46,514 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.8 percent of original size [2021-03-11 12:13:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:13:46,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-03-11 12:13:46,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:46,544 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:13:46,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:13:46,560 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.2 percent of original size [2021-03-11 12:13:46,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:13:46,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:13:46,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:13:46,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:46,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:46,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550400349] [2021-03-11 12:13:46,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:46,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:46,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511376247] [2021-03-11 12:13:46,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:46,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:46,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:46,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:46,597 INFO L87 Difference]: Start difference. First operand 2461 states and 8022 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:48,123 INFO L93 Difference]: Finished difference Result 3011 states and 9751 transitions. [2021-03-11 12:13:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:13:48,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:48,136 INFO L225 Difference]: With dead ends: 3011 [2021-03-11 12:13:48,136 INFO L226 Difference]: Without dead ends: 3011 [2021-03-11 12:13:48,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 812.5ms TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2021-03-11 12:13:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-03-11 12:13:48,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2938. [2021-03-11 12:13:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2934 states have (on average 3.267211997273347) internal successors, (9586), 2937 states have internal predecessors, (9586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 9586 transitions. [2021-03-11 12:13:48,190 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 9586 transitions. Word has length 25 [2021-03-11 12:13:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:48,191 INFO L480 AbstractCegarLoop]: Abstraction has 2938 states and 9586 transitions. [2021-03-11 12:13:48,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 9586 transitions. [2021-03-11 12:13:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:48,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:48,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:48,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 12:13:48,195 INFO L428 AbstractCegarLoop]: === Iteration 6 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:48,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2115259858, now seen corresponding path program 2 times [2021-03-11 12:13:48,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:48,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512769315] [2021-03-11 12:13:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:48,280 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:13:48,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:13:48,287 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:13:48,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:13:48,296 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:13:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:13:48,307 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:48,316 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:48,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:48,326 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:48,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:48,337 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:13:48,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:48,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:13:48,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:48,365 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:13:48,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:13:48,391 INFO L142 QuantifierPusher]: treesize reduction 52, result has 41.6 percent of original size [2021-03-11 12:13:48,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:48,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:48,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:13:48,416 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:13:48,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:13:48,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:48,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:48,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:48,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:48,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512769315] [2021-03-11 12:13:48,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:48,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:13:48,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138502163] [2021-03-11 12:13:48,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:13:48,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:13:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:13:48,434 INFO L87 Difference]: Start difference. First operand 2938 states and 9586 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:49,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:49,689 INFO L93 Difference]: Finished difference Result 3214 states and 10431 transitions. [2021-03-11 12:13:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 12:13:49,689 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:49,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:49,703 INFO L225 Difference]: With dead ends: 3214 [2021-03-11 12:13:49,703 INFO L226 Difference]: Without dead ends: 3214 [2021-03-11 12:13:49,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 718.5ms TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2021-03-11 12:13:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2021-03-11 12:13:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3078. [2021-03-11 12:13:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3074 states have (on average 3.266102797657775) internal successors, (10040), 3077 states have internal predecessors, (10040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 10040 transitions. [2021-03-11 12:13:49,767 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 10040 transitions. Word has length 25 [2021-03-11 12:13:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:49,768 INFO L480 AbstractCegarLoop]: Abstraction has 3078 states and 10040 transitions. [2021-03-11 12:13:49,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 10040 transitions. [2021-03-11 12:13:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:49,772 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:49,772 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:49,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 12:13:49,772 INFO L428 AbstractCegarLoop]: === Iteration 7 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:49,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:49,773 INFO L82 PathProgramCache]: Analyzing trace with hash -206310250, now seen corresponding path program 1 times [2021-03-11 12:13:49,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:49,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290282966] [2021-03-11 12:13:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:49,829 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size [2021-03-11 12:13:49,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:13:49,839 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.8 percent of original size [2021-03-11 12:13:49,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:13:49,853 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.8 percent of original size [2021-03-11 12:13:49,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:13:49,872 INFO L142 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size [2021-03-11 12:13:49,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:49,888 INFO L142 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size [2021-03-11 12:13:49,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:49,904 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:13:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:49,931 INFO L142 QuantifierPusher]: treesize reduction 416, result has 18.4 percent of original size [2021-03-11 12:13:49,931 INFO L147 QuantifierPusher]: treesize reduction 22, result has 76.6 percent of original size 72 [2021-03-11 12:13:49,955 INFO L142 QuantifierPusher]: treesize reduction 24, result has 74.7 percent of original size [2021-03-11 12:13:49,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:13:49,983 INFO L142 QuantifierPusher]: treesize reduction 29, result has 56.1 percent of original size [2021-03-11 12:13:49,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:49,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:49,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:13:50,006 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:13:50,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:50,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:50,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:50,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:50,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:50,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290282966] [2021-03-11 12:13:50,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:50,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:13:50,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874087834] [2021-03-11 12:13:50,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:13:50,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:50,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:13:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:13:50,025 INFO L87 Difference]: Start difference. First operand 3078 states and 10040 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:51,000 INFO L93 Difference]: Finished difference Result 3628 states and 11704 transitions. [2021-03-11 12:13:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-11 12:13:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:51,009 INFO L225 Difference]: With dead ends: 3628 [2021-03-11 12:13:51,009 INFO L226 Difference]: Without dead ends: 3628 [2021-03-11 12:13:51,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 600.6ms TimeCoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2021-03-11 12:13:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2021-03-11 12:13:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 3568. [2021-03-11 12:13:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3564 states have (on average 3.2474747474747474) internal successors, (11574), 3567 states have internal predecessors, (11574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 11574 transitions. [2021-03-11 12:13:51,065 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 11574 transitions. Word has length 25 [2021-03-11 12:13:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:51,066 INFO L480 AbstractCegarLoop]: Abstraction has 3568 states and 11574 transitions. [2021-03-11 12:13:51,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 11574 transitions. [2021-03-11 12:13:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:51,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:51,070 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:51,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 12:13:51,070 INFO L428 AbstractCegarLoop]: === Iteration 8 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:51,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1032534382, now seen corresponding path program 3 times [2021-03-11 12:13:51,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:51,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162418650] [2021-03-11 12:13:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:51,108 INFO L142 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-03-11 12:13:51,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:13:51,115 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:13:51,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:51,132 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:13:51,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:13:51,151 INFO L142 QuantifierPusher]: treesize reduction 16, result has 65.2 percent of original size [2021-03-11 12:13:51,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:51,162 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-03-11 12:13:51,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:13:51,172 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-03-11 12:13:51,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:13:51,183 INFO L142 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-03-11 12:13:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:13:51,196 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.0 percent of original size [2021-03-11 12:13:51,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:51,211 INFO L142 QuantifierPusher]: treesize reduction 33, result has 48.4 percent of original size [2021-03-11 12:13:51,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:13:51,227 INFO L142 QuantifierPusher]: treesize reduction 19, result has 61.2 percent of original size [2021-03-11 12:13:51,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:51,249 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:13:51,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:13:51,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:13:51,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:13:51,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:51,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:51,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162418650] [2021-03-11 12:13:51,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:51,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:51,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731300175] [2021-03-11 12:13:51,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:51,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:51,277 INFO L87 Difference]: Start difference. First operand 3568 states and 11574 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:52,042 INFO L93 Difference]: Finished difference Result 3630 states and 11748 transitions. [2021-03-11 12:13:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 12:13:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:52,050 INFO L225 Difference]: With dead ends: 3630 [2021-03-11 12:13:52,050 INFO L226 Difference]: Without dead ends: 3630 [2021-03-11 12:13:52,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 525.4ms TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2021-03-11 12:13:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2021-03-11 12:13:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3511. [2021-03-11 12:13:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3507 states have (on average 3.245508982035928) internal successors, (11382), 3510 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 11382 transitions. [2021-03-11 12:13:52,125 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 11382 transitions. Word has length 25 [2021-03-11 12:13:52,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:52,125 INFO L480 AbstractCegarLoop]: Abstraction has 3511 states and 11382 transitions. [2021-03-11 12:13:52,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 11382 transitions. [2021-03-11 12:13:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:52,130 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:52,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:52,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 12:13:52,131 INFO L428 AbstractCegarLoop]: === Iteration 9 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:52,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1635728348, now seen corresponding path program 4 times [2021-03-11 12:13:52,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:52,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428921096] [2021-03-11 12:13:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:52,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:13:52,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:13:52,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:52,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:52,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:52,227 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:13:52,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:52,239 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.0 percent of original size [2021-03-11 12:13:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:52,254 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:13:52,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:52,273 INFO L142 QuantifierPusher]: treesize reduction 45, result has 39.2 percent of original size [2021-03-11 12:13:52,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:13:52,289 INFO L142 QuantifierPusher]: treesize reduction 46, result has 48.3 percent of original size [2021-03-11 12:13:52,289 INFO L147 QuantifierPusher]: treesize reduction 6, result has 86.0 percent of original size 37 [2021-03-11 12:13:52,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:13:52,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:13:52,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:52,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:52,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428921096] [2021-03-11 12:13:52,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:52,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:52,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200580640] [2021-03-11 12:13:52,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:52,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:52,331 INFO L87 Difference]: Start difference. First operand 3511 states and 11382 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:53,576 INFO L93 Difference]: Finished difference Result 4727 states and 15344 transitions. [2021-03-11 12:13:53,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 12:13:53,576 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:53,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:53,585 INFO L225 Difference]: With dead ends: 4727 [2021-03-11 12:13:53,585 INFO L226 Difference]: Without dead ends: 4727 [2021-03-11 12:13:53,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 675.2ms TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2021-03-11 12:13:53,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2021-03-11 12:13:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4125. [2021-03-11 12:13:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4121 states have (on average 3.260373695704926) internal successors, (13436), 4124 states have internal predecessors, (13436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 13436 transitions. [2021-03-11 12:13:53,649 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 13436 transitions. Word has length 25 [2021-03-11 12:13:53,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:53,650 INFO L480 AbstractCegarLoop]: Abstraction has 4125 states and 13436 transitions. [2021-03-11 12:13:53,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:53,650 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 13436 transitions. [2021-03-11 12:13:53,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:53,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:53,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:53,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 12:13:53,655 INFO L428 AbstractCegarLoop]: === Iteration 10 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1623835428, now seen corresponding path program 5 times [2021-03-11 12:13:53,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:53,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873182016] [2021-03-11 12:13:53,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:53,708 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:13:53,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:13:53,714 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:13:53,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:13:53,722 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:53,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:53,729 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:53,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:53,738 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:53,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:53,748 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:13:53,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:53,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:13:53,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:53,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:13:53,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:53,787 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:13:53,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:13:53,806 INFO L142 QuantifierPusher]: treesize reduction 38, result has 54.8 percent of original size [2021-03-11 12:13:53,807 INFO L147 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-03-11 12:13:53,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:53,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:13:53,844 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:13:53,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:53,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:53,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:53,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:53,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:53,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873182016] [2021-03-11 12:13:53,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:53,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:13:53,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441568906] [2021-03-11 12:13:53,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:13:53,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:53,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:13:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:13:53,863 INFO L87 Difference]: Start difference. First operand 4125 states and 13436 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:55,322 INFO L93 Difference]: Finished difference Result 5345 states and 17206 transitions. [2021-03-11 12:13:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-11 12:13:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:55,333 INFO L225 Difference]: With dead ends: 5345 [2021-03-11 12:13:55,333 INFO L226 Difference]: Without dead ends: 5345 [2021-03-11 12:13:55,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 889.3ms TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2021-03-11 12:13:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-03-11 12:13:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 3761. [2021-03-11 12:13:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3757 states have (on average 3.2690976843225976) internal successors, (12282), 3760 states have internal predecessors, (12282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 12282 transitions. [2021-03-11 12:13:55,404 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 12282 transitions. Word has length 25 [2021-03-11 12:13:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:55,404 INFO L480 AbstractCegarLoop]: Abstraction has 3761 states and 12282 transitions. [2021-03-11 12:13:55,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 12282 transitions. [2021-03-11 12:13:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:55,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:55,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:55,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 12:13:55,410 INFO L428 AbstractCegarLoop]: === Iteration 11 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:55,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1726434492, now seen corresponding path program 6 times [2021-03-11 12:13:55,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:55,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934345205] [2021-03-11 12:13:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:55,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:13:55,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:13:55,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:55,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:55,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:55,492 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:13:55,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:55,504 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:13:55,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:55,517 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.0 percent of original size [2021-03-11 12:13:55,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:13:55,532 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:13:55,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:55,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 39.2 percent of original size [2021-03-11 12:13:55,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:13:55,567 INFO L142 QuantifierPusher]: treesize reduction 46, result has 48.3 percent of original size [2021-03-11 12:13:55,568 INFO L147 QuantifierPusher]: treesize reduction 6, result has 86.0 percent of original size 37 [2021-03-11 12:13:55,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:13:55,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:13:55,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:55,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934345205] [2021-03-11 12:13:55,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:55,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:55,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355018523] [2021-03-11 12:13:55,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:55,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:55,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:55,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:55,612 INFO L87 Difference]: Start difference. First operand 3761 states and 12282 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:56,737 INFO L93 Difference]: Finished difference Result 4627 states and 15144 transitions. [2021-03-11 12:13:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 12:13:56,737 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:56,747 INFO L225 Difference]: With dead ends: 4627 [2021-03-11 12:13:56,747 INFO L226 Difference]: Without dead ends: 4627 [2021-03-11 12:13:56,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 674.1ms TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2021-03-11 12:13:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2021-03-11 12:13:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4375. [2021-03-11 12:13:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 4371 states have (on average 3.2820864790665754) internal successors, (14346), 4374 states have internal predecessors, (14346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 14346 transitions. [2021-03-11 12:13:56,810 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 14346 transitions. Word has length 25 [2021-03-11 12:13:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:56,810 INFO L480 AbstractCegarLoop]: Abstraction has 4375 states and 14346 transitions. [2021-03-11 12:13:56,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 14346 transitions. [2021-03-11 12:13:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:56,817 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:56,817 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:56,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 12:13:56,818 INFO L428 AbstractCegarLoop]: === Iteration 12 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:56,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1738327412, now seen corresponding path program 7 times [2021-03-11 12:13:56,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:56,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080100984] [2021-03-11 12:13:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:56,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:56,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:13:56,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:56,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:13:56,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:56,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:13:56,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:56,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:13:56,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:56,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:13:56,973 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-03-11 12:13:56,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:13:56,993 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-03-11 12:13:56,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:13:57,020 INFO L142 QuantifierPusher]: treesize reduction 358, result has 21.7 percent of original size [2021-03-11 12:13:57,021 INFO L147 QuantifierPusher]: treesize reduction 22, result has 77.8 percent of original size 77 [2021-03-11 12:13:57,050 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.9 percent of original size [2021-03-11 12:13:57,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:13:57,080 INFO L142 QuantifierPusher]: treesize reduction 61, result has 40.2 percent of original size [2021-03-11 12:13:57,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:13:57,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:57,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:13:57,115 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:13:57,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:57,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:57,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:57,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:57,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:57,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080100984] [2021-03-11 12:13:57,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:57,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:57,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550300885] [2021-03-11 12:13:57,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:57,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:57,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:57,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:57,133 INFO L87 Difference]: Start difference. First operand 4375 states and 14346 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:13:58,922 INFO L93 Difference]: Finished difference Result 5245 states and 17006 transitions. [2021-03-11 12:13:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:13:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:13:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:13:58,931 INFO L225 Difference]: With dead ends: 5245 [2021-03-11 12:13:58,931 INFO L226 Difference]: Without dead ends: 5245 [2021-03-11 12:13:58,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1111.5ms TimeCoverageRelationStatistics Valid=292, Invalid=638, Unknown=0, NotChecked=0, Total=930 [2021-03-11 12:13:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2021-03-11 12:13:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 3881. [2021-03-11 12:13:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3881 states, 3877 states have (on average 3.2968790301779727) internal successors, (12782), 3880 states have internal predecessors, (12782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3881 states to 3881 states and 12782 transitions. [2021-03-11 12:13:58,992 INFO L78 Accepts]: Start accepts. Automaton has 3881 states and 12782 transitions. Word has length 25 [2021-03-11 12:13:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:13:58,992 INFO L480 AbstractCegarLoop]: Abstraction has 3881 states and 12782 transitions. [2021-03-11 12:13:58,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:13:58,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3881 states and 12782 transitions. [2021-03-11 12:13:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:13:58,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:13:58,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:13:58,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 12:13:58,997 INFO L428 AbstractCegarLoop]: === Iteration 13 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:13:58,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:13:58,997 INFO L82 PathProgramCache]: Analyzing trace with hash -630597660, now seen corresponding path program 8 times [2021-03-11 12:13:58,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:13:58,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093383544] [2021-03-11 12:13:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:13:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:13:59,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:13:59,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:13:59,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:59,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:59,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:13:59,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-03-11 12:13:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:13:59,080 INFO L142 QuantifierPusher]: treesize reduction 20, result has 62.3 percent of original size [2021-03-11 12:13:59,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:13:59,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-03-11 12:13:59,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:13:59,108 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:13:59,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:13:59,121 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:13:59,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:13:59,162 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.2 percent of original size [2021-03-11 12:13:59,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:13:59,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:13:59,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:13:59,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:13:59,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:13:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:13:59,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093383544] [2021-03-11 12:13:59,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:13:59,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:13:59,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456704173] [2021-03-11 12:13:59,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:13:59,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:13:59,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:13:59,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:13:59,197 INFO L87 Difference]: Start difference. First operand 3881 states and 12782 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:00,111 INFO L93 Difference]: Finished difference Result 4015 states and 12959 transitions. [2021-03-11 12:14:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 12:14:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:14:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:00,118 INFO L225 Difference]: With dead ends: 4015 [2021-03-11 12:14:00,118 INFO L226 Difference]: Without dead ends: 4015 [2021-03-11 12:14:00,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 474.2ms TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:14:00,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-03-11 12:14:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3895. [2021-03-11 12:14:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3891 states have (on average 3.2328450269853506) internal successors, (12579), 3894 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 12579 transitions. [2021-03-11 12:14:00,174 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 12579 transitions. Word has length 25 [2021-03-11 12:14:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:00,174 INFO L480 AbstractCegarLoop]: Abstraction has 3895 states and 12579 transitions. [2021-03-11 12:14:00,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 12579 transitions. [2021-03-11 12:14:00,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:14:00,179 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:00,179 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:00,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 12:14:00,179 INFO L428 AbstractCegarLoop]: === Iteration 14 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:00,180 INFO L82 PathProgramCache]: Analyzing trace with hash -618704740, now seen corresponding path program 9 times [2021-03-11 12:14:00,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:00,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312196056] [2021-03-11 12:14:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:00,218 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:14:00,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:00,224 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:14:00,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:00,233 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:00,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:00,240 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:00,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:00,249 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:00,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:14:00,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:14:00,270 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:14:00,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:00,284 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:14:00,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:00,292 INFO L142 QuantifierPusher]: treesize reduction 52, result has 41.6 percent of original size [2021-03-11 12:14:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:00,309 INFO L142 QuantifierPusher]: treesize reduction 52, result has 41.6 percent of original size [2021-03-11 12:14:00,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:00,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:00,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:00,340 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.9 percent of original size [2021-03-11 12:14:00,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:00,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:00,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:00,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:00,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:00,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312196056] [2021-03-11 12:14:00,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:00,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:14:00,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637299798] [2021-03-11 12:14:00,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:14:00,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:00,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:14:00,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:14:00,360 INFO L87 Difference]: Start difference. First operand 3895 states and 12579 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:02,384 INFO L93 Difference]: Finished difference Result 4679 states and 14963 transitions. [2021-03-11 12:14:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:14:02,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:14:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:02,391 INFO L225 Difference]: With dead ends: 4679 [2021-03-11 12:14:02,392 INFO L226 Difference]: Without dead ends: 4679 [2021-03-11 12:14:02,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1123.8ms TimeCoverageRelationStatistics Valid=303, Invalid=689, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:14:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4679 states. [2021-03-11 12:14:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4679 to 3105. [2021-03-11 12:14:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 3101 states have (on average 3.217994195420832) internal successors, (9979), 3104 states have internal predecessors, (9979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 9979 transitions. [2021-03-11 12:14:02,466 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 9979 transitions. Word has length 25 [2021-03-11 12:14:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:02,467 INFO L480 AbstractCegarLoop]: Abstraction has 3105 states and 9979 transitions. [2021-03-11 12:14:02,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 9979 transitions. [2021-03-11 12:14:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:14:02,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:02,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:02,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 12:14:02,473 INFO L428 AbstractCegarLoop]: === Iteration 15 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1761069432, now seen corresponding path program 2 times [2021-03-11 12:14:02,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:02,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458228173] [2021-03-11 12:14:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:02,516 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:14:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:02,522 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:14:02,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:02,530 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:02,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:02,539 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:02,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:02,552 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:02,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:02,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:14:02,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:14:02,575 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:14:02,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:02,590 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:14:02,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:02,598 INFO L142 QuantifierPusher]: treesize reduction 52, result has 41.6 percent of original size [2021-03-11 12:14:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:02,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:02,623 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:14:02,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:02,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:02,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:02,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:02,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:02,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458228173] [2021-03-11 12:14:02,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:02,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 12:14:02,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125540257] [2021-03-11 12:14:02,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 12:14:02,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:02,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 12:14:02,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-11 12:14:02,641 INFO L87 Difference]: Start difference. First operand 3105 states and 9979 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:03,749 INFO L93 Difference]: Finished difference Result 4075 states and 12839 transitions. [2021-03-11 12:14:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:03,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:14:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:03,754 INFO L225 Difference]: With dead ends: 4075 [2021-03-11 12:14:03,755 INFO L226 Difference]: Without dead ends: 4075 [2021-03-11 12:14:03,755 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 629.8ms TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2021-03-11 12:14:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-03-11 12:14:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 3035. [2021-03-11 12:14:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3031 states have (on average 3.203233256351039) internal successors, (9709), 3034 states have internal predecessors, (9709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 9709 transitions. [2021-03-11 12:14:03,795 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 9709 transitions. Word has length 25 [2021-03-11 12:14:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:03,795 INFO L480 AbstractCegarLoop]: Abstraction has 3035 states and 9709 transitions. [2021-03-11 12:14:03,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 9709 transitions. [2021-03-11 12:14:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:14:03,798 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:03,798 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:03,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 12:14:03,798 INFO L428 AbstractCegarLoop]: === Iteration 16 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:03,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1386930950, now seen corresponding path program 3 times [2021-03-11 12:14:03,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:03,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443754731] [2021-03-11 12:14:03,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:03,828 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:14:03,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:03,834 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:14:03,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:03,843 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:03,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:03,851 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:03,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:03,860 INFO L142 QuantifierPusher]: treesize reduction 12, result has 71.4 percent of original size [2021-03-11 12:14:03,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:03,870 INFO L142 QuantifierPusher]: treesize reduction 12, result has 71.4 percent of original size [2021-03-11 12:14:03,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:03,882 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-03-11 12:14:03,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:03,897 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.1 percent of original size [2021-03-11 12:14:03,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:03,904 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:14:03,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:03,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:03,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:03,930 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:14:03,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:03,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:03,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:03,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:03,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:03,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443754731] [2021-03-11 12:14:03,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:03,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 12:14:03,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015274937] [2021-03-11 12:14:03,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 12:14:03,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:03,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 12:14:03,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-03-11 12:14:03,946 INFO L87 Difference]: Start difference. First operand 3035 states and 9709 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:05,102 INFO L93 Difference]: Finished difference Result 3805 states and 12029 transitions. [2021-03-11 12:14:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:05,102 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:14:05,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:05,108 INFO L225 Difference]: With dead ends: 3805 [2021-03-11 12:14:05,108 INFO L226 Difference]: Without dead ends: 3805 [2021-03-11 12:14:05,108 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 648.3ms TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-03-11 12:14:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 2895. [2021-03-11 12:14:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2891 states have (on average 3.2130750605326877) internal successors, (9289), 2894 states have internal predecessors, (9289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 9289 transitions. [2021-03-11 12:14:05,147 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 9289 transitions. Word has length 25 [2021-03-11 12:14:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:05,148 INFO L480 AbstractCegarLoop]: Abstraction has 2895 states and 9289 transitions. [2021-03-11 12:14:05,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 9289 transitions. [2021-03-11 12:14:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-03-11 12:14:05,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:05,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:05,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 12:14:05,151 INFO L428 AbstractCegarLoop]: === Iteration 17 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1447201586, now seen corresponding path program 4 times [2021-03-11 12:14:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:05,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23476124] [2021-03-11 12:14:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:05,176 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:14:05,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:05,181 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:14:05,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:05,189 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:05,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:05,197 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:14:05,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:05,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:14:05,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:14:05,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:14:05,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:05,226 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:14:05,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:05,232 INFO L142 QuantifierPusher]: treesize reduction 33, result has 58.2 percent of original size [2021-03-11 12:14:05,233 INFO L147 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size 41 [2021-03-11 12:14:05,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:05,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:05,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:05,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:05,280 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:14:05,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:05,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:05,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:05,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:05,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:14:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:05,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23476124] [2021-03-11 12:14:05,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:05,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 12:14:05,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620924645] [2021-03-11 12:14:05,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-11 12:14:05,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:05,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-11 12:14:05,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-11 12:14:05,298 INFO L87 Difference]: Start difference. First operand 2895 states and 9289 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:06,408 INFO L93 Difference]: Finished difference Result 3679 states and 11596 transitions. [2021-03-11 12:14:06,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-03-11 12:14:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:06,413 INFO L225 Difference]: With dead ends: 3679 [2021-03-11 12:14:06,413 INFO L226 Difference]: Without dead ends: 3679 [2021-03-11 12:14:06,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 651.6ms TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2021-03-11 12:14:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 2769. [2021-03-11 12:14:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2765 states have (on average 3.195660036166365) internal successors, (8836), 2768 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 8836 transitions. [2021-03-11 12:14:06,448 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 8836 transitions. Word has length 25 [2021-03-11 12:14:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:06,448 INFO L480 AbstractCegarLoop]: Abstraction has 2769 states and 8836 transitions. [2021-03-11 12:14:06,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 8836 transitions. [2021-03-11 12:14:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:06,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:06,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:06,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 12:14:06,451 INFO L428 AbstractCegarLoop]: === Iteration 18 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:06,451 INFO L82 PathProgramCache]: Analyzing trace with hash 865165784, now seen corresponding path program 1 times [2021-03-11 12:14:06,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:06,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38850232] [2021-03-11 12:14:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:06,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:14:06,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:06,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:06,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:06,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:06,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:06,567 INFO L142 QuantifierPusher]: treesize reduction 20, result has 77.5 percent of original size [2021-03-11 12:14:06,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:14:06,609 INFO L142 QuantifierPusher]: treesize reduction 32, result has 69.2 percent of original size [2021-03-11 12:14:06,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:14:06,655 INFO L142 QuantifierPusher]: treesize reduction 30, result has 72.2 percent of original size [2021-03-11 12:14:06,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:14:06,667 INFO L142 QuantifierPusher]: treesize reduction 69, result has 62.7 percent of original size [2021-03-11 12:14:06,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:14:06,729 INFO L142 QuantifierPusher]: treesize reduction 77, result has 60.1 percent of original size [2021-03-11 12:14:06,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:14:06,745 INFO L142 QuantifierPusher]: treesize reduction 33, result has 57.1 percent of original size [2021-03-11 12:14:06,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:06,772 INFO L142 QuantifierPusher]: treesize reduction 32, result has 85.0 percent of original size [2021-03-11 12:14:06,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-03-11 12:14:06,797 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:06,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:06,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:06,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:06,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:14:06,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:14:06,846 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:06,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:06,857 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:06,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:06,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38850232] [2021-03-11 12:14:06,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:06,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:06,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866341505] [2021-03-11 12:14:06,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:06,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:06,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:06,870 INFO L87 Difference]: Start difference. First operand 2769 states and 8836 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:08,462 INFO L93 Difference]: Finished difference Result 4859 states and 15629 transitions. [2021-03-11 12:14:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:08,469 INFO L225 Difference]: With dead ends: 4859 [2021-03-11 12:14:08,469 INFO L226 Difference]: Without dead ends: 4859 [2021-03-11 12:14:08,469 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 759.8ms TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2021-03-11 12:14:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4019. [2021-03-11 12:14:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4019 states, 4015 states have (on average 3.187795765877958) internal successors, (12799), 4018 states have internal predecessors, (12799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 12799 transitions. [2021-03-11 12:14:08,521 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 12799 transitions. Word has length 27 [2021-03-11 12:14:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:08,522 INFO L480 AbstractCegarLoop]: Abstraction has 4019 states and 12799 transitions. [2021-03-11 12:14:08,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:08,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 12799 transitions. [2021-03-11 12:14:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:08,525 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:08,525 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:08,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 12:14:08,526 INFO L428 AbstractCegarLoop]: === Iteration 19 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash 606868418, now seen corresponding path program 1 times [2021-03-11 12:14:08,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:08,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80887551] [2021-03-11 12:14:08,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:08,571 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:08,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:08,577 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-03-11 12:14:08,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:08,591 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-03-11 12:14:08,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:08,606 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:08,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:08,621 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-03-11 12:14:08,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:08,639 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.0 percent of original size [2021-03-11 12:14:08,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:14:08,669 INFO L142 QuantifierPusher]: treesize reduction 318, result has 21.7 percent of original size [2021-03-11 12:14:08,669 INFO L147 QuantifierPusher]: treesize reduction 11, result has 87.5 percent of original size 77 [2021-03-11 12:14:08,702 INFO L142 QuantifierPusher]: treesize reduction 67, result has 34.3 percent of original size [2021-03-11 12:14:08,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:08,709 INFO L142 QuantifierPusher]: treesize reduction 79, result has 54.3 percent of original size [2021-03-11 12:14:08,710 INFO L147 QuantifierPusher]: treesize reduction 9, result has 90.4 percent of original size 85 [2021-03-11 12:14:08,752 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-03-11 12:14:08,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:08,776 INFO L142 QuantifierPusher]: treesize reduction 28, result has 85.9 percent of original size [2021-03-11 12:14:08,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-03-11 12:14:08,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:08,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:08,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:08,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:08,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-03-11 12:14:08,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:08,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:08,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:08,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:08,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:08,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80887551] [2021-03-11 12:14:08,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:08,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:08,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117432515] [2021-03-11 12:14:08,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:08,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:08,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:08,865 INFO L87 Difference]: Start difference. First operand 4019 states and 12799 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:10,331 INFO L93 Difference]: Finished difference Result 5979 states and 19202 transitions. [2021-03-11 12:14:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:10,341 INFO L225 Difference]: With dead ends: 5979 [2021-03-11 12:14:10,341 INFO L226 Difference]: Without dead ends: 5979 [2021-03-11 12:14:10,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 609.1ms TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5979 states. [2021-03-11 12:14:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5979 to 4537. [2021-03-11 12:14:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4533 states have (on average 3.175159938230752) internal successors, (14393), 4536 states have internal predecessors, (14393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 14393 transitions. [2021-03-11 12:14:10,403 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 14393 transitions. Word has length 27 [2021-03-11 12:14:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:10,403 INFO L480 AbstractCegarLoop]: Abstraction has 4537 states and 14393 transitions. [2021-03-11 12:14:10,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 14393 transitions. [2021-03-11 12:14:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:10,408 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:10,408 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:10,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 12:14:10,408 INFO L428 AbstractCegarLoop]: === Iteration 20 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:10,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1812744606, now seen corresponding path program 2 times [2021-03-11 12:14:10,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:10,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235020287] [2021-03-11 12:14:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:10,452 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:10,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:10,457 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:10,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:10,465 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:10,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:10,473 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:10,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:10,481 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:10,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:10,491 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:10,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:10,502 INFO L142 QuantifierPusher]: treesize reduction 37, result has 61.1 percent of original size [2021-03-11 12:14:10,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:10,536 INFO L142 QuantifierPusher]: treesize reduction 49, result has 55.5 percent of original size [2021-03-11 12:14:10,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:14:10,581 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.9 percent of original size [2021-03-11 12:14:10,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-11 12:14:10,593 INFO L142 QuantifierPusher]: treesize reduction 83, result has 55.9 percent of original size [2021-03-11 12:14:10,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:14:10,645 INFO L142 QuantifierPusher]: treesize reduction 80, result has 59.2 percent of original size [2021-03-11 12:14:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:14:10,664 INFO L142 QuantifierPusher]: treesize reduction 51, result has 46.3 percent of original size [2021-03-11 12:14:10,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:10,694 INFO L142 QuantifierPusher]: treesize reduction 52, result has 77.6 percent of original size [2021-03-11 12:14:10,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-03-11 12:14:10,710 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:10,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:10,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:10,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:10,737 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:10,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:10,759 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:10,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:10,770 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:10,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:10,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235020287] [2021-03-11 12:14:10,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:10,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:10,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952250765] [2021-03-11 12:14:10,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:10,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:10,783 INFO L87 Difference]: Start difference. First operand 4537 states and 14393 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:12,585 INFO L93 Difference]: Finished difference Result 7171 states and 22818 transitions. [2021-03-11 12:14:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:12,595 INFO L225 Difference]: With dead ends: 7171 [2021-03-11 12:14:12,595 INFO L226 Difference]: Without dead ends: 7171 [2021-03-11 12:14:12,596 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 761.4ms TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7171 states. [2021-03-11 12:14:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7171 to 4721. [2021-03-11 12:14:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4717 states have (on average 3.1683273266906933) internal successors, (14945), 4720 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 14945 transitions. [2021-03-11 12:14:12,662 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 14945 transitions. Word has length 27 [2021-03-11 12:14:12,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:12,662 INFO L480 AbstractCegarLoop]: Abstraction has 4721 states and 14945 transitions. [2021-03-11 12:14:12,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 14945 transitions. [2021-03-11 12:14:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:12,668 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:12,668 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:12,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 12:14:12,668 INFO L428 AbstractCegarLoop]: === Iteration 21 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:12,668 INFO L82 PathProgramCache]: Analyzing trace with hash -589661958, now seen corresponding path program 3 times [2021-03-11 12:14:12,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:12,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696528842] [2021-03-11 12:14:12,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:12,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:12,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:12,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:14:12,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:14:12,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:12,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:14:12,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:12,787 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.5 percent of original size [2021-03-11 12:14:12,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 12:14:12,827 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.5 percent of original size [2021-03-11 12:14:12,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 12:14:12,867 INFO L142 QuantifierPusher]: treesize reduction 384, result has 24.3 percent of original size [2021-03-11 12:14:12,875 INFO L147 QuantifierPusher]: treesize reduction 22, result has 82.1 percent of original size 101 [2021-03-11 12:14:12,923 INFO L142 QuantifierPusher]: treesize reduction 52, result has 56.3 percent of original size [2021-03-11 12:14:12,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:14:12,936 INFO L142 QuantifierPusher]: treesize reduction 72, result has 63.8 percent of original size [2021-03-11 12:14:12,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:14:12,993 INFO L142 QuantifierPusher]: treesize reduction 86, result has 61.3 percent of original size [2021-03-11 12:14:12,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-03-11 12:14:13,054 INFO L142 QuantifierPusher]: treesize reduction 49, result has 51.0 percent of original size [2021-03-11 12:14:13,054 INFO L147 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size 48 [2021-03-11 12:14:13,087 INFO L142 QuantifierPusher]: treesize reduction 53, result has 77.6 percent of original size [2021-03-11 12:14:13,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-03-11 12:14:13,111 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-03-11 12:14:13,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 12:14:13,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:13,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:13,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:14:13,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:14:13,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:13,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:13,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:13,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696528842] [2021-03-11 12:14:13,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:13,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:14:13,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387729919] [2021-03-11 12:14:13,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:14:13,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:13,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:14:13,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:14:13,193 INFO L87 Difference]: Start difference. First operand 4721 states and 14945 transitions. Second operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:15,288 INFO L93 Difference]: Finished difference Result 6923 states and 21998 transitions. [2021-03-11 12:14:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:14:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:15,300 INFO L225 Difference]: With dead ends: 6923 [2021-03-11 12:14:15,300 INFO L226 Difference]: Without dead ends: 6923 [2021-03-11 12:14:15,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 995.8ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-03-11 12:14:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6923 states. [2021-03-11 12:14:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6923 to 5201. [2021-03-11 12:14:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5197 states have (on average 3.1527804502597654) internal successors, (16385), 5200 states have internal predecessors, (16385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 16385 transitions. [2021-03-11 12:14:15,380 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 16385 transitions. Word has length 27 [2021-03-11 12:14:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:15,381 INFO L480 AbstractCegarLoop]: Abstraction has 5201 states and 16385 transitions. [2021-03-11 12:14:15,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 16385 transitions. [2021-03-11 12:14:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:15,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:15,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:15,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 12:14:15,388 INFO L428 AbstractCegarLoop]: === Iteration 22 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2045467726, now seen corresponding path program 4 times [2021-03-11 12:14:15,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:15,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992888773] [2021-03-11 12:14:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:15,446 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:15,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:15,452 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:15,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:15,461 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:15,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:15,469 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:15,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:15,478 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:15,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:15,490 INFO L142 QuantifierPusher]: treesize reduction 23, result has 69.3 percent of original size [2021-03-11 12:14:15,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:15,524 INFO L142 QuantifierPusher]: treesize reduction 23, result has 69.3 percent of original size [2021-03-11 12:14:15,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:15,556 INFO L142 QuantifierPusher]: treesize reduction 29, result has 67.8 percent of original size [2021-03-11 12:14:15,556 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.2 percent of original size 55 [2021-03-11 12:14:15,595 INFO L142 QuantifierPusher]: treesize reduction 21, result has 77.4 percent of original size [2021-03-11 12:14:15,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:14:15,606 INFO L142 QuantifierPusher]: treesize reduction 77, result has 56.3 percent of original size [2021-03-11 12:14:15,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:14:15,650 INFO L142 QuantifierPusher]: treesize reduction 48, result has 36.0 percent of original size [2021-03-11 12:14:15,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:15,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 52.2 percent of original size [2021-03-11 12:14:15,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:14:15,704 INFO L142 QuantifierPusher]: treesize reduction 50, result has 72.4 percent of original size [2021-03-11 12:14:15,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:14:15,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 12:14:15,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 12:14:15,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:15,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:15,756 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:15,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:15,779 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:15,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:15,791 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:15,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992888773] [2021-03-11 12:14:15,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:15,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:14:15,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064879888] [2021-03-11 12:14:15,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:14:15,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:15,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:14:15,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:14:15,804 INFO L87 Difference]: Start difference. First operand 5201 states and 16385 transitions. Second operand has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:17,907 INFO L93 Difference]: Finished difference Result 7399 states and 23567 transitions. [2021-03-11 12:14:17,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:14:17,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:17,918 INFO L225 Difference]: With dead ends: 7399 [2021-03-11 12:14:17,918 INFO L226 Difference]: Without dead ends: 7399 [2021-03-11 12:14:17,918 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 907.0ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-03-11 12:14:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2021-03-11 12:14:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 5341. [2021-03-11 12:14:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5337 states have (on average 3.1525201424020985) internal successors, (16825), 5340 states have internal predecessors, (16825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 16825 transitions. [2021-03-11 12:14:17,990 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 16825 transitions. Word has length 27 [2021-03-11 12:14:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:17,990 INFO L480 AbstractCegarLoop]: Abstraction has 5341 states and 16825 transitions. [2021-03-11 12:14:17,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 16825 transitions. [2021-03-11 12:14:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:17,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:17,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:17,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 12:14:17,996 INFO L428 AbstractCegarLoop]: === Iteration 23 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:17,997 INFO L82 PathProgramCache]: Analyzing trace with hash -604434762, now seen corresponding path program 5 times [2021-03-11 12:14:17,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:17,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984171680] [2021-03-11 12:14:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:18,033 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:18,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:18,038 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:18,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:18,073 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:18,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:18,083 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:18,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:18,093 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:18,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:18,105 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.9 percent of original size [2021-03-11 12:14:18,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:18,139 INFO L142 QuantifierPusher]: treesize reduction 25, result has 69.9 percent of original size [2021-03-11 12:14:18,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:18,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 62.9 percent of original size [2021-03-11 12:14:18,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:14:18,213 INFO L142 QuantifierPusher]: treesize reduction 21, result has 78.8 percent of original size [2021-03-11 12:14:18,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:14:18,224 INFO L142 QuantifierPusher]: treesize reduction 67, result has 61.7 percent of original size [2021-03-11 12:14:18,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:14:18,268 INFO L142 QuantifierPusher]: treesize reduction 45, result has 42.3 percent of original size [2021-03-11 12:14:18,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:18,292 INFO L142 QuantifierPusher]: treesize reduction 44, result has 79.5 percent of original size [2021-03-11 12:14:18,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-03-11 12:14:18,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:18,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:18,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:18,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:18,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-03-11 12:14:18,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:18,359 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:18,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:18,371 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:18,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:18,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984171680] [2021-03-11 12:14:18,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:18,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:18,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320998416] [2021-03-11 12:14:18,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:18,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:18,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:18,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:18,384 INFO L87 Difference]: Start difference. First operand 5341 states and 16825 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:20,206 INFO L93 Difference]: Finished difference Result 7703 states and 24551 transitions. [2021-03-11 12:14:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:20,216 INFO L225 Difference]: With dead ends: 7703 [2021-03-11 12:14:20,216 INFO L226 Difference]: Without dead ends: 7703 [2021-03-11 12:14:20,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 789.5ms TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7703 states. [2021-03-11 12:14:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7703 to 4721. [2021-03-11 12:14:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4717 states have (on average 3.1683273266906933) internal successors, (14945), 4720 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 14945 transitions. [2021-03-11 12:14:20,274 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 14945 transitions. Word has length 27 [2021-03-11 12:14:20,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:20,274 INFO L480 AbstractCegarLoop]: Abstraction has 4721 states and 14945 transitions. [2021-03-11 12:14:20,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 14945 transitions. [2021-03-11 12:14:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:20,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:20,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:20,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 12:14:20,279 INFO L428 AbstractCegarLoop]: === Iteration 24 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:20,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2045172258, now seen corresponding path program 6 times [2021-03-11 12:14:20,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:20,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969748020] [2021-03-11 12:14:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:20,313 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:20,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:20,319 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:20,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:20,327 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:20,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:20,335 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:20,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:20,343 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:20,355 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-03-11 12:14:20,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:20,382 INFO L142 QuantifierPusher]: treesize reduction 32, result has 60.5 percent of original size [2021-03-11 12:14:20,383 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-03-11 12:14:20,419 INFO L142 QuantifierPusher]: treesize reduction 17, result has 79.8 percent of original size [2021-03-11 12:14:20,420 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size 61 [2021-03-11 12:14:20,429 INFO L142 QuantifierPusher]: treesize reduction 70, result has 56.5 percent of original size [2021-03-11 12:14:20,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:14:20,471 INFO L142 QuantifierPusher]: treesize reduction 70, result has 56.5 percent of original size [2021-03-11 12:14:20,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:14:20,513 INFO L142 QuantifierPusher]: treesize reduction 68, result has 59.8 percent of original size [2021-03-11 12:14:20,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:14:20,538 INFO L142 QuantifierPusher]: treesize reduction 42, result has 52.3 percent of original size [2021-03-11 12:14:20,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:20,566 INFO L142 QuantifierPusher]: treesize reduction 44, result has 80.7 percent of original size [2021-03-11 12:14:20,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-03-11 12:14:20,583 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:20,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:20,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:20,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:20,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:14:20,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:20,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:20,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:20,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:20,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:20,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969748020] [2021-03-11 12:14:20,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:20,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:20,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270233080] [2021-03-11 12:14:20,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:20,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:20,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:20,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:20,659 INFO L87 Difference]: Start difference. First operand 4721 states and 14945 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:22,473 INFO L93 Difference]: Finished difference Result 6586 states and 21122 transitions. [2021-03-11 12:14:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:22,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:22,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:22,483 INFO L225 Difference]: With dead ends: 6586 [2021-03-11 12:14:22,484 INFO L226 Difference]: Without dead ends: 6586 [2021-03-11 12:14:22,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 750.7ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-03-11 12:14:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 5671. [2021-03-11 12:14:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5667 states have (on average 3.1909299452973356) internal successors, (18083), 5670 states have internal predecessors, (18083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 18083 transitions. [2021-03-11 12:14:22,549 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 18083 transitions. Word has length 27 [2021-03-11 12:14:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:22,549 INFO L480 AbstractCegarLoop]: Abstraction has 5671 states and 18083 transitions. [2021-03-11 12:14:22,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 18083 transitions. [2021-03-11 12:14:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:22,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:22,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:22,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 12:14:22,555 INFO L428 AbstractCegarLoop]: === Iteration 25 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:22,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:22,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2045172259, now seen corresponding path program 1 times [2021-03-11 12:14:22,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:22,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419374611] [2021-03-11 12:14:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:22,594 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:22,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:22,600 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:22,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:22,609 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:22,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:22,617 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:22,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:22,627 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:22,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:22,639 INFO L142 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-03-11 12:14:22,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:22,666 INFO L142 QuantifierPusher]: treesize reduction 32, result has 60.5 percent of original size [2021-03-11 12:14:22,667 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-03-11 12:14:22,703 INFO L142 QuantifierPusher]: treesize reduction 17, result has 79.8 percent of original size [2021-03-11 12:14:22,704 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size 61 [2021-03-11 12:14:22,713 INFO L142 QuantifierPusher]: treesize reduction 68, result has 57.2 percent of original size [2021-03-11 12:14:22,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:14:22,754 INFO L142 QuantifierPusher]: treesize reduction 68, result has 57.2 percent of original size [2021-03-11 12:14:22,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:14:22,797 INFO L142 QuantifierPusher]: treesize reduction 66, result has 60.5 percent of original size [2021-03-11 12:14:22,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:14:22,812 INFO L142 QuantifierPusher]: treesize reduction 42, result has 52.3 percent of original size [2021-03-11 12:14:22,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:22,840 INFO L142 QuantifierPusher]: treesize reduction 44, result has 80.7 percent of original size [2021-03-11 12:14:22,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-03-11 12:14:22,857 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:22,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:22,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:22,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-03-11 12:14:22,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:22,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:22,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:22,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:22,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:22,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419374611] [2021-03-11 12:14:22,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:22,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:22,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284578225] [2021-03-11 12:14:22,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:22,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:22,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:22,934 INFO L87 Difference]: Start difference. First operand 5671 states and 18083 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:24,777 INFO L93 Difference]: Finished difference Result 6511 states and 20838 transitions. [2021-03-11 12:14:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:24,786 INFO L225 Difference]: With dead ends: 6511 [2021-03-11 12:14:24,786 INFO L226 Difference]: Without dead ends: 6511 [2021-03-11 12:14:24,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 769.5ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6511 states. [2021-03-11 12:14:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6511 to 4721. [2021-03-11 12:14:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4717 states have (on average 3.1683273266906933) internal successors, (14945), 4720 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 14945 transitions. [2021-03-11 12:14:24,842 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 14945 transitions. Word has length 27 [2021-03-11 12:14:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:24,842 INFO L480 AbstractCegarLoop]: Abstraction has 4721 states and 14945 transitions. [2021-03-11 12:14:24,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 14945 transitions. [2021-03-11 12:14:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:24,846 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:24,846 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:24,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 12:14:24,847 INFO L428 AbstractCegarLoop]: === Iteration 26 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1099535280, now seen corresponding path program 7 times [2021-03-11 12:14:24,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:24,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139510392] [2021-03-11 12:14:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:24,886 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:24,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:24,891 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.5 percent of original size [2021-03-11 12:14:24,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:24,905 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:24,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:24,919 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:24,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:24,933 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:14:24,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:24,951 INFO L142 QuantifierPusher]: treesize reduction 26, result has 58.7 percent of original size [2021-03-11 12:14:24,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:24,975 INFO L142 QuantifierPusher]: treesize reduction 26, result has 65.3 percent of original size [2021-03-11 12:14:24,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:14:25,003 INFO L142 QuantifierPusher]: treesize reduction 44, result has 45.7 percent of original size [2021-03-11 12:14:25,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:25,005 INFO L142 QuantifierPusher]: treesize reduction 100, result has 39.8 percent of original size [2021-03-11 12:14:25,005 INFO L147 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size 58 [2021-03-11 12:14:25,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-03-11 12:14:25,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:25,061 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-03-11 12:14:25,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:25,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 82.9 percent of original size [2021-03-11 12:14:25,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:25,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:25,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:25,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:25,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:25,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-03-11 12:14:25,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:25,157 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:25,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:25,168 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:25,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:25,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139510392] [2021-03-11 12:14:25,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:25,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:25,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335384008] [2021-03-11 12:14:25,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:25,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:25,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:25,181 INFO L87 Difference]: Start difference. First operand 4721 states and 14945 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:27,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:27,013 INFO L93 Difference]: Finished difference Result 6391 states and 20598 transitions. [2021-03-11 12:14:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:27,013 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:27,021 INFO L225 Difference]: With dead ends: 6391 [2021-03-11 12:14:27,022 INFO L226 Difference]: Without dead ends: 6391 [2021-03-11 12:14:27,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 720.7ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2021-03-11 12:14:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 5551. [2021-03-11 12:14:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5547 states have (on average 3.195060393005228) internal successors, (17723), 5550 states have internal predecessors, (17723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 17723 transitions. [2021-03-11 12:14:27,083 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 17723 transitions. Word has length 27 [2021-03-11 12:14:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:27,083 INFO L480 AbstractCegarLoop]: Abstraction has 5551 states and 17723 transitions. [2021-03-11 12:14:27,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 17723 transitions. [2021-03-11 12:14:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:27,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:27,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:27,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 12:14:27,087 INFO L428 AbstractCegarLoop]: === Iteration 27 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:27,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1099535281, now seen corresponding path program 2 times [2021-03-11 12:14:27,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:27,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205225137] [2021-03-11 12:14:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:27,120 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:27,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:27,125 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.5 percent of original size [2021-03-11 12:14:27,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:27,140 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:27,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:27,156 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:27,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:27,172 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:14:27,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:14:27,193 INFO L142 QuantifierPusher]: treesize reduction 37, result has 59.8 percent of original size [2021-03-11 12:14:27,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:14:27,231 INFO L142 QuantifierPusher]: treesize reduction 37, result has 64.4 percent of original size [2021-03-11 12:14:27,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:14:27,271 INFO L142 QuantifierPusher]: treesize reduction 55, result has 50.0 percent of original size [2021-03-11 12:14:27,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:14:27,273 INFO L142 QuantifierPusher]: treesize reduction 110, result has 43.0 percent of original size [2021-03-11 12:14:27,274 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.6 percent of original size 76 [2021-03-11 12:14:27,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 42.3 percent of original size [2021-03-11 12:14:27,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:27,344 INFO L142 QuantifierPusher]: treesize reduction 45, result has 42.3 percent of original size [2021-03-11 12:14:27,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:27,370 INFO L142 QuantifierPusher]: treesize reduction 44, result has 79.5 percent of original size [2021-03-11 12:14:27,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-03-11 12:14:27,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:27,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:27,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:27,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:27,417 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:27,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:27,441 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:27,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:27,454 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:27,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:27,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205225137] [2021-03-11 12:14:27,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:27,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:27,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571515551] [2021-03-11 12:14:27,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:27,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:27,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:27,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:27,467 INFO L87 Difference]: Start difference. First operand 5551 states and 17723 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:29,317 INFO L93 Difference]: Finished difference Result 6391 states and 20478 transitions. [2021-03-11 12:14:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:29,326 INFO L225 Difference]: With dead ends: 6391 [2021-03-11 12:14:29,326 INFO L226 Difference]: Without dead ends: 6391 [2021-03-11 12:14:29,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 818.4ms TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6391 states. [2021-03-11 12:14:29,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6391 to 4721. [2021-03-11 12:14:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 4717 states have (on average 3.1683273266906933) internal successors, (14945), 4720 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 14945 transitions. [2021-03-11 12:14:29,385 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 14945 transitions. Word has length 27 [2021-03-11 12:14:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:29,385 INFO L480 AbstractCegarLoop]: Abstraction has 4721 states and 14945 transitions. [2021-03-11 12:14:29,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 14945 transitions. [2021-03-11 12:14:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:29,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:29,389 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:29,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 12:14:29,389 INFO L428 AbstractCegarLoop]: === Iteration 28 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:29,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1809685868, now seen corresponding path program 8 times [2021-03-11 12:14:29,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:29,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295055852] [2021-03-11 12:14:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:29,421 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:29,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:29,427 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:29,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:29,435 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:29,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:29,443 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:29,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:29,451 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:29,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:29,463 INFO L142 QuantifierPusher]: treesize reduction 33, result has 63.7 percent of original size [2021-03-11 12:14:29,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:29,501 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.2 percent of original size [2021-03-11 12:14:29,501 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size 61 [2021-03-11 12:14:29,543 INFO L142 QuantifierPusher]: treesize reduction 31, result has 71.6 percent of original size [2021-03-11 12:14:29,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:14:29,552 INFO L142 QuantifierPusher]: treesize reduction 80, result has 56.8 percent of original size [2021-03-11 12:14:29,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:14:29,597 INFO L142 QuantifierPusher]: treesize reduction 50, result has 39.8 percent of original size [2021-03-11 12:14:29,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:29,620 INFO L142 QuantifierPusher]: treesize reduction 49, result has 77.7 percent of original size [2021-03-11 12:14:29,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-03-11 12:14:29,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:29,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:29,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:29,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:29,687 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:29,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:29,711 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:29,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:29,724 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:29,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:29,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295055852] [2021-03-11 12:14:29,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:29,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:29,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412610796] [2021-03-11 12:14:29,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:29,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:29,738 INFO L87 Difference]: Start difference. First operand 4721 states and 14945 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:31,686 INFO L93 Difference]: Finished difference Result 8404 states and 27182 transitions. [2021-03-11 12:14:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:14:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:31,698 INFO L225 Difference]: With dead ends: 8404 [2021-03-11 12:14:31,699 INFO L226 Difference]: Without dead ends: 8404 [2021-03-11 12:14:31,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 777.5ms TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2021-03-11 12:14:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8404 states. [2021-03-11 12:14:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8404 to 4766. [2021-03-11 12:14:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4766 states, 4762 states have (on average 3.1688366232675347) internal successors, (15090), 4765 states have internal predecessors, (15090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 15090 transitions. [2021-03-11 12:14:31,765 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 15090 transitions. Word has length 27 [2021-03-11 12:14:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:31,765 INFO L480 AbstractCegarLoop]: Abstraction has 4766 states and 15090 transitions. [2021-03-11 12:14:31,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 15090 transitions. [2021-03-11 12:14:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:31,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:31,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:31,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 12:14:31,769 INFO L428 AbstractCegarLoop]: === Iteration 29 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash -880463354, now seen corresponding path program 9 times [2021-03-11 12:14:31,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:31,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32593564] [2021-03-11 12:14:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:31,804 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:31,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:31,810 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:31,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:31,818 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:31,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:31,826 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:31,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:31,834 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:31,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:31,844 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:31,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:31,879 INFO L142 QuantifierPusher]: treesize reduction 37, result has 61.1 percent of original size [2021-03-11 12:14:31,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:31,922 INFO L142 QuantifierPusher]: treesize reduction 49, result has 55.5 percent of original size [2021-03-11 12:14:31,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:14:31,961 INFO L142 QuantifierPusher]: treesize reduction 34, result has 69.9 percent of original size [2021-03-11 12:14:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-11 12:14:31,973 INFO L142 QuantifierPusher]: treesize reduction 83, result has 55.9 percent of original size [2021-03-11 12:14:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:14:32,025 INFO L142 QuantifierPusher]: treesize reduction 80, result has 59.2 percent of original size [2021-03-11 12:14:32,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:14:32,042 INFO L142 QuantifierPusher]: treesize reduction 51, result has 46.3 percent of original size [2021-03-11 12:14:32,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:32,070 INFO L142 QuantifierPusher]: treesize reduction 52, result has 77.6 percent of original size [2021-03-11 12:14:32,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-03-11 12:14:32,087 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:32,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:32,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:32,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:32,114 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:32,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:32,137 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:32,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:32,148 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:32,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32593564] [2021-03-11 12:14:32,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:32,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 12:14:32,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483345158] [2021-03-11 12:14:32,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:14:32,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:32,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:14:32,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:14:32,161 INFO L87 Difference]: Start difference. First operand 4766 states and 15090 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:33,974 INFO L93 Difference]: Finished difference Result 6596 states and 21083 transitions. [2021-03-11 12:14:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:33,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:33,983 INFO L225 Difference]: With dead ends: 6596 [2021-03-11 12:14:33,983 INFO L226 Difference]: Without dead ends: 6596 [2021-03-11 12:14:33,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 761.9ms TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6596 states. [2021-03-11 12:14:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6596 to 3966. [2021-03-11 12:14:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 3962 states have (on average 3.197879858657244) internal successors, (12670), 3965 states have internal predecessors, (12670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 12670 transitions. [2021-03-11 12:14:34,048 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 12670 transitions. Word has length 27 [2021-03-11 12:14:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:34,048 INFO L480 AbstractCegarLoop]: Abstraction has 3966 states and 12670 transitions. [2021-03-11 12:14:34,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 12670 transitions. [2021-03-11 12:14:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:34,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:34,051 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:34,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 12:14:34,051 INFO L428 AbstractCegarLoop]: === Iteration 30 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:34,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:34,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1131913524, now seen corresponding path program 2 times [2021-03-11 12:14:34,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:34,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124508578] [2021-03-11 12:14:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:34,090 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:34,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:34,096 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-03-11 12:14:34,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:14:34,111 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:34,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:34,131 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-03-11 12:14:34,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:34,151 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-03-11 12:14:34,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:34,174 INFO L142 QuantifierPusher]: treesize reduction 43, result has 49.4 percent of original size [2021-03-11 12:14:34,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:14:34,203 INFO L142 QuantifierPusher]: treesize reduction 179, result has 57.2 percent of original size [2021-03-11 12:14:34,204 INFO L147 QuantifierPusher]: treesize reduction 48, result has 79.9 percent of original size 191 [2021-03-11 12:14:34,245 INFO L142 QuantifierPusher]: treesize reduction 43, result has 56.6 percent of original size [2021-03-11 12:14:34,245 INFO L147 QuantifierPusher]: treesize reduction 21, result has 62.5 percent of original size 35 [2021-03-11 12:14:34,254 INFO L142 QuantifierPusher]: treesize reduction 82, result has 61.9 percent of original size [2021-03-11 12:14:34,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:14:34,313 INFO L142 QuantifierPusher]: treesize reduction 35, result has 67.6 percent of original size [2021-03-11 12:14:34,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:14:34,343 INFO L142 QuantifierPusher]: treesize reduction 41, result has 82.8 percent of original size [2021-03-11 12:14:34,344 INFO L147 QuantifierPusher]: treesize reduction 4, result has 98.0 percent of original size 193 [2021-03-11 12:14:34,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:34,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:34,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:34,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:34,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.9 percent of original size [2021-03-11 12:14:34,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:34,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:34,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:34,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:34,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:34,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124508578] [2021-03-11 12:14:34,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:34,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:34,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502244569] [2021-03-11 12:14:34,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:34,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:34,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:34,431 INFO L87 Difference]: Start difference. First operand 3966 states and 12670 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:35,937 INFO L93 Difference]: Finished difference Result 5810 states and 18725 transitions. [2021-03-11 12:14:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:35,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:35,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:35,945 INFO L225 Difference]: With dead ends: 5810 [2021-03-11 12:14:35,945 INFO L226 Difference]: Without dead ends: 5810 [2021-03-11 12:14:35,946 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 681.6ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-03-11 12:14:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 3840. [2021-03-11 12:14:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3840 states, 3836 states have (on average 3.204379562043796) internal successors, (12292), 3839 states have internal predecessors, (12292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3840 states to 3840 states and 12292 transitions. [2021-03-11 12:14:36,005 INFO L78 Accepts]: Start accepts. Automaton has 3840 states and 12292 transitions. Word has length 27 [2021-03-11 12:14:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:36,006 INFO L480 AbstractCegarLoop]: Abstraction has 3840 states and 12292 transitions. [2021-03-11 12:14:36,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3840 states and 12292 transitions. [2021-03-11 12:14:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:36,008 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:36,008 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:36,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 12:14:36,008 INFO L428 AbstractCegarLoop]: === Iteration 31 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash -98258138, now seen corresponding path program 3 times [2021-03-11 12:14:36,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:36,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139190423] [2021-03-11 12:14:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:36,035 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:36,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:36,041 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:36,049 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:36,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:36,057 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:36,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:36,067 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-03-11 12:14:36,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:36,092 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-03-11 12:14:36,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:36,119 INFO L142 QuantifierPusher]: treesize reduction 34, result has 55.8 percent of original size [2021-03-11 12:14:36,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:36,150 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-03-11 12:14:36,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:14:36,159 INFO L142 QuantifierPusher]: treesize reduction 59, result has 62.2 percent of original size [2021-03-11 12:14:36,160 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.7 percent of original size 87 [2021-03-11 12:14:36,204 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.0 percent of original size [2021-03-11 12:14:36,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:36,229 INFO L142 QuantifierPusher]: treesize reduction 31, result has 85.0 percent of original size [2021-03-11 12:14:36,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:36,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:36,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:36,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:36,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:36,271 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:36,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:36,294 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:36,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:36,304 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:36,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:36,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139190423] [2021-03-11 12:14:36,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:36,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:36,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718926897] [2021-03-11 12:14:36,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:36,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:36,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:36,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:36,317 INFO L87 Difference]: Start difference. First operand 3840 states and 12292 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:37,770 INFO L93 Difference]: Finished difference Result 5630 states and 18305 transitions. [2021-03-11 12:14:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:37,771 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:37,778 INFO L225 Difference]: With dead ends: 5630 [2021-03-11 12:14:37,778 INFO L226 Difference]: Without dead ends: 5630 [2021-03-11 12:14:37,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 620.2ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-03-11 12:14:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 4730. [2021-03-11 12:14:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4726 states have (on average 3.22683030046551) internal successors, (15250), 4729 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 15250 transitions. [2021-03-11 12:14:37,857 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 15250 transitions. Word has length 27 [2021-03-11 12:14:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:37,857 INFO L480 AbstractCegarLoop]: Abstraction has 4730 states and 15250 transitions. [2021-03-11 12:14:37,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 15250 transitions. [2021-03-11 12:14:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:37,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:37,861 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:37,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 12:14:37,861 INFO L428 AbstractCegarLoop]: === Iteration 32 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -98258137, now seen corresponding path program 1 times [2021-03-11 12:14:37,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:37,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263030314] [2021-03-11 12:14:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:37,889 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:37,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:37,895 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:37,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:37,903 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:37,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:37,911 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:37,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:37,921 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-03-11 12:14:37,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:37,943 INFO L142 QuantifierPusher]: treesize reduction 22, result has 64.5 percent of original size [2021-03-11 12:14:37,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:37,967 INFO L142 QuantifierPusher]: treesize reduction 34, result has 55.8 percent of original size [2021-03-11 12:14:37,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:14:37,995 INFO L142 QuantifierPusher]: treesize reduction 20, result has 75.0 percent of original size [2021-03-11 12:14:37,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:14:38,004 INFO L142 QuantifierPusher]: treesize reduction 59, result has 62.2 percent of original size [2021-03-11 12:14:38,004 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.7 percent of original size 87 [2021-03-11 12:14:38,048 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.0 percent of original size [2021-03-11 12:14:38,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:38,077 INFO L142 QuantifierPusher]: treesize reduction 31, result has 85.0 percent of original size [2021-03-11 12:14:38,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:38,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:38,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:38,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:38,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:38,121 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:38,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:38,146 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:38,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:38,158 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:38,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:38,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263030314] [2021-03-11 12:14:38,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:38,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:38,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153998582] [2021-03-11 12:14:38,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:38,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:38,171 INFO L87 Difference]: Start difference. First operand 4730 states and 15250 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:39,777 INFO L93 Difference]: Finished difference Result 5630 states and 18185 transitions. [2021-03-11 12:14:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:39,785 INFO L225 Difference]: With dead ends: 5630 [2021-03-11 12:14:39,785 INFO L226 Difference]: Without dead ends: 5630 [2021-03-11 12:14:39,785 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 615.4ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-03-11 12:14:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 3660. [2021-03-11 12:14:39,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3656 states have (on average 3.2144420131291027) internal successors, (11752), 3659 states have internal predecessors, (11752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11752 transitions. [2021-03-11 12:14:39,856 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11752 transitions. Word has length 27 [2021-03-11 12:14:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:39,856 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11752 transitions. [2021-03-11 12:14:39,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11752 transitions. [2021-03-11 12:14:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:39,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:39,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:39,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 12:14:39,859 INFO L428 AbstractCegarLoop]: === Iteration 33 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash 493843294, now seen corresponding path program 4 times [2021-03-11 12:14:39,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:39,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235752347] [2021-03-11 12:14:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:39,885 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:39,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:39,890 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:39,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:39,899 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:39,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:39,907 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:39,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:39,917 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.5 percent of original size [2021-03-11 12:14:39,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:39,939 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.0 percent of original size [2021-03-11 12:14:39,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:39,971 INFO L142 QuantifierPusher]: treesize reduction 31, result has 56.3 percent of original size [2021-03-11 12:14:39,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:39,972 INFO L142 QuantifierPusher]: treesize reduction 45, result has 70.6 percent of original size [2021-03-11 12:14:39,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:14:40,011 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-03-11 12:14:40,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:40,033 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-03-11 12:14:40,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:40,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 82.9 percent of original size [2021-03-11 12:14:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:40,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:40,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:40,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:40,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:40,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:14:40,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:40,123 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:40,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:40,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235752347] [2021-03-11 12:14:40,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:40,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:40,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771374068] [2021-03-11 12:14:40,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:40,150 INFO L87 Difference]: Start difference. First operand 3660 states and 11752 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:41,674 INFO L93 Difference]: Finished difference Result 5405 states and 17569 transitions. [2021-03-11 12:14:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:41,682 INFO L225 Difference]: With dead ends: 5405 [2021-03-11 12:14:41,682 INFO L226 Difference]: Without dead ends: 5405 [2021-03-11 12:14:41,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 581.3ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2021-03-11 12:14:41,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 4490. [2021-03-11 12:14:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4486 states have (on average 3.238965670976371) internal successors, (14530), 4489 states have internal predecessors, (14530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 14530 transitions. [2021-03-11 12:14:41,736 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 14530 transitions. Word has length 27 [2021-03-11 12:14:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:41,736 INFO L480 AbstractCegarLoop]: Abstraction has 4490 states and 14530 transitions. [2021-03-11 12:14:41,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 14530 transitions. [2021-03-11 12:14:41,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:41,739 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:41,739 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:41,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 12:14:41,740 INFO L428 AbstractCegarLoop]: === Iteration 34 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:41,740 INFO L82 PathProgramCache]: Analyzing trace with hash 493843295, now seen corresponding path program 2 times [2021-03-11 12:14:41,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:41,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996090469] [2021-03-11 12:14:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:41,810 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:41,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:41,816 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:41,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:41,824 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:41,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:41,832 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:41,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:41,842 INFO L142 QuantifierPusher]: treesize reduction 14, result has 74.1 percent of original size [2021-03-11 12:14:41,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:41,870 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-03-11 12:14:41,871 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-03-11 12:14:41,899 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.7 percent of original size [2021-03-11 12:14:41,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:14:41,907 INFO L142 QuantifierPusher]: treesize reduction 57, result has 62.3 percent of original size [2021-03-11 12:14:41,907 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.6 percent of original size 87 [2021-03-11 12:14:41,945 INFO L142 QuantifierPusher]: treesize reduction 26, result has 57.4 percent of original size [2021-03-11 12:14:41,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:41,967 INFO L142 QuantifierPusher]: treesize reduction 26, result has 57.4 percent of original size [2021-03-11 12:14:41,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:41,990 INFO L142 QuantifierPusher]: treesize reduction 26, result has 87.1 percent of original size [2021-03-11 12:14:41,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:42,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:42,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:42,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:42,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:42,035 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:42,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:42,057 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:42,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:42,068 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:42,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:42,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996090469] [2021-03-11 12:14:42,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:42,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:42,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518621914] [2021-03-11 12:14:42,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:42,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:42,081 INFO L87 Difference]: Start difference. First operand 4490 states and 14530 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:43,623 INFO L93 Difference]: Finished difference Result 5330 states and 17285 transitions. [2021-03-11 12:14:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:43,630 INFO L225 Difference]: With dead ends: 5330 [2021-03-11 12:14:43,630 INFO L226 Difference]: Without dead ends: 5330 [2021-03-11 12:14:43,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 589.2ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:43,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5330 states. [2021-03-11 12:14:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5330 to 3660. [2021-03-11 12:14:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3656 states have (on average 3.2144420131291027) internal successors, (11752), 3659 states have internal predecessors, (11752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 11752 transitions. [2021-03-11 12:14:43,673 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 11752 transitions. Word has length 27 [2021-03-11 12:14:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:43,673 INFO L480 AbstractCegarLoop]: Abstraction has 3660 states and 11752 transitions. [2021-03-11 12:14:43,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 11752 transitions. [2021-03-11 12:14:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:43,676 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:43,676 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:43,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 12:14:43,676 INFO L428 AbstractCegarLoop]: === Iteration 35 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash 967990150, now seen corresponding path program 5 times [2021-03-11 12:14:43,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:43,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108252492] [2021-03-11 12:14:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:43,714 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:43,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:43,720 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:43,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:43,728 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:43,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:43,737 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:43,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:43,747 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.5 percent of original size [2021-03-11 12:14:43,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:43,769 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.0 percent of original size [2021-03-11 12:14:43,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:43,798 INFO L142 QuantifierPusher]: treesize reduction 28, result has 64.6 percent of original size [2021-03-11 12:14:43,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:14:43,827 INFO L142 QuantifierPusher]: treesize reduction 57, result has 62.3 percent of original size [2021-03-11 12:14:43,828 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.6 percent of original size 87 [2021-03-11 12:14:43,883 INFO L142 QuantifierPusher]: treesize reduction 34, result has 50.7 percent of original size [2021-03-11 12:14:43,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:43,906 INFO L142 QuantifierPusher]: treesize reduction 34, result has 83.7 percent of original size [2021-03-11 12:14:43,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:43,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:43,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:43,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:43,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:43,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:43,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:43,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:14:43,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:14:43,993 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:43,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:44,004 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:44,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:44,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108252492] [2021-03-11 12:14:44,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:44,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:44,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329634628] [2021-03-11 12:14:44,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:44,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:44,016 INFO L87 Difference]: Start difference. First operand 3660 states and 11752 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:45,839 INFO L93 Difference]: Finished difference Result 7343 states and 24109 transitions. [2021-03-11 12:14:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:45,850 INFO L225 Difference]: With dead ends: 7343 [2021-03-11 12:14:45,850 INFO L226 Difference]: Without dead ends: 7343 [2021-03-11 12:14:45,851 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 642.7ms TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2021-03-11 12:14:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2021-03-11 12:14:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 4395. [2021-03-11 12:14:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4391 states have (on average 3.2418583466180824) internal successors, (14235), 4394 states have internal predecessors, (14235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14235 transitions. [2021-03-11 12:14:45,909 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14235 transitions. Word has length 27 [2021-03-11 12:14:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:45,926 INFO L480 AbstractCegarLoop]: Abstraction has 4395 states and 14235 transitions. [2021-03-11 12:14:45,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14235 transitions. [2021-03-11 12:14:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:45,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:45,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:45,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 12:14:45,930 INFO L428 AbstractCegarLoop]: === Iteration 36 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash 967990151, now seen corresponding path program 3 times [2021-03-11 12:14:45,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:45,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157315277] [2021-03-11 12:14:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:45,960 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:45,966 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:14:45,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:14:45,982 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:14:45,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:14:46,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-03-11 12:14:46,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:14:46,022 INFO L142 QuantifierPusher]: treesize reduction 30, result has 60.5 percent of original size [2021-03-11 12:14:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:46,052 INFO L142 QuantifierPusher]: treesize reduction 337, result has 20.7 percent of original size [2021-03-11 12:14:46,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-03-11 12:14:46,082 INFO L142 QuantifierPusher]: treesize reduction 62, result has 42.6 percent of original size [2021-03-11 12:14:46,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:14:46,083 INFO L142 QuantifierPusher]: treesize reduction 103, result has 39.4 percent of original size [2021-03-11 12:14:46,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:14:46,114 INFO L142 QuantifierPusher]: treesize reduction 33, result has 50.0 percent of original size [2021-03-11 12:14:46,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:14:46,136 INFO L142 QuantifierPusher]: treesize reduction 33, result has 83.8 percent of original size [2021-03-11 12:14:46,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-03-11 12:14:46,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:46,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:46,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:46,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:46,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:46,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:14:46,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:46,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:46,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:46,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:46,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:46,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157315277] [2021-03-11 12:14:46,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:46,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:46,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104418724] [2021-03-11 12:14:46,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:46,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:46,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:46,236 INFO L87 Difference]: Start difference. First operand 4395 states and 14235 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:47,894 INFO L93 Difference]: Finished difference Result 7343 states and 23989 transitions. [2021-03-11 12:14:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:47,906 INFO L225 Difference]: With dead ends: 7343 [2021-03-11 12:14:47,906 INFO L226 Difference]: Without dead ends: 7343 [2021-03-11 12:14:47,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 642.1ms TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2021-03-11 12:14:47,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2021-03-11 12:14:47,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 3666. [2021-03-11 12:14:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3662 states have (on average 3.214363735663572) internal successors, (11771), 3665 states have internal predecessors, (11771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 11771 transitions. [2021-03-11 12:14:47,981 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 11771 transitions. Word has length 27 [2021-03-11 12:14:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:47,982 INFO L480 AbstractCegarLoop]: Abstraction has 3666 states and 11771 transitions. [2021-03-11 12:14:47,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 11771 transitions. [2021-03-11 12:14:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:47,984 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:47,984 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:47,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 12:14:47,984 INFO L428 AbstractCegarLoop]: === Iteration 37 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:47,985 INFO L82 PathProgramCache]: Analyzing trace with hash -113145190, now seen corresponding path program 6 times [2021-03-11 12:14:47,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:47,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389117928] [2021-03-11 12:14:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:48,014 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:48,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:48,020 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:48,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:48,028 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:48,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:48,037 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:48,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:48,047 INFO L142 QuantifierPusher]: treesize reduction 13, result has 75.5 percent of original size [2021-03-11 12:14:48,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:48,069 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.0 percent of original size [2021-03-11 12:14:48,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:14:48,102 INFO L142 QuantifierPusher]: treesize reduction 31, result has 56.3 percent of original size [2021-03-11 12:14:48,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:48,103 INFO L142 QuantifierPusher]: treesize reduction 45, result has 70.6 percent of original size [2021-03-11 12:14:48,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:14:48,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 70.6 percent of original size [2021-03-11 12:14:48,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:14:48,195 INFO L142 QuantifierPusher]: treesize reduction 36, result has 49.3 percent of original size [2021-03-11 12:14:48,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:48,221 INFO L142 QuantifierPusher]: treesize reduction 36, result has 82.9 percent of original size [2021-03-11 12:14:48,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:48,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:48,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:48,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:48,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:48,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:14:48,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:14:48,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:48,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:48,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:14:48,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:14:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:48,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389117928] [2021-03-11 12:14:48,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:48,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:48,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877275425] [2021-03-11 12:14:48,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:48,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:48,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:48,317 INFO L87 Difference]: Start difference. First operand 3666 states and 11771 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:49,923 INFO L93 Difference]: Finished difference Result 5271 states and 17148 transitions. [2021-03-11 12:14:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:49,923 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:49,932 INFO L225 Difference]: With dead ends: 5271 [2021-03-11 12:14:49,932 INFO L226 Difference]: Without dead ends: 5271 [2021-03-11 12:14:49,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 637.9ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5271 states. [2021-03-11 12:14:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5271 to 4356. [2021-03-11 12:14:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4352 states have (on average 3.2419577205882355) internal successors, (14109), 4355 states have internal predecessors, (14109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 14109 transitions. [2021-03-11 12:14:50,017 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 14109 transitions. Word has length 27 [2021-03-11 12:14:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:50,017 INFO L480 AbstractCegarLoop]: Abstraction has 4356 states and 14109 transitions. [2021-03-11 12:14:50,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 14109 transitions. [2021-03-11 12:14:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-03-11 12:14:50,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:50,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:50,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 12:14:50,021 INFO L428 AbstractCegarLoop]: === Iteration 38 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash -113145189, now seen corresponding path program 4 times [2021-03-11 12:14:50,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:50,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033934678] [2021-03-11 12:14:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:50,058 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:14:50,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:14:50,064 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:14:50,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:50,074 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:14:50,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:14:50,083 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 12:14:50,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:14:50,095 INFO L142 QuantifierPusher]: treesize reduction 14, result has 74.1 percent of original size [2021-03-11 12:14:50,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:14:50,121 INFO L142 QuantifierPusher]: treesize reduction 19, result has 72.1 percent of original size [2021-03-11 12:14:50,122 INFO L147 QuantifierPusher]: treesize reduction 6, result has 87.8 percent of original size 43 [2021-03-11 12:14:50,156 INFO L142 QuantifierPusher]: treesize reduction 10, result has 85.7 percent of original size [2021-03-11 12:14:50,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:14:50,165 INFO L142 QuantifierPusher]: treesize reduction 57, result has 62.3 percent of original size [2021-03-11 12:14:50,166 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.6 percent of original size 87 [2021-03-11 12:14:50,209 INFO L142 QuantifierPusher]: treesize reduction 57, result has 62.3 percent of original size [2021-03-11 12:14:50,209 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.6 percent of original size 87 [2021-03-11 12:14:50,252 INFO L142 QuantifierPusher]: treesize reduction 26, result has 57.4 percent of original size [2021-03-11 12:14:50,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:14:50,278 INFO L142 QuantifierPusher]: treesize reduction 26, result has 87.1 percent of original size [2021-03-11 12:14:50,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:14:50,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:50,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:50,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:50,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:50,324 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:14:50,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:14:50,348 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:50,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:50,360 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:14:50,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:14:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:50,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033934678] [2021-03-11 12:14:50,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:50,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-03-11 12:14:50,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969657146] [2021-03-11 12:14:50,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 12:14:50,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 12:14:50,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-03-11 12:14:50,374 INFO L87 Difference]: Start difference. First operand 4356 states and 14109 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:51,986 INFO L93 Difference]: Finished difference Result 5196 states and 16864 transitions. [2021-03-11 12:14:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:14:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-03-11 12:14:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:51,995 INFO L225 Difference]: With dead ends: 5196 [2021-03-11 12:14:51,995 INFO L226 Difference]: Without dead ends: 5196 [2021-03-11 12:14:51,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 659.2ms TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-03-11 12:14:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2021-03-11 12:14:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 3466. [2021-03-11 12:14:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3462 states have (on average 3.2209705372616986) internal successors, (11151), 3465 states have internal predecessors, (11151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 11151 transitions. [2021-03-11 12:14:52,039 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 11151 transitions. Word has length 27 [2021-03-11 12:14:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:52,040 INFO L480 AbstractCegarLoop]: Abstraction has 3466 states and 11151 transitions. [2021-03-11 12:14:52,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 11151 transitions. [2021-03-11 12:14:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:14:52,042 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:52,042 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:52,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 12:14:52,043 INFO L428 AbstractCegarLoop]: === Iteration 39 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 55425664, now seen corresponding path program 1 times [2021-03-11 12:14:52,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:52,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095724418] [2021-03-11 12:14:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:52,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:52,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:14:52,100 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:52,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,107 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:52,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,116 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-11 12:14:52,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:52,138 INFO L142 QuantifierPusher]: treesize reduction 3, result has 97.1 percent of original size [2021-03-11 12:14:52,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:14:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:52,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:52,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:52,185 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-03-11 12:14:52,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:14:52,204 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:14:52,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:52,231 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:14:52,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:14:52,263 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-03-11 12:14:52,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:14:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:52,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095724418] [2021-03-11 12:14:52,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:52,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-11 12:14:52,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666931330] [2021-03-11 12:14:52,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-11 12:14:52,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:52,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-11 12:14:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-03-11 12:14:52,294 INFO L87 Difference]: Start difference. First operand 3466 states and 11151 transitions. Second operand has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:53,451 INFO L93 Difference]: Finished difference Result 9004 states and 29329 transitions. [2021-03-11 12:14:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 12:14:53,451 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:14:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:53,465 INFO L225 Difference]: With dead ends: 9004 [2021-03-11 12:14:53,466 INFO L226 Difference]: Without dead ends: 9004 [2021-03-11 12:14:53,466 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 668.4ms TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2021-03-11 12:14:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2021-03-11 12:14:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 7393. [2021-03-11 12:14:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7393 states, 7389 states have (on average 3.3200703748815807) internal successors, (24532), 7392 states have internal predecessors, (24532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7393 states to 7393 states and 24532 transitions. [2021-03-11 12:14:53,563 INFO L78 Accepts]: Start accepts. Automaton has 7393 states and 24532 transitions. Word has length 30 [2021-03-11 12:14:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:53,563 INFO L480 AbstractCegarLoop]: Abstraction has 7393 states and 24532 transitions. [2021-03-11 12:14:53,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:53,563 INFO L276 IsEmpty]: Start isEmpty. Operand 7393 states and 24532 transitions. [2021-03-11 12:14:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:14:53,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:53,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:53,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 12:14:53,569 INFO L428 AbstractCegarLoop]: === Iteration 40 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:53,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1699989590, now seen corresponding path program 1 times [2021-03-11 12:14:53,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:53,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216379485] [2021-03-11 12:14:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:53,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:53,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:53,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:14:53,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:53,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:53,631 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 12:14:53,632 INFO L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-03-11 12:14:53,651 INFO L142 QuantifierPusher]: treesize reduction 4, result has 90.2 percent of original size [2021-03-11 12:14:53,651 INFO L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-03-11 12:14:53,659 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-11 12:14:53,660 INFO L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-03-11 12:14:53,660 INFO L142 QuantifierPusher]: treesize reduction 12, result has 89.4 percent of original size [2021-03-11 12:14:53,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:14:53,673 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-11 12:14:53,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:53,684 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-11 12:14:53,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:53,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:53,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:53,707 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:14:53,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:53,735 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:14:53,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:14:53,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 87.3 percent of original size [2021-03-11 12:14:53,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:14:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:53,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216379485] [2021-03-11 12:14:53,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:53,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:14:53,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770732212] [2021-03-11 12:14:53,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:14:53,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:14:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:14:53,817 INFO L87 Difference]: Start difference. First operand 7393 states and 24532 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:55,106 INFO L93 Difference]: Finished difference Result 12988 states and 42545 transitions. [2021-03-11 12:14:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:14:55,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:14:55,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:55,129 INFO L225 Difference]: With dead ends: 12988 [2021-03-11 12:14:55,130 INFO L226 Difference]: Without dead ends: 12988 [2021-03-11 12:14:55,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 795.4ms TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2021-03-11 12:14:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2021-03-11 12:14:55,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 9509. [2021-03-11 12:14:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 9505 states have (on average 3.346449237243556) internal successors, (31808), 9508 states have internal predecessors, (31808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 31808 transitions. [2021-03-11 12:14:55,269 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 31808 transitions. Word has length 30 [2021-03-11 12:14:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:55,269 INFO L480 AbstractCegarLoop]: Abstraction has 9509 states and 31808 transitions. [2021-03-11 12:14:55,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 31808 transitions. [2021-03-11 12:14:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:14:55,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:55,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:55,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 12:14:55,279 INFO L428 AbstractCegarLoop]: === Iteration 41 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1444520374, now seen corresponding path program 2 times [2021-03-11 12:14:55,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:55,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299281474] [2021-03-11 12:14:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:55,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-11 12:14:55,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:55,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:55,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:55,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:55,345 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-03-11 12:14:55,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 12:14:55,355 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-03-11 12:14:55,355 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-11 12:14:55,362 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-03-11 12:14:55,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:14:55,375 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:14:55,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:55,385 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:14:55,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:55,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:55,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:55,407 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-03-11 12:14:55,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:14:55,425 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:14:55,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:55,450 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:14:55,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:14:55,482 INFO L142 QuantifierPusher]: treesize reduction 6, result has 89.8 percent of original size [2021-03-11 12:14:55,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:14:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:55,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299281474] [2021-03-11 12:14:55,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:55,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:14:55,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605591180] [2021-03-11 12:14:55,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:14:55,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:55,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:14:55,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:14:55,511 INFO L87 Difference]: Start difference. First operand 9509 states and 31808 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:57,453 INFO L93 Difference]: Finished difference Result 19122 states and 63468 transitions. [2021-03-11 12:14:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:14:57,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:14:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:14:57,482 INFO L225 Difference]: With dead ends: 19122 [2021-03-11 12:14:57,482 INFO L226 Difference]: Without dead ends: 19122 [2021-03-11 12:14:57,483 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 921.8ms TimeCoverageRelationStatistics Valid=365, Invalid=967, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 12:14:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19122 states. [2021-03-11 12:14:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19122 to 10953. [2021-03-11 12:14:57,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10953 states, 10949 states have (on average 3.3822266873687097) internal successors, (37032), 10952 states have internal predecessors, (37032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10953 states to 10953 states and 37032 transitions. [2021-03-11 12:14:57,651 INFO L78 Accepts]: Start accepts. Automaton has 10953 states and 37032 transitions. Word has length 30 [2021-03-11 12:14:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:14:57,652 INFO L480 AbstractCegarLoop]: Abstraction has 10953 states and 37032 transitions. [2021-03-11 12:14:57,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 10953 states and 37032 transitions. [2021-03-11 12:14:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:14:57,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:14:57,662 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:14:57,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 12:14:57,662 INFO L428 AbstractCegarLoop]: === Iteration 42 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:14:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:14:57,662 INFO L82 PathProgramCache]: Analyzing trace with hash -202852322, now seen corresponding path program 3 times [2021-03-11 12:14:57,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:14:57,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521933726] [2021-03-11 12:14:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:14:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:14:57,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-11 12:14:57,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:57,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:57,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:57,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:14:57,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:57,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:14:57,717 INFO L142 QuantifierPusher]: treesize reduction 3, result has 97.1 percent of original size [2021-03-11 12:14:57,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:14:57,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:57,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:57,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:14:57,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:14:57,765 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-03-11 12:14:57,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:14:57,791 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:14:57,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:14:57,823 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:14:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:14:57,857 INFO L142 QuantifierPusher]: treesize reduction 6, result has 89.8 percent of original size [2021-03-11 12:14:57,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:14:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:14:57,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521933726] [2021-03-11 12:14:57,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:14:57,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:14:57,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163485124] [2021-03-11 12:14:57,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:14:57,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:14:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:14:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:14:57,889 INFO L87 Difference]: Start difference. First operand 10953 states and 37032 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:14:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:14:59,974 INFO L93 Difference]: Finished difference Result 21541 states and 71859 transitions. [2021-03-11 12:14:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:14:59,975 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:14:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:00,008 INFO L225 Difference]: With dead ends: 21541 [2021-03-11 12:15:00,009 INFO L226 Difference]: Without dead ends: 21541 [2021-03-11 12:15:00,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1078.9ms TimeCoverageRelationStatistics Valid=411, Invalid=1149, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:15:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21541 states. [2021-03-11 12:15:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21541 to 10769. [2021-03-11 12:15:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10769 states, 10765 states have (on average 3.3833720390153275) internal successors, (36422), 10768 states have internal predecessors, (36422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10769 states to 10769 states and 36422 transitions. [2021-03-11 12:15:00,190 INFO L78 Accepts]: Start accepts. Automaton has 10769 states and 36422 transitions. Word has length 30 [2021-03-11 12:15:00,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:00,190 INFO L480 AbstractCegarLoop]: Abstraction has 10769 states and 36422 transitions. [2021-03-11 12:15:00,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 10769 states and 36422 transitions. [2021-03-11 12:15:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:15:00,200 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:00,200 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:00,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 12:15:00,200 INFO L428 AbstractCegarLoop]: === Iteration 43 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:00,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:00,200 INFO L82 PathProgramCache]: Analyzing trace with hash -518204526, now seen corresponding path program 4 times [2021-03-11 12:15:00,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:00,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560109060] [2021-03-11 12:15:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:00,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-03-11 12:15:00,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:15:00,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 12:15:00,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:00,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:00,253 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-03-11 12:15:00,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 12:15:00,262 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-03-11 12:15:00,263 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-11 12:15:00,268 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-03-11 12:15:00,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:15:00,281 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:00,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:00,292 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:00,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:00,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:00,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:00,317 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.9 percent of original size [2021-03-11 12:15:00,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:15:00,335 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:15:00,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:00,362 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:15:00,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:15:00,396 INFO L142 QuantifierPusher]: treesize reduction 6, result has 89.8 percent of original size [2021-03-11 12:15:00,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:15:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:00,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560109060] [2021-03-11 12:15:00,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:00,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-11 12:15:00,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586813917] [2021-03-11 12:15:00,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-11 12:15:00,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:00,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-11 12:15:00,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-03-11 12:15:00,428 INFO L87 Difference]: Start difference. First operand 10769 states and 36422 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:02,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:02,225 INFO L93 Difference]: Finished difference Result 16942 states and 56013 transitions. [2021-03-11 12:15:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:15:02,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:15:02,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:02,257 INFO L225 Difference]: With dead ends: 16942 [2021-03-11 12:15:02,257 INFO L226 Difference]: Without dead ends: 16942 [2021-03-11 12:15:02,257 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 818.5ms TimeCoverageRelationStatistics Valid=272, Invalid=658, Unknown=0, NotChecked=0, Total=930 [2021-03-11 12:15:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2021-03-11 12:15:02,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 9015. [2021-03-11 12:15:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9015 states, 9011 states have (on average 3.361780046609699) internal successors, (30293), 9014 states have internal predecessors, (30293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:02,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9015 states to 9015 states and 30293 transitions. [2021-03-11 12:15:02,437 INFO L78 Accepts]: Start accepts. Automaton has 9015 states and 30293 transitions. Word has length 30 [2021-03-11 12:15:02,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:02,438 INFO L480 AbstractCegarLoop]: Abstraction has 9015 states and 30293 transitions. [2021-03-11 12:15:02,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:02,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9015 states and 30293 transitions. [2021-03-11 12:15:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:15:02,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:02,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:02,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 12:15:02,446 INFO L428 AbstractCegarLoop]: === Iteration 44 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:02,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1047850404, now seen corresponding path program 2 times [2021-03-11 12:15:02,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:02,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30006821] [2021-03-11 12:15:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 12:15:02,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:02,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:15:02,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:02,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:15:02,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:02,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:02,498 INFO L142 QuantifierPusher]: treesize reduction 19, result has 50.0 percent of original size [2021-03-11 12:15:02,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 12:15:02,508 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-03-11 12:15:02,508 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-11 12:15:02,513 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-03-11 12:15:02,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:15:02,523 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:02,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:02,533 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:02,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:02,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:02,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:02,558 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:15:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:02,586 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:15:02,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:15:02,619 INFO L142 QuantifierPusher]: treesize reduction 6, result has 89.8 percent of original size [2021-03-11 12:15:02,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:15:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:02,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30006821] [2021-03-11 12:15:02,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:02,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 12:15:02,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750442181] [2021-03-11 12:15:02,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:15:02,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:02,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:15:02,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:15:02,649 INFO L87 Difference]: Start difference. First operand 9015 states and 30293 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:04,317 INFO L93 Difference]: Finished difference Result 16224 states and 53573 transitions. [2021-03-11 12:15:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:15:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:15:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:04,342 INFO L225 Difference]: With dead ends: 16224 [2021-03-11 12:15:04,342 INFO L226 Difference]: Without dead ends: 16224 [2021-03-11 12:15:04,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 777.3ms TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-03-11 12:15:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16224 states. [2021-03-11 12:15:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16224 to 9075. [2021-03-11 12:15:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9075 states, 9071 states have (on average 3.3644581633777975) internal successors, (30519), 9074 states have internal predecessors, (30519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 30519 transitions. [2021-03-11 12:15:04,485 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 30519 transitions. Word has length 30 [2021-03-11 12:15:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:04,485 INFO L480 AbstractCegarLoop]: Abstraction has 9075 states and 30519 transitions. [2021-03-11 12:15:04,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 30519 transitions. [2021-03-11 12:15:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-03-11 12:15:04,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:04,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:04,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 12:15:04,493 INFO L428 AbstractCegarLoop]: === Iteration 45 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1959804530, now seen corresponding path program 3 times [2021-03-11 12:15:04,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:04,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041931014] [2021-03-11 12:15:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:04,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:04,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 12:15:04,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:04,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:15:04,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:04,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:15:04,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:04,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:15:04,530 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-03-11 12:15:04,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 12:15:04,539 INFO L142 QuantifierPusher]: treesize reduction 8, result has 74.2 percent of original size [2021-03-11 12:15:04,539 INFO L147 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size 19 [2021-03-11 12:15:04,544 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.1 percent of original size [2021-03-11 12:15:04,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:15:04,554 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:04,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:04,562 INFO L142 QuantifierPusher]: treesize reduction 8, result has 65.2 percent of original size [2021-03-11 12:15:04,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:04,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:04,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:04,582 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.0 percent of original size [2021-03-11 12:15:04,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:04,609 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:15:04,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:15:04,649 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-03-11 12:15:04,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:15:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:04,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041931014] [2021-03-11 12:15:04,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:04,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-11 12:15:04,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116702831] [2021-03-11 12:15:04,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-11 12:15:04,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:04,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-11 12:15:04,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-03-11 12:15:04,685 INFO L87 Difference]: Start difference. First operand 9075 states and 30519 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:06,549 INFO L93 Difference]: Finished difference Result 16956 states and 56375 transitions. [2021-03-11 12:15:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:15:06,551 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-03-11 12:15:06,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:06,580 INFO L225 Difference]: With dead ends: 16956 [2021-03-11 12:15:06,580 INFO L226 Difference]: Without dead ends: 16956 [2021-03-11 12:15:06,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 893.5ms TimeCoverageRelationStatistics Valid=337, Invalid=995, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 12:15:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2021-03-11 12:15:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 8187. [2021-03-11 12:15:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8187 states, 8183 states have (on average 3.3876328974703656) internal successors, (27721), 8186 states have internal predecessors, (27721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8187 states to 8187 states and 27721 transitions. [2021-03-11 12:15:06,783 INFO L78 Accepts]: Start accepts. Automaton has 8187 states and 27721 transitions. Word has length 30 [2021-03-11 12:15:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:06,783 INFO L480 AbstractCegarLoop]: Abstraction has 8187 states and 27721 transitions. [2021-03-11 12:15:06,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8187 states and 27721 transitions. [2021-03-11 12:15:06,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:06,790 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:06,790 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:06,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 12:15:06,790 INFO L428 AbstractCegarLoop]: === Iteration 46 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1027287929, now seen corresponding path program 1 times [2021-03-11 12:15:06,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:06,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27501085] [2021-03-11 12:15:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:06,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:15:06,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:15:06,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:15:06,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:15:06,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:06,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:06,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:06,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:06,965 INFO L142 QuantifierPusher]: treesize reduction 15, result has 72.7 percent of original size [2021-03-11 12:15:06,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:06,990 INFO L142 QuantifierPusher]: treesize reduction 31, result has 77.9 percent of original size [2021-03-11 12:15:06,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:15:07,036 INFO L142 QuantifierPusher]: treesize reduction 42, result has 77.4 percent of original size [2021-03-11 12:15:07,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-03-11 12:15:07,095 INFO L142 QuantifierPusher]: treesize reduction 76, result has 58.5 percent of original size [2021-03-11 12:15:07,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-03-11 12:15:07,108 INFO L142 QuantifierPusher]: treesize reduction 91, result has 57.5 percent of original size [2021-03-11 12:15:07,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-03-11 12:15:07,170 INFO L142 QuantifierPusher]: treesize reduction 81, result has 61.8 percent of original size [2021-03-11 12:15:07,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:15:07,228 INFO L142 QuantifierPusher]: treesize reduction 42, result has 76.1 percent of original size [2021-03-11 12:15:07,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:15:07,246 INFO L142 QuantifierPusher]: treesize reduction 65, result has 69.3 percent of original size [2021-03-11 12:15:07,246 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.2 percent of original size 140 [2021-03-11 12:15:07,311 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-03-11 12:15:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:15:07,330 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:15:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:15:07,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:07,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:07,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:07,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27501085] [2021-03-11 12:15:07,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:07,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:15:07,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428920146] [2021-03-11 12:15:07,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:15:07,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:07,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:15:07,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:15:07,370 INFO L87 Difference]: Start difference. First operand 8187 states and 27721 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:08,994 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2021-03-11 12:15:09,378 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-03-11 12:15:10,142 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-11 12:15:10,403 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2021-03-11 12:15:10,714 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2021-03-11 12:15:10,889 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-03-11 12:15:11,134 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2021-03-11 12:15:11,296 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2021-03-11 12:15:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:11,454 INFO L93 Difference]: Finished difference Result 9464 states and 31553 transitions. [2021-03-11 12:15:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 12:15:11,455 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:11,469 INFO L225 Difference]: With dead ends: 9464 [2021-03-11 12:15:11,469 INFO L226 Difference]: Without dead ends: 9464 [2021-03-11 12:15:11,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 3258.7ms TimeCoverageRelationStatistics Valid=669, Invalid=1493, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 12:15:11,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9464 states. [2021-03-11 12:15:11,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9464 to 8423. [2021-03-11 12:15:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8419 states have (on average 3.376648057964129) internal successors, (28428), 8422 states have internal predecessors, (28428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28428 transitions. [2021-03-11 12:15:11,580 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28428 transitions. Word has length 31 [2021-03-11 12:15:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:11,580 INFO L480 AbstractCegarLoop]: Abstraction has 8423 states and 28428 transitions. [2021-03-11 12:15:11,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28428 transitions. [2021-03-11 12:15:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:11,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:11,588 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:11,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 12:15:11,588 INFO L428 AbstractCegarLoop]: === Iteration 47 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:11,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1015395009, now seen corresponding path program 2 times [2021-03-11 12:15:11,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:11,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460547986] [2021-03-11 12:15:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:11,623 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:11,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:11,634 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:15:11,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:11,645 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:15:11,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:11,657 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:15:11,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:15:11,668 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:15:11,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:11,683 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:15:11,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:11,701 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:15:11,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:11,719 INFO L142 QuantifierPusher]: treesize reduction 41, result has 51.2 percent of original size [2021-03-11 12:15:11,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:15:11,757 INFO L142 QuantifierPusher]: treesize reduction 62, result has 47.5 percent of original size [2021-03-11 12:15:11,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:11,797 INFO L142 QuantifierPusher]: treesize reduction 66, result has 56.3 percent of original size [2021-03-11 12:15:11,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:15:11,843 INFO L142 QuantifierPusher]: treesize reduction 63, result has 57.1 percent of original size [2021-03-11 12:15:11,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-11 12:15:11,867 INFO L142 QuantifierPusher]: treesize reduction 80, result has 56.8 percent of original size [2021-03-11 12:15:11,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:15:11,934 INFO L142 QuantifierPusher]: treesize reduction 78, result has 58.3 percent of original size [2021-03-11 12:15:11,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:15:11,998 INFO L142 QuantifierPusher]: treesize reduction 78, result has 57.6 percent of original size [2021-03-11 12:15:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-03-11 12:15:12,055 INFO L142 QuantifierPusher]: treesize reduction 70, result has 62.2 percent of original size [2021-03-11 12:15:12,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:15:12,113 INFO L142 QuantifierPusher]: treesize reduction 53, result has 51.8 percent of original size [2021-03-11 12:15:12,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-11 12:15:12,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:12,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:12,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:12,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:12,188 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:15:12,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:15:12,217 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:12,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:12,238 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:12,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:12,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460547986] [2021-03-11 12:15:12,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:12,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:15:12,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061375295] [2021-03-11 12:15:12,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:15:12,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:12,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:15:12,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:15:12,257 INFO L87 Difference]: Start difference. First operand 8423 states and 28428 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:16,120 INFO L93 Difference]: Finished difference Result 11365 states and 37885 transitions. [2021-03-11 12:15:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:15:16,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:16,141 INFO L225 Difference]: With dead ends: 11365 [2021-03-11 12:15:16,141 INFO L226 Difference]: Without dead ends: 11365 [2021-03-11 12:15:16,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1838.5ms TimeCoverageRelationStatistics Valid=271, Invalid=1135, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 12:15:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-03-11 12:15:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 8541. [2021-03-11 12:15:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8541 states, 8537 states have (on average 3.371910507203936) internal successors, (28786), 8540 states have internal predecessors, (28786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8541 states to 8541 states and 28786 transitions. [2021-03-11 12:15:16,292 INFO L78 Accepts]: Start accepts. Automaton has 8541 states and 28786 transitions. Word has length 31 [2021-03-11 12:15:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:16,292 INFO L480 AbstractCegarLoop]: Abstraction has 8541 states and 28786 transitions. [2021-03-11 12:15:16,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8541 states and 28786 transitions. [2021-03-11 12:15:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:16,300 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:16,300 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:16,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 12:15:16,300 INFO L428 AbstractCegarLoop]: === Iteration 48 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:16,300 INFO L82 PathProgramCache]: Analyzing trace with hash -81960441, now seen corresponding path program 3 times [2021-03-11 12:15:16,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:16,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370789382] [2021-03-11 12:15:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:16,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:15:16,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:15:16,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:15:16,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:15:16,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:16,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:16,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:16,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:16,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:15:16,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:16,558 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.2 percent of original size [2021-03-11 12:15:16,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:15:16,602 INFO L142 QuantifierPusher]: treesize reduction 39, result has 72.5 percent of original size [2021-03-11 12:15:16,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:15:16,645 INFO L142 QuantifierPusher]: treesize reduction 72, result has 48.2 percent of original size [2021-03-11 12:15:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:15:16,646 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.0 percent of original size [2021-03-11 12:15:16,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:15:16,699 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.3 percent of original size [2021-03-11 12:15:16,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:15:16,762 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:15:16,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:15:16,826 INFO L142 QuantifierPusher]: treesize reduction 69, result has 62.9 percent of original size [2021-03-11 12:15:16,827 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:15:16,887 INFO L142 QuantifierPusher]: treesize reduction 67, result has 66.7 percent of original size [2021-03-11 12:15:16,888 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-03-11 12:15:16,973 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-03-11 12:15:16,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:15:17,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:17,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:17,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:17,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:17,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370789382] [2021-03-11 12:15:17,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:17,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:17,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135892529] [2021-03-11 12:15:17,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:17,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:17,025 INFO L87 Difference]: Start difference. First operand 8541 states and 28786 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:19,288 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-11 12:15:19,675 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-03-11 12:15:19,873 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-03-11 12:15:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:20,178 INFO L93 Difference]: Finished difference Result 9520 states and 31725 transitions. [2021-03-11 12:15:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:15:20,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:20,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:20,193 INFO L225 Difference]: With dead ends: 9520 [2021-03-11 12:15:20,193 INFO L226 Difference]: Without dead ends: 9520 [2021-03-11 12:15:20,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2390.2ms TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:15:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9520 states. [2021-03-11 12:15:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 8548. [2021-03-11 12:15:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8548 states, 8544 states have (on average 3.371605805243446) internal successors, (28807), 8547 states have internal predecessors, (28807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8548 states to 8548 states and 28807 transitions. [2021-03-11 12:15:20,299 INFO L78 Accepts]: Start accepts. Automaton has 8548 states and 28807 transitions. Word has length 31 [2021-03-11 12:15:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:20,300 INFO L480 AbstractCegarLoop]: Abstraction has 8548 states and 28807 transitions. [2021-03-11 12:15:20,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8548 states and 28807 transitions. [2021-03-11 12:15:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:20,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:20,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:20,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 12:15:20,307 INFO L428 AbstractCegarLoop]: === Iteration 49 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:20,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2018145997, now seen corresponding path program 4 times [2021-03-11 12:15:20,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:20,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203270913] [2021-03-11 12:15:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:20,347 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:15:20,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:15:20,354 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:15:20,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:20,364 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:15:20,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:20,375 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:15:20,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:15:20,384 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:20,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:20,402 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:20,419 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:20,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:20,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 70.5 percent of original size [2021-03-11 12:15:20,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:15:20,465 INFO L142 QuantifierPusher]: treesize reduction 55, result has 64.3 percent of original size [2021-03-11 12:15:20,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:15:20,501 INFO L142 QuantifierPusher]: treesize reduction 55, result has 71.1 percent of original size [2021-03-11 12:15:20,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:15:20,541 INFO L142 QuantifierPusher]: treesize reduction 116, result has 52.7 percent of original size [2021-03-11 12:15:20,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-03-11 12:15:20,554 INFO L142 QuantifierPusher]: treesize reduction 127, result has 54.2 percent of original size [2021-03-11 12:15:20,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-03-11 12:15:20,610 INFO L142 QuantifierPusher]: treesize reduction 108, result has 61.7 percent of original size [2021-03-11 12:15:20,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-03-11 12:15:20,673 INFO L142 QuantifierPusher]: treesize reduction 94, result has 59.1 percent of original size [2021-03-11 12:15:20,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-03-11 12:15:20,695 INFO L142 QuantifierPusher]: treesize reduction 107, result has 57.5 percent of original size [2021-03-11 12:15:20,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-03-11 12:15:20,758 INFO L142 QuantifierPusher]: treesize reduction 46, result has 51.6 percent of original size [2021-03-11 12:15:20,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:15:20,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:20,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:20,802 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:15:20,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:20,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:20,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:20,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:20,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:20,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203270913] [2021-03-11 12:15:20,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:20,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:15:20,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787240292] [2021-03-11 12:15:20,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:15:20,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:20,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:15:20,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:15:20,826 INFO L87 Difference]: Start difference. First operand 8548 states and 28807 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:22,174 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-03-11 12:15:22,494 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-11 12:15:22,667 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2021-03-11 12:15:23,646 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-03-11 12:15:23,787 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-11 12:15:23,949 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-03-11 12:15:24,109 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2021-03-11 12:15:24,321 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-03-11 12:15:24,489 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2021-03-11 12:15:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:24,616 INFO L93 Difference]: Finished difference Result 9705 states and 32318 transitions. [2021-03-11 12:15:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:15:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:24,630 INFO L225 Difference]: With dead ends: 9705 [2021-03-11 12:15:24,630 INFO L226 Difference]: Without dead ends: 9705 [2021-03-11 12:15:24,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2939.9ms TimeCoverageRelationStatistics Valid=576, Invalid=1316, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 12:15:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9705 states. [2021-03-11 12:15:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9705 to 8785. [2021-03-11 12:15:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8785 states, 8781 states have (on average 3.3662453023573624) internal successors, (29559), 8784 states have internal predecessors, (29559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8785 states to 8785 states and 29559 transitions. [2021-03-11 12:15:24,743 INFO L78 Accepts]: Start accepts. Automaton has 8785 states and 29559 transitions. Word has length 31 [2021-03-11 12:15:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:24,744 INFO L480 AbstractCegarLoop]: Abstraction has 8785 states and 29559 transitions. [2021-03-11 12:15:24,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8785 states and 29559 transitions. [2021-03-11 12:15:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:24,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:24,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:24,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 12:15:24,752 INFO L428 AbstractCegarLoop]: === Iteration 50 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash -39587039, now seen corresponding path program 5 times [2021-03-11 12:15:24,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:24,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593750739] [2021-03-11 12:15:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:24,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 12:15:24,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:15:24,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:15:24,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:15:24,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:24,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:24,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:24,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:24,929 INFO L142 QuantifierPusher]: treesize reduction 25, result has 63.8 percent of original size [2021-03-11 12:15:24,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:24,956 INFO L142 QuantifierPusher]: treesize reduction 200, result has 33.3 percent of original size [2021-03-11 12:15:24,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:15:24,993 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.0 percent of original size [2021-03-11 12:15:24,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:15:25,002 INFO L142 QuantifierPusher]: treesize reduction 20, result has 74.7 percent of original size [2021-03-11 12:15:25,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:15:25,050 INFO L142 QuantifierPusher]: treesize reduction 36, result has 76.8 percent of original size [2021-03-11 12:15:25,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-11 12:15:25,102 INFO L142 QuantifierPusher]: treesize reduction 36, result has 77.2 percent of original size [2021-03-11 12:15:25,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:15:25,158 INFO L142 QuantifierPusher]: treesize reduction 36, result has 78.4 percent of original size [2021-03-11 12:15:25,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:15:25,215 INFO L142 QuantifierPusher]: treesize reduction 85, result has 65.2 percent of original size [2021-03-11 12:15:25,216 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.6 percent of original size 152 [2021-03-11 12:15:25,287 INFO L142 QuantifierPusher]: treesize reduction 90, result has 65.3 percent of original size [2021-03-11 12:15:25,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-03-11 12:15:25,355 INFO L142 QuantifierPusher]: treesize reduction 52, result has 45.3 percent of original size [2021-03-11 12:15:25,356 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:15:25,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:25,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:25,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:25,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:25,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593750739] [2021-03-11 12:15:25,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:25,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:25,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676674617] [2021-03-11 12:15:25,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:25,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:25,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:25,411 INFO L87 Difference]: Start difference. First operand 8785 states and 29559 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:27,953 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-03-11 12:15:28,168 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-11 12:15:28,301 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2021-03-11 12:15:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:28,581 INFO L93 Difference]: Finished difference Result 9780 states and 32567 transitions. [2021-03-11 12:15:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:15:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:28,597 INFO L225 Difference]: With dead ends: 9780 [2021-03-11 12:15:28,597 INFO L226 Difference]: Without dead ends: 9780 [2021-03-11 12:15:28,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2392.2ms TimeCoverageRelationStatistics Valid=450, Invalid=1190, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:15:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2021-03-11 12:15:28,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 8792. [2021-03-11 12:15:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8792 states, 8788 states have (on average 3.3659535730541648) internal successors, (29580), 8791 states have internal predecessors, (29580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8792 states to 8792 states and 29580 transitions. [2021-03-11 12:15:28,706 INFO L78 Accepts]: Start accepts. Automaton has 8792 states and 29580 transitions. Word has length 31 [2021-03-11 12:15:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:28,707 INFO L480 AbstractCegarLoop]: Abstraction has 8792 states and 29580 transitions. [2021-03-11 12:15:28,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8792 states and 29580 transitions. [2021-03-11 12:15:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:28,714 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:28,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:28,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 12:15:28,714 INFO L428 AbstractCegarLoop]: === Iteration 51 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2060519399, now seen corresponding path program 6 times [2021-03-11 12:15:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:28,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080472219] [2021-03-11 12:15:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:28,752 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:15:28,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:15:28,759 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:28,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:28,768 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:28,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:28,783 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:15:28,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:15:28,793 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:15:28,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:28,806 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:15:28,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:28,821 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:15:28,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:28,838 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:15:28,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:15:28,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:15:28,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:15:28,878 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:15:28,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:15:28,879 INFO L142 QuantifierPusher]: treesize reduction 40, result has 77.0 percent of original size [2021-03-11 12:15:28,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:15:28,951 INFO L142 QuantifierPusher]: treesize reduction 47, result has 77.8 percent of original size [2021-03-11 12:15:28,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-03-11 12:15:29,031 INFO L142 QuantifierPusher]: treesize reduction 42, result has 77.2 percent of original size [2021-03-11 12:15:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-03-11 12:15:29,114 INFO L142 QuantifierPusher]: treesize reduction 46, result has 75.7 percent of original size [2021-03-11 12:15:29,114 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 140 [2021-03-11 12:15:29,134 INFO L142 QuantifierPusher]: treesize reduction 82, result has 68.8 percent of original size [2021-03-11 12:15:29,135 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.8 percent of original size 177 [2021-03-11 12:15:29,212 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.0 percent of original size [2021-03-11 12:15:29,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:15:29,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:29,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:29,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:29,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:29,273 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:15:29,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:29,302 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:29,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:29,318 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:29,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:29,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080472219] [2021-03-11 12:15:29,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:29,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:15:29,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009680466] [2021-03-11 12:15:29,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:15:29,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:29,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:15:29,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:15:29,375 INFO L87 Difference]: Start difference. First operand 8792 states and 29580 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:30,687 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-11 12:15:31,009 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2021-03-11 12:15:31,229 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2021-03-11 12:15:32,387 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-03-11 12:15:32,620 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2021-03-11 12:15:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:33,574 INFO L93 Difference]: Finished difference Result 11102 states and 37062 transitions. [2021-03-11 12:15:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:15:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:33,591 INFO L225 Difference]: With dead ends: 11102 [2021-03-11 12:15:33,591 INFO L226 Difference]: Without dead ends: 11102 [2021-03-11 12:15:33,591 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2275.8ms TimeCoverageRelationStatistics Valid=355, Invalid=1367, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:15:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11102 states. [2021-03-11 12:15:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11102 to 9218. [2021-03-11 12:15:33,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9218 states, 9214 states have (on average 3.3652051226394617) internal successors, (31007), 9217 states have internal predecessors, (31007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 31007 transitions. [2021-03-11 12:15:33,711 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 31007 transitions. Word has length 31 [2021-03-11 12:15:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:33,711 INFO L480 AbstractCegarLoop]: Abstraction has 9218 states and 31007 transitions. [2021-03-11 12:15:33,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 31007 transitions. [2021-03-11 12:15:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:33,720 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:33,720 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:33,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 12:15:33,720 INFO L428 AbstractCegarLoop]: === Iteration 52 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:33,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2060519400, now seen corresponding path program 1 times [2021-03-11 12:15:33,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:33,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711514749] [2021-03-11 12:15:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:33,757 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:15:33,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:15:33,764 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:33,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:33,774 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:33,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:33,784 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:15:33,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:15:33,794 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:15:33,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:33,807 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:15:33,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:33,822 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:15:33,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:33,839 INFO L142 QuantifierPusher]: treesize reduction 28, result has 54.1 percent of original size [2021-03-11 12:15:33,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:33,857 INFO L142 QuantifierPusher]: treesize reduction 29, result has 69.5 percent of original size [2021-03-11 12:15:33,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 12:15:33,896 INFO L142 QuantifierPusher]: treesize reduction 23, result has 77.2 percent of original size [2021-03-11 12:15:33,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:15:33,907 INFO L142 QuantifierPusher]: treesize reduction 52, result has 66.9 percent of original size [2021-03-11 12:15:33,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:15:33,959 INFO L142 QuantifierPusher]: treesize reduction 49, result has 74.5 percent of original size [2021-03-11 12:15:33,960 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 140 [2021-03-11 12:15:34,027 INFO L142 QuantifierPusher]: treesize reduction 49, result has 74.9 percent of original size [2021-03-11 12:15:34,028 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 143 [2021-03-11 12:15:34,100 INFO L142 QuantifierPusher]: treesize reduction 46, result has 77.3 percent of original size [2021-03-11 12:15:34,101 INFO L147 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size 154 [2021-03-11 12:15:34,121 INFO L142 QuantifierPusher]: treesize reduction 82, result has 70.4 percent of original size [2021-03-11 12:15:34,122 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.9 percent of original size 191 [2021-03-11 12:15:34,215 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.0 percent of original size [2021-03-11 12:15:34,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:15:34,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:34,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:34,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:34,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:15:34,276 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:15:34,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:34,305 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:34,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:34,321 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:15:34,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:15:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:34,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711514749] [2021-03-11 12:15:34,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:34,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:15:34,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387276842] [2021-03-11 12:15:34,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:15:34,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:15:34,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:15:34,338 INFO L87 Difference]: Start difference. First operand 9218 states and 31007 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:36,944 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2021-03-11 12:15:37,352 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:15:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:38,285 INFO L93 Difference]: Finished difference Result 11102 states and 36979 transitions. [2021-03-11 12:15:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:15:38,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:38,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:38,302 INFO L225 Difference]: With dead ends: 11102 [2021-03-11 12:15:38,302 INFO L226 Difference]: Without dead ends: 11102 [2021-03-11 12:15:38,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 2127.9ms TimeCoverageRelationStatistics Valid=355, Invalid=1367, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:15:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11102 states. [2021-03-11 12:15:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11102 to 9084. [2021-03-11 12:15:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9084 states, 9080 states have (on average 3.360352422907489) internal successors, (30512), 9083 states have internal predecessors, (30512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9084 states to 9084 states and 30512 transitions. [2021-03-11 12:15:38,422 INFO L78 Accepts]: Start accepts. Automaton has 9084 states and 30512 transitions. Word has length 31 [2021-03-11 12:15:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:38,422 INFO L480 AbstractCegarLoop]: Abstraction has 9084 states and 30512 transitions. [2021-03-11 12:15:38,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 9084 states and 30512 transitions. [2021-03-11 12:15:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:38,430 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:38,430 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:38,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 12:15:38,430 INFO L428 AbstractCegarLoop]: === Iteration 53 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 440545505, now seen corresponding path program 7 times [2021-03-11 12:15:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:38,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657062868] [2021-03-11 12:15:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:38,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:15:38,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:38,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:38,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:15:38,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:38,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:38,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:15:38,591 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:15:38,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:38,617 INFO L142 QuantifierPusher]: treesize reduction 27, result has 63.0 percent of original size [2021-03-11 12:15:38,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:15:38,646 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:15:38,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:38,647 INFO L142 QuantifierPusher]: treesize reduction 22, result has 76.8 percent of original size [2021-03-11 12:15:38,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:15:38,682 INFO L142 QuantifierPusher]: treesize reduction 80, result has 64.3 percent of original size [2021-03-11 12:15:38,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-03-11 12:15:38,736 INFO L142 QuantifierPusher]: treesize reduction 72, result has 67.7 percent of original size [2021-03-11 12:15:38,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-03-11 12:15:38,792 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.6 percent of original size [2021-03-11 12:15:38,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:15:38,847 INFO L142 QuantifierPusher]: treesize reduction 74, result has 66.7 percent of original size [2021-03-11 12:15:38,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-03-11 12:15:38,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 55.0 percent of original size [2021-03-11 12:15:38,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:15:38,932 INFO L142 QuantifierPusher]: treesize reduction 53, result has 45.9 percent of original size [2021-03-11 12:15:38,932 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.1 percent of original size 41 [2021-03-11 12:15:38,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:38,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:38,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:38,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:38,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657062868] [2021-03-11 12:15:38,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:38,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:38,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974731783] [2021-03-11 12:15:38,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:38,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:38,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:38,989 INFO L87 Difference]: Start difference. First operand 9084 states and 30512 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:41,251 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 66 [2021-03-11 12:15:41,384 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:15:41,571 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-11 12:15:41,722 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2021-03-11 12:15:41,966 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-03-11 12:15:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:42,198 INFO L93 Difference]: Finished difference Result 9978 states and 33199 transitions. [2021-03-11 12:15:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:15:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:42,213 INFO L225 Difference]: With dead ends: 9978 [2021-03-11 12:15:42,213 INFO L226 Difference]: Without dead ends: 9978 [2021-03-11 12:15:42,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2377.9ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:15:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9978 states. [2021-03-11 12:15:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9978 to 9106. [2021-03-11 12:15:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 9102 states have (on average 3.359701164579213) internal successors, (30580), 9105 states have internal predecessors, (30580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 30580 transitions. [2021-03-11 12:15:42,336 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 30580 transitions. Word has length 31 [2021-03-11 12:15:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:42,337 INFO L480 AbstractCegarLoop]: Abstraction has 9106 states and 30580 transitions. [2021-03-11 12:15:42,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:42,337 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 30580 transitions. [2021-03-11 12:15:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:42,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:42,345 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:42,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 12:15:42,345 INFO L428 AbstractCegarLoop]: === Iteration 54 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1015260263, now seen corresponding path program 8 times [2021-03-11 12:15:42,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:42,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236264645] [2021-03-11 12:15:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:42,379 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:15:42,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:15:42,386 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:15:42,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:42,396 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:15:42,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:15:42,407 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:15:42,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:15:42,417 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:15:42,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:42,442 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:15:42,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:42,467 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:15:42,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:42,491 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:15:42,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:15:42,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:15:42,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:15:42,546 INFO L142 QuantifierPusher]: treesize reduction 24, result has 68.4 percent of original size [2021-03-11 12:15:42,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:15:42,555 INFO L142 QuantifierPusher]: treesize reduction 57, result has 50.4 percent of original size [2021-03-11 12:15:42,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:15:42,590 INFO L142 QuantifierPusher]: treesize reduction 93, result has 51.6 percent of original size [2021-03-11 12:15:42,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:15:42,634 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.7 percent of original size [2021-03-11 12:15:42,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:15:42,697 INFO L142 QuantifierPusher]: treesize reduction 75, result has 60.9 percent of original size [2021-03-11 12:15:42,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-11 12:15:42,749 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:15:42,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:15:42,769 INFO L142 QuantifierPusher]: treesize reduction 23, result has 56.6 percent of original size [2021-03-11 12:15:42,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:42,791 INFO L142 QuantifierPusher]: treesize reduction 26, result has 50.9 percent of original size [2021-03-11 12:15:42,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:15:42,815 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:42,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:42,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:42,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236264645] [2021-03-11 12:15:42,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:42,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:42,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306050018] [2021-03-11 12:15:42,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:42,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:42,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:42,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:42,834 INFO L87 Difference]: Start difference. First operand 9106 states and 30580 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:46,262 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-11 12:15:46,418 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-03-11 12:15:46,556 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-11 12:15:46,748 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-11 12:15:46,916 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-11 12:15:47,097 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-03-11 12:15:47,391 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2021-03-11 12:15:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:47,642 INFO L93 Difference]: Finished difference Result 10204 states and 33905 transitions. [2021-03-11 12:15:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 12:15:47,642 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:47,659 INFO L225 Difference]: With dead ends: 10204 [2021-03-11 12:15:47,660 INFO L226 Difference]: Without dead ends: 10204 [2021-03-11 12:15:47,660 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 3558.6ms TimeCoverageRelationStatistics Valid=775, Invalid=1877, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 12:15:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10204 states. [2021-03-11 12:15:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10204 to 9336. [2021-03-11 12:15:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9336 states, 9332 states have (on average 3.3529789969995716) internal successors, (31290), 9335 states have internal predecessors, (31290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:47,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9336 states to 9336 states and 31290 transitions. [2021-03-11 12:15:47,768 INFO L78 Accepts]: Start accepts. Automaton has 9336 states and 31290 transitions. Word has length 31 [2021-03-11 12:15:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:47,768 INFO L480 AbstractCegarLoop]: Abstraction has 9336 states and 31290 transitions. [2021-03-11 12:15:47,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9336 states and 31290 transitions. [2021-03-11 12:15:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:47,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:47,776 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:47,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 12:15:47,776 INFO L428 AbstractCegarLoop]: === Iteration 55 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:47,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1536375865, now seen corresponding path program 9 times [2021-03-11 12:15:47,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:47,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320688310] [2021-03-11 12:15:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:47,812 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:15:47,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:15:47,819 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:15:47,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:15:47,828 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:15:47,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:15:47,838 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:15:47,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:15:47,849 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:47,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:47,885 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:47,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:47,905 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:15:47,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:47,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 65.4 percent of original size [2021-03-11 12:15:47,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:15:47,938 INFO L142 QuantifierPusher]: treesize reduction 34, result has 66.3 percent of original size [2021-03-11 12:15:47,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:15:47,974 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.2 percent of original size [2021-03-11 12:15:47,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:15:47,985 INFO L142 QuantifierPusher]: treesize reduction 37, result has 66.1 percent of original size [2021-03-11 12:15:47,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:15:48,024 INFO L142 QuantifierPusher]: treesize reduction 52, result has 75.6 percent of original size [2021-03-11 12:15:48,025 INFO L147 QuantifierPusher]: treesize reduction 13, result has 91.9 percent of original size 148 [2021-03-11 12:15:48,084 INFO L142 QuantifierPusher]: treesize reduction 57, result has 74.1 percent of original size [2021-03-11 12:15:48,085 INFO L147 QuantifierPusher]: treesize reduction 13, result has 92.0 percent of original size 150 [2021-03-11 12:15:48,149 INFO L142 QuantifierPusher]: treesize reduction 70, result has 67.7 percent of original size [2021-03-11 12:15:48,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-03-11 12:15:48,167 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.3 percent of original size [2021-03-11 12:15:48,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:15:48,196 INFO L142 QuantifierPusher]: treesize reduction 57, result has 39.4 percent of original size [2021-03-11 12:15:48,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:48,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:48,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:48,236 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:15:48,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:48,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:48,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:48,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:48,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:48,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320688310] [2021-03-11 12:15:48,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:48,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:15:48,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756306331] [2021-03-11 12:15:48,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:15:48,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:48,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:15:48,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:15:48,260 INFO L87 Difference]: Start difference. First operand 9336 states and 31290 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:49,954 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-03-11 12:15:50,494 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-03-11 12:15:52,076 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-03-11 12:15:52,226 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2021-03-11 12:15:52,427 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-03-11 12:15:52,592 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2021-03-11 12:15:52,850 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 84 [2021-03-11 12:15:53,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:53,021 INFO L93 Difference]: Finished difference Result 10191 states and 33847 transitions. [2021-03-11 12:15:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 12:15:53,022 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:53,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:53,037 INFO L225 Difference]: With dead ends: 10191 [2021-03-11 12:15:53,037 INFO L226 Difference]: Without dead ends: 10191 [2021-03-11 12:15:53,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3466.4ms TimeCoverageRelationStatistics Valid=727, Invalid=1723, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 12:15:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2021-03-11 12:15:53,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 9001. [2021-03-11 12:15:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9001 states, 8997 states have (on average 3.3627875958652886) internal successors, (30255), 9000 states have internal predecessors, (30255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 30255 transitions. [2021-03-11 12:15:53,151 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 30255 transitions. Word has length 31 [2021-03-11 12:15:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:53,151 INFO L480 AbstractCegarLoop]: Abstraction has 9001 states and 30255 transitions. [2021-03-11 12:15:53,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 30255 transitions. [2021-03-11 12:15:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:53,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:53,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:53,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 12:15:53,160 INFO L428 AbstractCegarLoop]: === Iteration 56 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:53,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1345744555, now seen corresponding path program 10 times [2021-03-11 12:15:53,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:53,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780114117] [2021-03-11 12:15:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:53,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:15:53,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:15:53,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:15:53,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:15:53,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:15:53,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:15:53,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size [2021-03-11 12:15:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:15:53,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size [2021-03-11 12:15:53,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:15:53,385 INFO L142 QuantifierPusher]: treesize reduction 108, result has 41.0 percent of original size [2021-03-11 12:15:53,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-11 12:15:53,422 INFO L142 QuantifierPusher]: treesize reduction 88, result has 55.8 percent of original size [2021-03-11 12:15:53,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:15:53,465 INFO L142 QuantifierPusher]: treesize reduction 85, result has 54.8 percent of original size [2021-03-11 12:15:53,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:15:53,477 INFO L142 QuantifierPusher]: treesize reduction 104, result has 53.2 percent of original size [2021-03-11 12:15:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-03-11 12:15:53,527 INFO L142 QuantifierPusher]: treesize reduction 252, result has 59.9 percent of original size [2021-03-11 12:15:53,529 INFO L147 QuantifierPusher]: treesize reduction 202, result has 46.4 percent of original size 175 [2021-03-11 12:15:53,600 INFO L142 QuantifierPusher]: treesize reduction 104, result has 56.1 percent of original size [2021-03-11 12:15:53,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:15:53,660 INFO L142 QuantifierPusher]: treesize reduction 124, result has 54.1 percent of original size [2021-03-11 12:15:53,661 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 140 [2021-03-11 12:15:53,727 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:15:53,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:15:53,746 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:15:53,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:15:53,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:15:53,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:15:53,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:53,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:53,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780114117] [2021-03-11 12:15:53,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:53,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:53,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457549238] [2021-03-11 12:15:53,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:53,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:53,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:53,786 INFO L87 Difference]: Start difference. First operand 9001 states and 30255 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:55,625 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-03-11 12:15:57,003 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-11 12:15:57,273 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2021-03-11 12:15:57,423 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-03-11 12:15:57,592 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-11 12:15:57,742 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-03-11 12:15:57,986 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 80 [2021-03-11 12:15:58,135 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2021-03-11 12:15:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:15:58,318 INFO L93 Difference]: Finished difference Result 9861 states and 32838 transitions. [2021-03-11 12:15:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 12:15:58,319 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:15:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:15:58,333 INFO L225 Difference]: With dead ends: 9861 [2021-03-11 12:15:58,333 INFO L226 Difference]: Without dead ends: 9861 [2021-03-11 12:15:58,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 3623.2ms TimeCoverageRelationStatistics Valid=770, Invalid=1780, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 12:15:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9861 states. [2021-03-11 12:15:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9861 to 9239. [2021-03-11 12:15:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 9235 states have (on average 3.3533297238765565) internal successors, (30968), 9238 states have internal predecessors, (30968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 30968 transitions. [2021-03-11 12:15:58,442 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 30968 transitions. Word has length 31 [2021-03-11 12:15:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:15:58,442 INFO L480 AbstractCegarLoop]: Abstraction has 9239 states and 30968 transitions. [2021-03-11 12:15:58,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:15:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 30968 transitions. [2021-03-11 12:15:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:15:58,451 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:15:58,451 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:15:58,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 12:15:58,451 INFO L428 AbstractCegarLoop]: === Iteration 57 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:15:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:15:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1357637475, now seen corresponding path program 11 times [2021-03-11 12:15:58,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:15:58,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855643951] [2021-03-11 12:15:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:15:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:15:58,484 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:15:58,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:15:58,496 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:15:58,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:15:58,514 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:15:58,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:15:58,537 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:15:58,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:15:58,556 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:58,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:58,580 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:15:58,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:58,605 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:15:58,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:58,630 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:15:58,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:15:58,656 INFO L142 QuantifierPusher]: treesize reduction 72, result has 53.8 percent of original size [2021-03-11 12:15:58,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-11 12:15:58,694 INFO L142 QuantifierPusher]: treesize reduction 46, result has 72.9 percent of original size [2021-03-11 12:15:58,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:15:58,744 INFO L142 QuantifierPusher]: treesize reduction 37, result has 78.4 percent of original size [2021-03-11 12:15:58,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:15:58,758 INFO L142 QuantifierPusher]: treesize reduction 105, result has 53.3 percent of original size [2021-03-11 12:15:58,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:15:58,810 INFO L142 QuantifierPusher]: treesize reduction 434, result has 30.7 percent of original size [2021-03-11 12:15:58,812 INFO L147 QuantifierPusher]: treesize reduction 37, result has 80.7 percent of original size 155 [2021-03-11 12:15:58,879 INFO L142 QuantifierPusher]: treesize reduction 79, result has 67.4 percent of original size [2021-03-11 12:15:58,880 INFO L147 QuantifierPusher]: treesize reduction 15, result has 90.8 percent of original size 148 [2021-03-11 12:15:58,950 INFO L142 QuantifierPusher]: treesize reduction 137, result has 58.4 percent of original size [2021-03-11 12:15:58,963 INFO L147 QuantifierPusher]: treesize reduction 20, result has 89.6 percent of original size 172 [2021-03-11 12:15:59,054 INFO L142 QuantifierPusher]: treesize reduction 30, result has 55.2 percent of original size [2021-03-11 12:15:59,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:15:59,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:59,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:15:59,091 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:15:59,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:15:59,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:59,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:15:59,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:15:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:15:59,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855643951] [2021-03-11 12:15:59,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:15:59,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:15:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893812664] [2021-03-11 12:15:59,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:15:59,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:15:59,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:15:59,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:15:59,116 INFO L87 Difference]: Start difference. First operand 9239 states and 30968 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:01,006 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-03-11 12:16:01,659 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2021-03-11 12:16:01,856 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2021-03-11 12:16:02,156 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-03-11 12:16:02,338 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-03-11 12:16:02,489 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-03-11 12:16:02,664 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2021-03-11 12:16:02,928 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-03-11 12:16:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:03,063 INFO L93 Difference]: Finished difference Result 10036 states and 33399 transitions. [2021-03-11 12:16:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:16:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:03,078 INFO L225 Difference]: With dead ends: 10036 [2021-03-11 12:16:03,078 INFO L226 Difference]: Without dead ends: 10036 [2021-03-11 12:16:03,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3089.3ms TimeCoverageRelationStatistics Valid=600, Invalid=1380, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 12:16:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2021-03-11 12:16:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 9191. [2021-03-11 12:16:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9187 states have (on average 3.3552846413410253) internal successors, (30825), 9190 states have internal predecessors, (30825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 30825 transitions. [2021-03-11 12:16:03,199 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 30825 transitions. Word has length 31 [2021-03-11 12:16:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:03,199 INFO L480 AbstractCegarLoop]: Abstraction has 9191 states and 30825 transitions. [2021-03-11 12:16:03,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:03,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 30825 transitions. [2021-03-11 12:16:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:03,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:03,208 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:03,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 12:16:03,208 INFO L428 AbstractCegarLoop]: === Iteration 58 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2003895253, now seen corresponding path program 12 times [2021-03-11 12:16:03,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:03,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616517605] [2021-03-11 12:16:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:03,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:16:03,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:03,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:03,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:03,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:03,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:03,323 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.0 percent of original size [2021-03-11 12:16:03,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:16:03,349 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.0 percent of original size [2021-03-11 12:16:03,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:16:03,376 INFO L142 QuantifierPusher]: treesize reduction 33, result has 70.0 percent of original size [2021-03-11 12:16:03,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:16:03,413 INFO L142 QuantifierPusher]: treesize reduction 97, result has 52.5 percent of original size [2021-03-11 12:16:03,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-03-11 12:16:03,454 INFO L142 QuantifierPusher]: treesize reduction 125, result has 37.5 percent of original size [2021-03-11 12:16:03,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-11 12:16:03,464 INFO L142 QuantifierPusher]: treesize reduction 155, result has 31.7 percent of original size [2021-03-11 12:16:03,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:16:03,507 INFO L142 QuantifierPusher]: treesize reduction 103, result has 52.8 percent of original size [2021-03-11 12:16:03,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:16:03,556 INFO L142 QuantifierPusher]: treesize reduction 100, result has 52.8 percent of original size [2021-03-11 12:16:03,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:16:03,600 INFO L142 QuantifierPusher]: treesize reduction 114, result has 52.9 percent of original size [2021-03-11 12:16:03,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-03-11 12:16:03,658 INFO L142 QuantifierPusher]: treesize reduction 120, result has 53.8 percent of original size [2021-03-11 12:16:03,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:16:03,720 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:16:03,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:16:03,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:03,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:03,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:03,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:03,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616517605] [2021-03-11 12:16:03,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:03,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:16:03,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788217174] [2021-03-11 12:16:03,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:16:03,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:03,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:16:03,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:16:03,759 INFO L87 Difference]: Start difference. First operand 9191 states and 30825 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:06,454 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:16:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:06,755 INFO L93 Difference]: Finished difference Result 9798 states and 32647 transitions. [2021-03-11 12:16:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:16:06,755 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:06,770 INFO L225 Difference]: With dead ends: 9798 [2021-03-11 12:16:06,770 INFO L226 Difference]: Without dead ends: 9798 [2021-03-11 12:16:06,770 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2160.2ms TimeCoverageRelationStatistics Valid=439, Invalid=1201, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:16:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9798 states. [2021-03-11 12:16:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9798 to 9198. [2021-03-11 12:16:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9198 states, 9194 states have (on average 3.355014139656298) internal successors, (30846), 9197 states have internal predecessors, (30846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9198 states to 9198 states and 30846 transitions. [2021-03-11 12:16:06,880 INFO L78 Accepts]: Start accepts. Automaton has 9198 states and 30846 transitions. Word has length 31 [2021-03-11 12:16:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:06,880 INFO L480 AbstractCegarLoop]: Abstraction has 9198 states and 30846 transitions. [2021-03-11 12:16:06,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 9198 states and 30846 transitions. [2021-03-11 12:16:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:06,888 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:06,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:06,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 12:16:06,888 INFO L428 AbstractCegarLoop]: === Iteration 59 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash 96211185, now seen corresponding path program 13 times [2021-03-11 12:16:06,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:06,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998575697] [2021-03-11 12:16:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:06,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:06,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:16:06,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:06,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:06,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:06,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:06,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:06,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:16:06,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:06,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:07,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:07,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:07,036 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:16:07,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:07,064 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:16:07,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:07,091 INFO L142 QuantifierPusher]: treesize reduction 42, result has 68.7 percent of original size [2021-03-11 12:16:07,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-03-11 12:16:07,132 INFO L142 QuantifierPusher]: treesize reduction 42, result has 74.4 percent of original size [2021-03-11 12:16:07,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:16:07,178 INFO L142 QuantifierPusher]: treesize reduction 84, result has 54.1 percent of original size [2021-03-11 12:16:07,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:16:07,191 INFO L142 QuantifierPusher]: treesize reduction 114, result has 53.1 percent of original size [2021-03-11 12:16:07,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-03-11 12:16:07,263 INFO L142 QuantifierPusher]: treesize reduction 72, result has 70.1 percent of original size [2021-03-11 12:16:07,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-03-11 12:16:07,349 INFO L142 QuantifierPusher]: treesize reduction 72, result has 70.5 percent of original size [2021-03-11 12:16:07,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-03-11 12:16:07,370 INFO L142 QuantifierPusher]: treesize reduction 97, result has 65.4 percent of original size [2021-03-11 12:16:07,370 INFO L147 QuantifierPusher]: treesize reduction 5, result has 97.3 percent of original size 178 [2021-03-11 12:16:07,452 INFO L142 QuantifierPusher]: treesize reduction 41, result has 65.5 percent of original size [2021-03-11 12:16:07,453 INFO L147 QuantifierPusher]: treesize reduction 12, result has 84.6 percent of original size 66 [2021-03-11 12:16:07,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:07,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:16:07,512 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:16:07,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:07,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:07,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:07,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:07,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:07,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998575697] [2021-03-11 12:16:07,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:07,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:16:07,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235839187] [2021-03-11 12:16:07,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:16:07,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:16:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:16:07,537 INFO L87 Difference]: Start difference. First operand 9198 states and 30846 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:09,196 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-03-11 12:16:10,133 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-03-11 12:16:10,276 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-11 12:16:10,436 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2021-03-11 12:16:10,583 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-11 12:16:10,791 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2021-03-11 12:16:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:10,989 INFO L93 Difference]: Finished difference Result 10156 states and 33775 transitions. [2021-03-11 12:16:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:16:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:11,008 INFO L225 Difference]: With dead ends: 10156 [2021-03-11 12:16:11,008 INFO L226 Difference]: Without dead ends: 10156 [2021-03-11 12:16:11,008 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2712.5ms TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:16:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2021-03-11 12:16:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 9173. [2021-03-11 12:16:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9173 states, 9169 states have (on average 3.3589268186279857) internal successors, (30798), 9172 states have internal predecessors, (30798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9173 states to 9173 states and 30798 transitions. [2021-03-11 12:16:11,135 INFO L78 Accepts]: Start accepts. Automaton has 9173 states and 30798 transitions. Word has length 31 [2021-03-11 12:16:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:11,135 INFO L480 AbstractCegarLoop]: Abstraction has 9173 states and 30798 transitions. [2021-03-11 12:16:11,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 9173 states and 30798 transitions. [2021-03-11 12:16:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:11,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:11,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:11,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 12:16:11,144 INFO L428 AbstractCegarLoop]: === Iteration 60 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1388117957, now seen corresponding path program 14 times [2021-03-11 12:16:11,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:11,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084851724] [2021-03-11 12:16:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:11,174 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:16:11,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:16:11,181 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:16:11,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:16:11,191 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:16:11,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:16:11,201 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:16:11,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:16:11,215 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:16:11,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:11,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:16:11,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:11,267 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:16:11,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:11,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:16:11,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:11,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:16:11,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:16:11,351 INFO L142 QuantifierPusher]: treesize reduction 27, result has 60.3 percent of original size [2021-03-11 12:16:11,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:11,352 INFO L142 QuantifierPusher]: treesize reduction 49, result has 49.0 percent of original size [2021-03-11 12:16:11,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:16:11,383 INFO L142 QuantifierPusher]: treesize reduction 85, result has 56.6 percent of original size [2021-03-11 12:16:11,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:16:11,429 INFO L142 QuantifierPusher]: treesize reduction 89, result has 58.2 percent of original size [2021-03-11 12:16:11,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:16:11,485 INFO L142 QuantifierPusher]: treesize reduction 80, result has 61.4 percent of original size [2021-03-11 12:16:11,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:16:11,500 INFO L142 QuantifierPusher]: treesize reduction 97, result has 58.7 percent of original size [2021-03-11 12:16:11,501 INFO L147 QuantifierPusher]: treesize reduction 17, result has 87.7 percent of original size 121 [2021-03-11 12:16:11,560 INFO L142 QuantifierPusher]: treesize reduction 31, result has 48.3 percent of original size [2021-03-11 12:16:11,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:16:11,578 INFO L142 QuantifierPusher]: treesize reduction 39, result has 40.9 percent of original size [2021-03-11 12:16:11,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:16:11,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:11,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:11,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:11,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:11,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:11,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084851724] [2021-03-11 12:16:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:16:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705987004] [2021-03-11 12:16:11,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:16:11,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:16:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:16:11,616 INFO L87 Difference]: Start difference. First operand 9173 states and 30798 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:14,550 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-03-11 12:16:14,840 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-03-11 12:16:15,165 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2021-03-11 12:16:15,314 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2021-03-11 12:16:15,536 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2021-03-11 12:16:15,676 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2021-03-11 12:16:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:15,853 INFO L93 Difference]: Finished difference Result 10006 states and 33301 transitions. [2021-03-11 12:16:15,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 12:16:15,854 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:15,870 INFO L225 Difference]: With dead ends: 10006 [2021-03-11 12:16:15,870 INFO L226 Difference]: Without dead ends: 10006 [2021-03-11 12:16:15,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3085.7ms TimeCoverageRelationStatistics Valid=691, Invalid=1565, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 12:16:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2021-03-11 12:16:15,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9254. [2021-03-11 12:16:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 9250 states have (on average 3.355783783783784) internal successors, (31041), 9253 states have internal predecessors, (31041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 31041 transitions. [2021-03-11 12:16:15,988 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 31041 transitions. Word has length 31 [2021-03-11 12:16:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:15,988 INFO L480 AbstractCegarLoop]: Abstraction has 9254 states and 31041 transitions. [2021-03-11 12:16:15,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 31041 transitions. [2021-03-11 12:16:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:15,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:15,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:15,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 12:16:15,997 INFO L428 AbstractCegarLoop]: === Iteration 61 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1400010877, now seen corresponding path program 15 times [2021-03-11 12:16:15,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:15,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120517995] [2021-03-11 12:16:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:16,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:16:16,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:16:16,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:16:16,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:16:16,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:16:16,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:16:16,155 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:16:16,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:16,184 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:16:16,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:16,214 INFO L142 QuantifierPusher]: treesize reduction 358, result has 25.3 percent of original size [2021-03-11 12:16:16,215 INFO L147 QuantifierPusher]: treesize reduction 22, result has 81.8 percent of original size 99 [2021-03-11 12:16:16,252 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.6 percent of original size [2021-03-11 12:16:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:16:16,261 INFO L142 QuantifierPusher]: treesize reduction 26, result has 75.5 percent of original size [2021-03-11 12:16:16,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:16:16,305 INFO L142 QuantifierPusher]: treesize reduction 87, result has 64.8 percent of original size [2021-03-11 12:16:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 160 [2021-03-11 12:16:16,366 INFO L142 QuantifierPusher]: treesize reduction 170, result has 62.8 percent of original size [2021-03-11 12:16:16,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 287 [2021-03-11 12:16:16,454 INFO L142 QuantifierPusher]: treesize reduction 95, result has 64.6 percent of original size [2021-03-11 12:16:16,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-03-11 12:16:16,527 INFO L142 QuantifierPusher]: treesize reduction 98, result has 67.2 percent of original size [2021-03-11 12:16:16,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-03-11 12:16:16,608 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:16:16,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:16,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:16:16,642 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:16:16,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:16,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:16,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:16,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120517995] [2021-03-11 12:16:16,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:16,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:16:16,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884468830] [2021-03-11 12:16:16,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:16:16,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:16,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:16:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:16:16,666 INFO L87 Difference]: Start difference. First operand 9254 states and 31041 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:17,896 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-11 12:16:18,170 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-11 12:16:18,570 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-11 12:16:19,399 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-03-11 12:16:19,900 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-03-11 12:16:20,109 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-03-11 12:16:20,381 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2021-03-11 12:16:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:20,512 INFO L93 Difference]: Finished difference Result 10264 states and 34131 transitions. [2021-03-11 12:16:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:16:20,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:20,529 INFO L225 Difference]: With dead ends: 10264 [2021-03-11 12:16:20,529 INFO L226 Difference]: Without dead ends: 10264 [2021-03-11 12:16:20,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2884.3ms TimeCoverageRelationStatistics Valid=540, Invalid=1266, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:16:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2021-03-11 12:16:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 9223. [2021-03-11 12:16:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9223 states, 9219 states have (on average 3.356980149690856) internal successors, (30948), 9222 states have internal predecessors, (30948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9223 states to 9223 states and 30948 transitions. [2021-03-11 12:16:20,649 INFO L78 Accepts]: Start accepts. Automaton has 9223 states and 30948 transitions. Word has length 31 [2021-03-11 12:16:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:20,649 INFO L480 AbstractCegarLoop]: Abstraction has 9223 states and 30948 transitions. [2021-03-11 12:16:20,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9223 states and 30948 transitions. [2021-03-11 12:16:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:20,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:20,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:20,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 12:16:20,658 INFO L428 AbstractCegarLoop]: === Iteration 62 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1961521851, now seen corresponding path program 16 times [2021-03-11 12:16:20,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:20,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656536537] [2021-03-11 12:16:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:20,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:16:20,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:20,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:20,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:16:20,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:20,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:20,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:20,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:16:20,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:20,812 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:16:20,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:20,836 INFO L142 QuantifierPusher]: treesize reduction 33, result has 62.9 percent of original size [2021-03-11 12:16:20,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:20,871 INFO L142 QuantifierPusher]: treesize reduction 18, result has 75.3 percent of original size [2021-03-11 12:16:20,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:20,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.3 percent of original size [2021-03-11 12:16:20,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:16:20,933 INFO L142 QuantifierPusher]: treesize reduction 68, result has 58.8 percent of original size [2021-03-11 12:16:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:16:20,985 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.7 percent of original size [2021-03-11 12:16:20,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-03-11 12:16:21,045 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.1 percent of original size [2021-03-11 12:16:21,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:16:21,062 INFO L142 QuantifierPusher]: treesize reduction 67, result has 63.4 percent of original size [2021-03-11 12:16:21,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:16:21,124 INFO L142 QuantifierPusher]: treesize reduction 60, result has 69.7 percent of original size [2021-03-11 12:16:21,124 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size 133 [2021-03-11 12:16:21,196 INFO L142 QuantifierPusher]: treesize reduction 42, result has 51.7 percent of original size [2021-03-11 12:16:21,196 INFO L147 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size 40 [2021-03-11 12:16:21,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:21,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:21,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:21,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:21,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656536537] [2021-03-11 12:16:21,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:21,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:16:21,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863839730] [2021-03-11 12:16:21,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:16:21,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:21,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:16:21,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:16:21,253 INFO L87 Difference]: Start difference. First operand 9223 states and 30948 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:23,943 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-03-11 12:16:24,072 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-03-11 12:16:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:24,243 INFO L93 Difference]: Finished difference Result 9952 states and 33139 transitions. [2021-03-11 12:16:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:16:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:24,259 INFO L225 Difference]: With dead ends: 9952 [2021-03-11 12:16:24,259 INFO L226 Difference]: Without dead ends: 9952 [2021-03-11 12:16:24,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2225.2ms TimeCoverageRelationStatistics Valid=434, Invalid=1126, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:16:24,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9952 states. [2021-03-11 12:16:24,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9952 to 9230. [2021-03-11 12:16:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9230 states, 9226 states have (on average 3.356709299804899) internal successors, (30969), 9229 states have internal predecessors, (30969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9230 states to 9230 states and 30969 transitions. [2021-03-11 12:16:24,375 INFO L78 Accepts]: Start accepts. Automaton has 9230 states and 30969 transitions. Word has length 31 [2021-03-11 12:16:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:24,375 INFO L480 AbstractCegarLoop]: Abstraction has 9230 states and 30969 transitions. [2021-03-11 12:16:24,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9230 states and 30969 transitions. [2021-03-11 12:16:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:24,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:24,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:24,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 12:16:24,383 INFO L428 AbstractCegarLoop]: === Iteration 63 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 138584587, now seen corresponding path program 17 times [2021-03-11 12:16:24,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:24,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872251450] [2021-03-11 12:16:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:24,423 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:16:24,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:16:24,430 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:24,450 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:24,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:24,461 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:16:24,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:24,471 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:24,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:24,488 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:16:24,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:24,507 INFO L142 QuantifierPusher]: treesize reduction 63, result has 39.4 percent of original size [2021-03-11 12:16:24,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:24,545 INFO L142 QuantifierPusher]: treesize reduction 63, result has 39.4 percent of original size [2021-03-11 12:16:24,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:24,581 INFO L142 QuantifierPusher]: treesize reduction 79, result has 51.5 percent of original size [2021-03-11 12:16:24,581 INFO L147 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-03-11 12:16:24,636 INFO L142 QuantifierPusher]: treesize reduction 56, result has 63.4 percent of original size [2021-03-11 12:16:24,636 INFO L147 QuantifierPusher]: treesize reduction 14, result has 85.6 percent of original size 83 [2021-03-11 12:16:24,647 INFO L142 QuantifierPusher]: treesize reduction 63, result has 63.2 percent of original size [2021-03-11 12:16:24,648 INFO L147 QuantifierPusher]: treesize reduction 14, result has 87.0 percent of original size 94 [2021-03-11 12:16:24,709 INFO L142 QuantifierPusher]: treesize reduction 136, result has 45.4 percent of original size [2021-03-11 12:16:24,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:16:24,779 INFO L142 QuantifierPusher]: treesize reduction 102, result has 58.4 percent of original size [2021-03-11 12:16:24,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-03-11 12:16:24,858 INFO L142 QuantifierPusher]: treesize reduction 111, result has 55.2 percent of original size [2021-03-11 12:16:24,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-03-11 12:16:24,877 INFO L142 QuantifierPusher]: treesize reduction 115, result has 57.4 percent of original size [2021-03-11 12:16:24,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-03-11 12:16:24,961 INFO L142 QuantifierPusher]: treesize reduction 48, result has 52.0 percent of original size [2021-03-11 12:16:24,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:16:24,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:24,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:25,011 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-03-11 12:16:25,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:25,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:25,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:25,036 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-11 12:16:25,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:25,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:25,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:25,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872251450] [2021-03-11 12:16:25,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:25,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:16:25,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017468113] [2021-03-11 12:16:25,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:16:25,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:16:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:16:25,038 INFO L87 Difference]: Start difference. First operand 9230 states and 30969 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:26,242 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-11 12:16:26,553 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2021-03-11 12:16:27,491 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2021-03-11 12:16:27,678 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-03-11 12:16:27,878 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-03-11 12:16:28,108 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-03-11 12:16:28,283 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2021-03-11 12:16:28,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:28,381 INFO L93 Difference]: Finished difference Result 10180 states and 33859 transitions. [2021-03-11 12:16:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 12:16:28,382 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:28,397 INFO L225 Difference]: With dead ends: 10180 [2021-03-11 12:16:28,397 INFO L226 Difference]: Without dead ends: 10180 [2021-03-11 12:16:28,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2714.8ms TimeCoverageRelationStatistics Valid=462, Invalid=1098, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:16:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10180 states. [2021-03-11 12:16:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10180 to 9213. [2021-03-11 12:16:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9213 states, 9209 states have (on average 3.3573677923770227) internal successors, (30918), 9212 states have internal predecessors, (30918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9213 states to 9213 states and 30918 transitions. [2021-03-11 12:16:28,513 INFO L78 Accepts]: Start accepts. Automaton has 9213 states and 30918 transitions. Word has length 31 [2021-03-11 12:16:28,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:28,513 INFO L480 AbstractCegarLoop]: Abstraction has 9213 states and 30918 transitions. [2021-03-11 12:16:28,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9213 states and 30918 transitions. [2021-03-11 12:16:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:28,521 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:28,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:28,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 12:16:28,523 INFO L428 AbstractCegarLoop]: === Iteration 64 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:28,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1481389307, now seen corresponding path program 18 times [2021-03-11 12:16:28,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:28,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997527128] [2021-03-11 12:16:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:28,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:16:28,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:16:28,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:16:28,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:16:28,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:28,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:28,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:28,652 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:16:28,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:28,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:16:28,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:28,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:16:28,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:16:28,734 INFO L142 QuantifierPusher]: treesize reduction 27, result has 60.3 percent of original size [2021-03-11 12:16:28,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:28,735 INFO L142 QuantifierPusher]: treesize reduction 53, result has 48.5 percent of original size [2021-03-11 12:16:28,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:16:28,769 INFO L142 QuantifierPusher]: treesize reduction 89, result has 50.6 percent of original size [2021-03-11 12:16:28,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:16:28,824 INFO L142 QuantifierPusher]: treesize reduction 76, result has 60.6 percent of original size [2021-03-11 12:16:28,825 INFO L147 QuantifierPusher]: treesize reduction 13, result has 88.9 percent of original size 104 [2021-03-11 12:16:28,876 INFO L142 QuantifierPusher]: treesize reduction 68, result has 62.0 percent of original size [2021-03-11 12:16:28,877 INFO L147 QuantifierPusher]: treesize reduction 13, result has 88.3 percent of original size 98 [2021-03-11 12:16:28,922 INFO L142 QuantifierPusher]: treesize reduction 75, result has 61.3 percent of original size [2021-03-11 12:16:28,923 INFO L147 QuantifierPusher]: treesize reduction 13, result has 89.1 percent of original size 106 [2021-03-11 12:16:28,974 INFO L142 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-03-11 12:16:28,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:28,995 INFO L142 QuantifierPusher]: treesize reduction 26, result has 50.9 percent of original size [2021-03-11 12:16:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:16:29,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:29,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:29,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:29,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997527128] [2021-03-11 12:16:29,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:29,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:16:29,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555845281] [2021-03-11 12:16:29,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:16:29,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:29,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:16:29,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:16:29,035 INFO L87 Difference]: Start difference. First operand 9213 states and 30918 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:31,224 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-03-11 12:16:31,504 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2021-03-11 12:16:31,860 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2021-03-11 12:16:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:32,039 INFO L93 Difference]: Finished difference Result 9970 states and 33195 transitions. [2021-03-11 12:16:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:16:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:32,056 INFO L225 Difference]: With dead ends: 9970 [2021-03-11 12:16:32,057 INFO L226 Difference]: Without dead ends: 9970 [2021-03-11 12:16:32,057 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 2181.5ms TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:16:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2021-03-11 12:16:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9228. [2021-03-11 12:16:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9224 states have (on average 3.3570034692107544) internal successors, (30965), 9227 states have internal predecessors, (30965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 30965 transitions. [2021-03-11 12:16:32,185 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 30965 transitions. Word has length 31 [2021-03-11 12:16:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:32,185 INFO L480 AbstractCegarLoop]: Abstraction has 9228 states and 30965 transitions. [2021-03-11 12:16:32,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 30965 transitions. [2021-03-11 12:16:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:32,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:32,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:32,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 12:16:32,195 INFO L428 AbstractCegarLoop]: === Iteration 65 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1357772221, now seen corresponding path program 19 times [2021-03-11 12:16:32,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:32,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164665644] [2021-03-11 12:16:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:32,229 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:16:32,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:16:32,237 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:16:32,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:32,249 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:16:32,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:32,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:16:32,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:16:32,275 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:16:32,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:32,304 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:16:32,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:32,329 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-03-11 12:16:32,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:32,354 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-03-11 12:16:32,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:32,379 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.3 percent of original size [2021-03-11 12:16:32,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:16:32,418 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-03-11 12:16:32,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:16:32,428 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-03-11 12:16:32,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:16:32,465 INFO L142 QuantifierPusher]: treesize reduction 46, result has 72.6 percent of original size [2021-03-11 12:16:32,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:16:32,522 INFO L142 QuantifierPusher]: treesize reduction 46, result has 72.6 percent of original size [2021-03-11 12:16:32,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:16:32,528 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-03-11 12:16:32,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:16:32,547 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:16:32,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:16:32,573 INFO L142 QuantifierPusher]: treesize reduction 49, result has 41.7 percent of original size [2021-03-11 12:16:32,573 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:16:32,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:32,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:32,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:32,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164665644] [2021-03-11 12:16:32,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:32,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:16:32,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255959490] [2021-03-11 12:16:32,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:16:32,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:32,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:16:32,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:16:32,621 INFO L87 Difference]: Start difference. First operand 9228 states and 30965 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:35,443 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:16:35,697 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-11 12:16:36,124 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-03-11 12:16:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:36,328 INFO L93 Difference]: Finished difference Result 10222 states and 33995 transitions. [2021-03-11 12:16:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 12:16:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:36,346 INFO L225 Difference]: With dead ends: 10222 [2021-03-11 12:16:36,346 INFO L226 Difference]: Without dead ends: 10222 [2021-03-11 12:16:36,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2618.2ms TimeCoverageRelationStatistics Valid=557, Invalid=1249, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:16:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10222 states. [2021-03-11 12:16:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10222 to 9308. [2021-03-11 12:16:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9308 states, 9304 states have (on average 3.3582330180567497) internal successors, (31245), 9307 states have internal predecessors, (31245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9308 states to 9308 states and 31245 transitions. [2021-03-11 12:16:36,468 INFO L78 Accepts]: Start accepts. Automaton has 9308 states and 31245 transitions. Word has length 31 [2021-03-11 12:16:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:36,468 INFO L480 AbstractCegarLoop]: Abstraction has 9308 states and 31245 transitions. [2021-03-11 12:16:36,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 9308 states and 31245 transitions. [2021-03-11 12:16:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:36,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:36,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:36,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 12:16:36,519 INFO L428 AbstractCegarLoop]: === Iteration 66 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash 836656619, now seen corresponding path program 20 times [2021-03-11 12:16:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:36,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937228237] [2021-03-11 12:16:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:36,554 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:16:36,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:16:36,561 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:16:36,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:36,572 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:16:36,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:36,585 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:16:36,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:36,598 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:36,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:36,615 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:16:36,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:36,634 INFO L142 QuantifierPusher]: treesize reduction 33, result has 56.6 percent of original size [2021-03-11 12:16:36,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:16:36,673 INFO L142 QuantifierPusher]: treesize reduction 35, result has 56.8 percent of original size [2021-03-11 12:16:36,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:16:36,716 INFO L142 QuantifierPusher]: treesize reduction 59, result has 56.6 percent of original size [2021-03-11 12:16:36,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:16:36,771 INFO L142 QuantifierPusher]: treesize reduction 103, result has 51.0 percent of original size [2021-03-11 12:16:36,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-03-11 12:16:36,836 INFO L142 QuantifierPusher]: treesize reduction 90, result has 59.6 percent of original size [2021-03-11 12:16:36,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:16:36,914 INFO L142 QuantifierPusher]: treesize reduction 85, result has 59.5 percent of original size [2021-03-11 12:16:36,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:16:36,984 INFO L142 QuantifierPusher]: treesize reduction 16, result has 69.2 percent of original size [2021-03-11 12:16:36,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:37,006 INFO L142 QuantifierPusher]: treesize reduction 32, result has 70.1 percent of original size [2021-03-11 12:16:37,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-11 12:16:37,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:37,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:37,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:37,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:37,088 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:16:37,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:37,119 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:37,147 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:37,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:37,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937228237] [2021-03-11 12:16:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:16:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864853343] [2021-03-11 12:16:37,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:16:37,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:16:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:16:37,164 INFO L87 Difference]: Start difference. First operand 9308 states and 31245 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:38,139 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-11 12:16:38,466 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-03-11 12:16:38,598 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-03-11 12:16:38,944 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-11 12:16:39,266 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-11 12:16:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:41,208 INFO L93 Difference]: Finished difference Result 12375 states and 41167 transitions. [2021-03-11 12:16:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 12:16:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:41,229 INFO L225 Difference]: With dead ends: 12375 [2021-03-11 12:16:41,230 INFO L226 Difference]: Without dead ends: 12375 [2021-03-11 12:16:41,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2237.5ms TimeCoverageRelationStatistics Valid=341, Invalid=1821, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 12:16:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12375 states. [2021-03-11 12:16:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12375 to 9682. [2021-03-11 12:16:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9682 states, 9678 states have (on average 3.3483157677206035) internal successors, (32405), 9681 states have internal predecessors, (32405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 32405 transitions. [2021-03-11 12:16:41,373 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 32405 transitions. Word has length 31 [2021-03-11 12:16:41,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:41,373 INFO L480 AbstractCegarLoop]: Abstraction has 9682 states and 32405 transitions. [2021-03-11 12:16:41,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 32405 transitions. [2021-03-11 12:16:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:41,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:41,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:41,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 12:16:41,383 INFO L428 AbstractCegarLoop]: === Iteration 67 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:41,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1468660449, now seen corresponding path program 21 times [2021-03-11 12:16:41,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:41,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082878622] [2021-03-11 12:16:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:41,417 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:16:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:16:41,424 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:16:41,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:41,434 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:16:41,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:16:41,446 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:16:41,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:41,457 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:16:41,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:16:41,481 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:16:41,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:41,508 INFO L142 QuantifierPusher]: treesize reduction 44, result has 50.0 percent of original size [2021-03-11 12:16:41,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:41,543 INFO L142 QuantifierPusher]: treesize reduction 61, result has 50.8 percent of original size [2021-03-11 12:16:41,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:16:41,589 INFO L142 QuantifierPusher]: treesize reduction 45, result has 64.6 percent of original size [2021-03-11 12:16:41,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:16:41,601 INFO L142 QuantifierPusher]: treesize reduction 64, result has 63.0 percent of original size [2021-03-11 12:16:41,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:16:41,658 INFO L142 QuantifierPusher]: treesize reduction 64, result has 63.0 percent of original size [2021-03-11 12:16:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:16:41,715 INFO L142 QuantifierPusher]: treesize reduction 86, result has 60.6 percent of original size [2021-03-11 12:16:41,716 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.9 percent of original size 124 [2021-03-11 12:16:41,786 INFO L142 QuantifierPusher]: treesize reduction 59, result has 73.2 percent of original size [2021-03-11 12:16:41,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-03-11 12:16:41,867 INFO L142 QuantifierPusher]: treesize reduction 59, result has 72.8 percent of original size [2021-03-11 12:16:41,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-03-11 12:16:41,891 INFO L142 QuantifierPusher]: treesize reduction 66, result has 70.1 percent of original size [2021-03-11 12:16:41,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-03-11 12:16:41,969 INFO L142 QuantifierPusher]: treesize reduction 52, result has 58.4 percent of original size [2021-03-11 12:16:41,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:16:42,016 INFO L142 QuantifierPusher]: treesize reduction 55, result has 68.6 percent of original size [2021-03-11 12:16:42,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:16:42,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 12:16:42,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 12:16:42,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:42,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:42,137 INFO L142 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-03-11 12:16:42,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:42,168 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:42,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:42,184 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:42,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:42,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082878622] [2021-03-11 12:16:42,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:42,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-03-11 12:16:42,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192336053] [2021-03-11 12:16:42,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-11 12:16:42,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:42,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-11 12:16:42,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-03-11 12:16:42,202 INFO L87 Difference]: Start difference. First operand 9682 states and 32405 transitions. Second operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:43,594 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-03-11 12:16:43,915 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-03-11 12:16:44,429 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-03-11 12:16:44,695 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-03-11 12:16:44,905 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-11 12:16:45,211 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-11 12:16:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:46,091 INFO L93 Difference]: Finished difference Result 11967 states and 39880 transitions. [2021-03-11 12:16:46,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:16:46,092 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:46,112 INFO L225 Difference]: With dead ends: 11967 [2021-03-11 12:16:46,112 INFO L226 Difference]: Without dead ends: 11967 [2021-03-11 12:16:46,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2418.3ms TimeCoverageRelationStatistics Valid=348, Invalid=1374, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:16:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11967 states. [2021-03-11 12:16:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11967 to 9794. [2021-03-11 12:16:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9794 states, 9790 states have (on average 3.3447395301327885) internal successors, (32745), 9793 states have internal predecessors, (32745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9794 states to 9794 states and 32745 transitions. [2021-03-11 12:16:46,257 INFO L78 Accepts]: Start accepts. Automaton has 9794 states and 32745 transitions. Word has length 31 [2021-03-11 12:16:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:46,257 INFO L480 AbstractCegarLoop]: Abstraction has 9794 states and 32745 transitions. [2021-03-11 12:16:46,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 9794 states and 32745 transitions. [2021-03-11 12:16:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:46,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:46,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:46,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 12:16:46,267 INFO L428 AbstractCegarLoop]: === Iteration 68 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1480553369, now seen corresponding path program 22 times [2021-03-11 12:16:46,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:46,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007788667] [2021-03-11 12:16:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:46,298 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:16:46,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:16:46,309 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:16:46,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:16:46,330 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:16:46,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:16:46,350 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:16:46,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:16:46,369 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:46,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:46,394 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:46,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:46,419 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:16:46,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:16:46,447 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-03-11 12:16:46,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:16:46,486 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.1 percent of original size [2021-03-11 12:16:46,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:16:46,496 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.2 percent of original size [2021-03-11 12:16:46,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:16:46,535 INFO L142 QuantifierPusher]: treesize reduction 22, result has 73.2 percent of original size [2021-03-11 12:16:46,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:16:46,574 INFO L142 QuantifierPusher]: treesize reduction 100, result has 56.9 percent of original size [2021-03-11 12:16:46,574 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.2 percent of original size 127 [2021-03-11 12:16:46,630 INFO L142 QuantifierPusher]: treesize reduction 234, result has 53.9 percent of original size [2021-03-11 12:16:46,631 INFO L147 QuantifierPusher]: treesize reduction 50, result has 81.8 percent of original size 224 [2021-03-11 12:16:46,711 INFO L142 QuantifierPusher]: treesize reduction 108, result has 57.3 percent of original size [2021-03-11 12:16:46,712 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size 141 [2021-03-11 12:16:46,778 INFO L142 QuantifierPusher]: treesize reduction 129, result has 54.6 percent of original size [2021-03-11 12:16:46,779 INFO L147 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size 152 [2021-03-11 12:16:46,846 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:16:46,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:46,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:46,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:16:46,881 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:16:46,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:16:46,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:46,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:46,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:46,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:46,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007788667] [2021-03-11 12:16:46,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:46,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:16:46,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026031797] [2021-03-11 12:16:46,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:16:46,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:46,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:16:46,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:16:46,911 INFO L87 Difference]: Start difference. First operand 9794 states and 32745 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:47,983 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-03-11 12:16:48,270 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-11 12:16:48,626 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-11 12:16:49,599 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-11 12:16:49,788 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-11 12:16:50,025 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 82 [2021-03-11 12:16:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:50,223 INFO L93 Difference]: Finished difference Result 10396 states and 34585 transitions. [2021-03-11 12:16:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 12:16:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:50,242 INFO L225 Difference]: With dead ends: 10396 [2021-03-11 12:16:50,242 INFO L226 Difference]: Without dead ends: 10396 [2021-03-11 12:16:50,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2335.2ms TimeCoverageRelationStatistics Valid=435, Invalid=1047, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:16:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10396 states. [2021-03-11 12:16:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10396 to 9748. [2021-03-11 12:16:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9748 states, 9744 states have (on average 3.345956486042693) internal successors, (32603), 9747 states have internal predecessors, (32603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9748 states to 9748 states and 32603 transitions. [2021-03-11 12:16:50,371 INFO L78 Accepts]: Start accepts. Automaton has 9748 states and 32603 transitions. Word has length 31 [2021-03-11 12:16:50,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:50,371 INFO L480 AbstractCegarLoop]: Abstraction has 9748 states and 32603 transitions. [2021-03-11 12:16:50,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:50,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9748 states and 32603 transitions. [2021-03-11 12:16:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:50,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:50,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:50,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 12:16:50,381 INFO L428 AbstractCegarLoop]: === Iteration 69 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1880979359, now seen corresponding path program 23 times [2021-03-11 12:16:50,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:50,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407914984] [2021-03-11 12:16:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:50,415 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:16:50,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:16:50,423 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:50,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:50,434 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:50,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:50,447 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:16:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:50,458 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:50,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:50,472 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:50,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 62.5 percent of original size [2021-03-11 12:16:50,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:50,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-03-11 12:16:50,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:16:50,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 80.0 percent of original size [2021-03-11 12:16:50,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:16:50,550 INFO L142 QuantifierPusher]: treesize reduction 28, result has 74.1 percent of original size [2021-03-11 12:16:50,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:16:50,589 INFO L142 QuantifierPusher]: treesize reduction 28, result has 74.8 percent of original size [2021-03-11 12:16:50,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:16:50,634 INFO L142 QuantifierPusher]: treesize reduction 34, result has 80.6 percent of original size [2021-03-11 12:16:50,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-03-11 12:16:50,698 INFO L142 QuantifierPusher]: treesize reduction 27, result has 78.9 percent of original size [2021-03-11 12:16:50,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:16:50,754 INFO L142 QuantifierPusher]: treesize reduction 27, result has 80.3 percent of original size [2021-03-11 12:16:50,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:16:50,782 INFO L142 QuantifierPusher]: treesize reduction 55, result has 70.4 percent of original size [2021-03-11 12:16:50,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:16:50,842 INFO L142 QuantifierPusher]: treesize reduction 38, result has 64.5 percent of original size [2021-03-11 12:16:50,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:16:50,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:50,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:50,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:50,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:50,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:16:50,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:50,953 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:50,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:50,969 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:50,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:50,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407914984] [2021-03-11 12:16:50,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:50,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:16:50,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040135588] [2021-03-11 12:16:50,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:16:50,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:50,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:16:50,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:16:50,987 INFO L87 Difference]: Start difference. First operand 9748 states and 32603 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:51,749 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2021-03-11 12:16:52,407 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-11 12:16:52,718 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-11 12:16:52,923 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-03-11 12:16:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:54,240 INFO L93 Difference]: Finished difference Result 11208 states and 37407 transitions. [2021-03-11 12:16:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:16:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:54,260 INFO L225 Difference]: With dead ends: 11208 [2021-03-11 12:16:54,260 INFO L226 Difference]: Without dead ends: 11208 [2021-03-11 12:16:54,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1582.6ms TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:16:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2021-03-11 12:16:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 9950. [2021-03-11 12:16:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9950 states, 9946 states have (on average 3.3486828875930024) internal successors, (33306), 9949 states have internal predecessors, (33306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9950 states to 9950 states and 33306 transitions. [2021-03-11 12:16:54,402 INFO L78 Accepts]: Start accepts. Automaton has 9950 states and 33306 transitions. Word has length 31 [2021-03-11 12:16:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:54,402 INFO L480 AbstractCegarLoop]: Abstraction has 9950 states and 33306 transitions. [2021-03-11 12:16:54,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 9950 states and 33306 transitions. [2021-03-11 12:16:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:54,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:54,412 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:54,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 12:16:54,412 INFO L428 AbstractCegarLoop]: === Iteration 70 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1880979358, now seen corresponding path program 2 times [2021-03-11 12:16:54,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:54,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780856697] [2021-03-11 12:16:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:54,447 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:16:54,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:16:54,455 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:54,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:54,466 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:16:54,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:16:54,478 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:16:54,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:16:54,489 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:54,503 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:16:54,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:54,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 62.5 percent of original size [2021-03-11 12:16:54,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:16:54,535 INFO L142 QuantifierPusher]: treesize reduction 43, result has 56.6 percent of original size [2021-03-11 12:16:54,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:54,569 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.6 percent of original size [2021-03-11 12:16:54,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 12:16:54,580 INFO L142 QuantifierPusher]: treesize reduction 32, result has 70.4 percent of original size [2021-03-11 12:16:54,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-11 12:16:54,618 INFO L142 QuantifierPusher]: treesize reduction 32, result has 71.2 percent of original size [2021-03-11 12:16:54,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-03-11 12:16:54,660 INFO L142 QuantifierPusher]: treesize reduction 81, result has 53.7 percent of original size [2021-03-11 12:16:54,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-03-11 12:16:54,710 INFO L142 QuantifierPusher]: treesize reduction 27, result has 78.9 percent of original size [2021-03-11 12:16:54,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:16:54,765 INFO L142 QuantifierPusher]: treesize reduction 27, result has 80.3 percent of original size [2021-03-11 12:16:54,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:16:54,782 INFO L142 QuantifierPusher]: treesize reduction 55, result has 70.4 percent of original size [2021-03-11 12:16:54,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:16:54,841 INFO L142 QuantifierPusher]: treesize reduction 38, result has 64.5 percent of original size [2021-03-11 12:16:54,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:16:54,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:54,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:54,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:54,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:16:54,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:16:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:54,950 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:54,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:54,966 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:16:54,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:16:54,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:54,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780856697] [2021-03-11 12:16:54,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:54,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:16:54,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985110917] [2021-03-11 12:16:54,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:16:54,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:54,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:16:54,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:16:54,984 INFO L87 Difference]: Start difference. First operand 9950 states and 33306 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:56,343 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2021-03-11 12:16:56,646 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-11 12:16:56,848 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-03-11 12:16:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:16:58,229 INFO L93 Difference]: Finished difference Result 11208 states and 37336 transitions. [2021-03-11 12:16:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:16:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:16:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:16:58,249 INFO L225 Difference]: With dead ends: 11208 [2021-03-11 12:16:58,249 INFO L226 Difference]: Without dead ends: 11208 [2021-03-11 12:16:58,249 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1506.6ms TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:16:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2021-03-11 12:16:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 9816. [2021-03-11 12:16:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9816 states, 9812 states have (on average 3.343966571545047) internal successors, (32811), 9815 states have internal predecessors, (32811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9816 states to 9816 states and 32811 transitions. [2021-03-11 12:16:58,385 INFO L78 Accepts]: Start accepts. Automaton has 9816 states and 32811 transitions. Word has length 31 [2021-03-11 12:16:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:16:58,385 INFO L480 AbstractCegarLoop]: Abstraction has 9816 states and 32811 transitions. [2021-03-11 12:16:58,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:16:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9816 states and 32811 transitions. [2021-03-11 12:16:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:16:58,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:16:58,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:16:58,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 12:16:58,394 INFO L428 AbstractCegarLoop]: === Iteration 71 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:16:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:16:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1400846815, now seen corresponding path program 24 times [2021-03-11 12:16:58,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:16:58,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647259514] [2021-03-11 12:16:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:16:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:16:58,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:16:58,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:58,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:16:58,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:16:58,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:58,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:58,517 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:16:58,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:58,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 63.0 percent of original size [2021-03-11 12:16:58,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:16:58,573 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:16:58,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:16:58,574 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:16:58,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:58,610 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:16:58,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:16:58,646 INFO L142 QuantifierPusher]: treesize reduction 55, result has 68.9 percent of original size [2021-03-11 12:16:58,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:16:58,706 INFO L142 QuantifierPusher]: treesize reduction 38, result has 76.4 percent of original size [2021-03-11 12:16:58,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-03-11 12:16:58,772 INFO L142 QuantifierPusher]: treesize reduction 39, result has 75.8 percent of original size [2021-03-11 12:16:58,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:16:58,789 INFO L142 QuantifierPusher]: treesize reduction 48, result has 73.0 percent of original size [2021-03-11 12:16:58,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-03-11 12:16:58,853 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.7 percent of original size [2021-03-11 12:16:58,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:16:58,881 INFO L142 QuantifierPusher]: treesize reduction 48, result has 42.2 percent of original size [2021-03-11 12:16:58,882 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:16:58,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:16:58,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:16:58,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:16:58,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:16:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:16:58,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647259514] [2021-03-11 12:16:58,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:16:58,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:16:58,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585167011] [2021-03-11 12:16:58,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:16:58,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:16:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:16:58,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:16:58,931 INFO L87 Difference]: Start difference. First operand 9816 states and 32811 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:01,181 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:17:01,316 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-11 12:17:01,498 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-03-11 12:17:01,744 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2021-03-11 12:17:01,970 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-03-11 12:17:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:02,289 INFO L93 Difference]: Finished difference Result 10391 states and 34564 transitions. [2021-03-11 12:17:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:17:02,290 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:02,306 INFO L225 Difference]: With dead ends: 10391 [2021-03-11 12:17:02,307 INFO L226 Difference]: Without dead ends: 10391 [2021-03-11 12:17:02,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2527.2ms TimeCoverageRelationStatistics Valid=471, Invalid=1169, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:17:02,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10391 states. [2021-03-11 12:17:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10391 to 9838. [2021-03-11 12:17:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9838 states, 9834 states have (on average 3.343400447427293) internal successors, (32879), 9837 states have internal predecessors, (32879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9838 states to 9838 states and 32879 transitions. [2021-03-11 12:17:02,435 INFO L78 Accepts]: Start accepts. Automaton has 9838 states and 32879 transitions. Word has length 31 [2021-03-11 12:17:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:02,435 INFO L480 AbstractCegarLoop]: Abstraction has 9838 states and 32879 transitions. [2021-03-11 12:17:02,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9838 states and 32879 transitions. [2021-03-11 12:17:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:02,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:02,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:02,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 12:17:02,445 INFO L428 AbstractCegarLoop]: === Iteration 72 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1438314713, now seen corresponding path program 25 times [2021-03-11 12:17:02,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:02,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371097908] [2021-03-11 12:17:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:02,485 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:17:02,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:17:02,493 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:17:02,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:17:02,504 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:17:02,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:17:02,516 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:17:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:02,527 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:17:02,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:02,550 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:17:02,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:02,575 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-03-11 12:17:02,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:02,602 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.3 percent of original size [2021-03-11 12:17:02,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:17:02,645 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-03-11 12:17:02,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:17:02,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-03-11 12:17:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:17:02,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-03-11 12:17:02,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:17:02,733 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.5 percent of original size [2021-03-11 12:17:02,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-03-11 12:17:02,841 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.5 percent of original size [2021-03-11 12:17:02,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-03-11 12:17:02,843 INFO L142 QuantifierPusher]: treesize reduction 25, result has 56.1 percent of original size [2021-03-11 12:17:02,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:02,862 INFO L142 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-03-11 12:17:02,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:02,889 INFO L142 QuantifierPusher]: treesize reduction 34, result has 54.1 percent of original size [2021-03-11 12:17:02,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:17:02,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:17:02,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:17:02,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:02,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:02,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371097908] [2021-03-11 12:17:02,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:02,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:17:02,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115051337] [2021-03-11 12:17:02,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:17:02,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:17:02,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:17:02,945 INFO L87 Difference]: Start difference. First operand 9838 states and 32879 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:05,293 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-03-11 12:17:05,432 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2021-03-11 12:17:05,900 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2021-03-11 12:17:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:06,219 INFO L93 Difference]: Finished difference Result 10511 states and 34948 transitions. [2021-03-11 12:17:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 12:17:06,220 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:06,236 INFO L225 Difference]: With dead ends: 10511 [2021-03-11 12:17:06,236 INFO L226 Difference]: Without dead ends: 10511 [2021-03-11 12:17:06,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2287.0ms TimeCoverageRelationStatistics Valid=430, Invalid=1052, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:17:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10511 states. [2021-03-11 12:17:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10511 to 9890. [2021-03-11 12:17:06,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9890 states, 9886 states have (on average 3.3436172364960552) internal successors, (33055), 9889 states have internal predecessors, (33055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9890 states to 9890 states and 33055 transitions. [2021-03-11 12:17:06,360 INFO L78 Accepts]: Start accepts. Automaton has 9890 states and 33055 transitions. Word has length 31 [2021-03-11 12:17:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:06,360 INFO L480 AbstractCegarLoop]: Abstraction has 9890 states and 33055 transitions. [2021-03-11 12:17:06,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 9890 states and 33055 transitions. [2021-03-11 12:17:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:06,369 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:06,369 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:06,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 12:17:06,369 INFO L428 AbstractCegarLoop]: === Iteration 73 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash 917199111, now seen corresponding path program 26 times [2021-03-11 12:17:06,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:06,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709641768] [2021-03-11 12:17:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:06,463 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:17:06,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:17:06,471 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:17:06,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:17:06,482 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.9 percent of original size [2021-03-11 12:17:06,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:17:06,495 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:17:06,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:06,508 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:17:06,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:17:06,524 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:17:06,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:17:06,541 INFO L142 QuantifierPusher]: treesize reduction 21, result has 68.2 percent of original size [2021-03-11 12:17:06,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:17:06,570 INFO L142 QuantifierPusher]: treesize reduction 56, result has 47.2 percent of original size [2021-03-11 12:17:06,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:17:06,604 INFO L142 QuantifierPusher]: treesize reduction 80, result has 42.9 percent of original size [2021-03-11 12:17:06,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:17:06,614 INFO L142 QuantifierPusher]: treesize reduction 105, result has 35.6 percent of original size [2021-03-11 12:17:06,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:06,660 INFO L142 QuantifierPusher]: treesize reduction 105, result has 35.6 percent of original size [2021-03-11 12:17:06,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:06,704 INFO L142 QuantifierPusher]: treesize reduction 140, result has 54.2 percent of original size [2021-03-11 12:17:06,704 INFO L147 QuantifierPusher]: treesize reduction 79, result has 52.4 percent of original size 87 [2021-03-11 12:17:06,760 INFO L142 QuantifierPusher]: treesize reduction 138, result has 56.3 percent of original size [2021-03-11 12:17:06,761 INFO L147 QuantifierPusher]: treesize reduction 77, result has 56.7 percent of original size 101 [2021-03-11 12:17:06,835 INFO L142 QuantifierPusher]: treesize reduction 101, result has 66.0 percent of original size [2021-03-11 12:17:06,836 INFO L147 QuantifierPusher]: treesize reduction 30, result has 84.7 percent of original size 166 [2021-03-11 12:17:06,916 INFO L142 QuantifierPusher]: treesize reduction 26, result has 62.9 percent of original size [2021-03-11 12:17:06,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:06,942 INFO L142 QuantifierPusher]: treesize reduction 24, result has 60.7 percent of original size [2021-03-11 12:17:06,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:06,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:06,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:17:06,982 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:17:06,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:17:07,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:07,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:07,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:07,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:07,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709641768] [2021-03-11 12:17:07,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:07,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:07,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567048564] [2021-03-11 12:17:07,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:17:07,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:17:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:17:07,010 INFO L87 Difference]: Start difference. First operand 9890 states and 33055 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:09,491 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-11 12:17:09,662 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-03-11 12:17:09,982 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-03-11 12:17:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:10,266 INFO L93 Difference]: Finished difference Result 10448 states and 34745 transitions. [2021-03-11 12:17:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:17:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:10,281 INFO L225 Difference]: With dead ends: 10448 [2021-03-11 12:17:10,281 INFO L226 Difference]: Without dead ends: 10448 [2021-03-11 12:17:10,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2564.1ms TimeCoverageRelationStatistics Valid=520, Invalid=1286, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:17:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10448 states. [2021-03-11 12:17:10,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10448 to 9702. [2021-03-11 12:17:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9702 states, 9698 states have (on average 3.3475974427717055) internal successors, (32465), 9701 states have internal predecessors, (32465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9702 states to 9702 states and 32465 transitions. [2021-03-11 12:17:10,399 INFO L78 Accepts]: Start accepts. Automaton has 9702 states and 32465 transitions. Word has length 31 [2021-03-11 12:17:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:10,399 INFO L480 AbstractCegarLoop]: Abstraction has 9702 states and 32465 transitions. [2021-03-11 12:17:10,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9702 states and 32465 transitions. [2021-03-11 12:17:10,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:10,408 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:10,408 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:10,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 12:17:10,408 INFO L428 AbstractCegarLoop]: === Iteration 74 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2117111775, now seen corresponding path program 27 times [2021-03-11 12:17:10,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:10,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157797440] [2021-03-11 12:17:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:10,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:17:10,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:17:10,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:17:10,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:10,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:10,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:10,536 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:17:10,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:17:10,567 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-03-11 12:17:10,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:17:10,603 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-03-11 12:17:10,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:17:10,605 INFO L142 QuantifierPusher]: treesize reduction 42, result has 52.8 percent of original size [2021-03-11 12:17:10,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:17:10,642 INFO L142 QuantifierPusher]: treesize reduction 42, result has 52.8 percent of original size [2021-03-11 12:17:10,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:17:10,676 INFO L142 QuantifierPusher]: treesize reduction 59, result has 48.2 percent of original size [2021-03-11 12:17:10,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:17:10,727 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-03-11 12:17:10,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:17:10,747 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.0 percent of original size [2021-03-11 12:17:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:10,769 INFO L142 QuantifierPusher]: treesize reduction 33, result has 48.4 percent of original size [2021-03-11 12:17:10,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:10,794 INFO L142 QuantifierPusher]: treesize reduction 19, result has 61.2 percent of original size [2021-03-11 12:17:10,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:17:10,818 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:17:10,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:10,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:17:10,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:17:10,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:10,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:10,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157797440] [2021-03-11 12:17:10,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:10,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:10,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073795253] [2021-03-11 12:17:10,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:17:10,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:10,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:17:10,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:17:10,864 INFO L87 Difference]: Start difference. First operand 9702 states and 32465 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:12,944 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-03-11 12:17:13,281 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-03-11 12:17:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:13,589 INFO L93 Difference]: Finished difference Result 10205 states and 33988 transitions. [2021-03-11 12:17:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:17:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:13,606 INFO L225 Difference]: With dead ends: 10205 [2021-03-11 12:17:13,606 INFO L226 Difference]: Without dead ends: 10205 [2021-03-11 12:17:13,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1879.2ms TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:17:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10205 states. [2021-03-11 12:17:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10205 to 9717. [2021-03-11 12:17:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9717 states, 9713 states have (on average 3.34747245959024) internal successors, (32514), 9716 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9717 states to 9717 states and 32514 transitions. [2021-03-11 12:17:13,761 INFO L78 Accepts]: Start accepts. Automaton has 9717 states and 32514 transitions. Word has length 31 [2021-03-11 12:17:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:13,762 INFO L480 AbstractCegarLoop]: Abstraction has 9717 states and 32514 transitions. [2021-03-11 12:17:13,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9717 states and 32514 transitions. [2021-03-11 12:17:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:13,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:13,771 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:13,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 12:17:13,771 INFO L428 AbstractCegarLoop]: === Iteration 75 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:13,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1446991255, now seen corresponding path program 28 times [2021-03-11 12:17:13,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:13,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382716140] [2021-03-11 12:17:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:13,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:17:13,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:17:13,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:17:13,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:13,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:17:13,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:13,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:17:13,944 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.3 percent of original size [2021-03-11 12:17:13,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:17:13,975 INFO L142 QuantifierPusher]: treesize reduction 358, result has 24.6 percent of original size [2021-03-11 12:17:13,976 INFO L147 QuantifierPusher]: treesize reduction 22, result has 81.2 percent of original size 95 [2021-03-11 12:17:14,015 INFO L142 QuantifierPusher]: treesize reduction 45, result has 49.4 percent of original size [2021-03-11 12:17:14,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:14,025 INFO L142 QuantifierPusher]: treesize reduction 73, result has 43.0 percent of original size [2021-03-11 12:17:14,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:17:14,060 INFO L142 QuantifierPusher]: treesize reduction 73, result has 43.0 percent of original size [2021-03-11 12:17:14,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:17:14,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:14,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:14,120 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:17:14,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:14,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.9 percent of original size [2021-03-11 12:17:14,148 INFO L147 QuantifierPusher]: treesize reduction 5, result has 91.2 percent of original size 52 [2021-03-11 12:17:14,181 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-03-11 12:17:14,181 INFO L147 QuantifierPusher]: treesize reduction 5, result has 91.7 percent of original size 55 [2021-03-11 12:17:14,218 INFO L142 QuantifierPusher]: treesize reduction 27, result has 67.9 percent of original size [2021-03-11 12:17:14,219 INFO L147 QuantifierPusher]: treesize reduction 5, result has 91.2 percent of original size 52 [2021-03-11 12:17:14,254 INFO L142 QuantifierPusher]: treesize reduction 47, result has 56.5 percent of original size [2021-03-11 12:17:14,255 INFO L147 QuantifierPusher]: treesize reduction 12, result has 80.3 percent of original size 49 [2021-03-11 12:17:14,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:17:14,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:17:14,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:14,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:14,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382716140] [2021-03-11 12:17:14,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:14,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:14,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771405677] [2021-03-11 12:17:14,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:17:14,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:17:14,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:17:14,315 INFO L87 Difference]: Start difference. First operand 9717 states and 32514 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:17,550 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-03-11 12:17:18,330 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-03-11 12:17:18,472 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2021-03-11 12:17:18,940 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-03-11 12:17:19,097 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-03-11 12:17:19,362 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-03-11 12:17:19,608 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2021-03-11 12:17:19,765 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-03-11 12:17:20,019 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2021-03-11 12:17:20,177 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2021-03-11 12:17:20,503 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2021-03-11 12:17:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:20,714 INFO L93 Difference]: Finished difference Result 10845 states and 35932 transitions. [2021-03-11 12:17:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-03-11 12:17:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:20,731 INFO L225 Difference]: With dead ends: 10845 [2021-03-11 12:17:20,732 INFO L226 Difference]: Without dead ends: 10845 [2021-03-11 12:17:20,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 4804.3ms TimeCoverageRelationStatistics Valid=1233, Invalid=3189, Unknown=0, NotChecked=0, Total=4422 [2021-03-11 12:17:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10845 states. [2021-03-11 12:17:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10845 to 9884. [2021-03-11 12:17:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9884 states, 9880 states have (on average 3.343421052631579) internal successors, (33033), 9883 states have internal predecessors, (33033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9884 states to 9884 states and 33033 transitions. [2021-03-11 12:17:20,856 INFO L78 Accepts]: Start accepts. Automaton has 9884 states and 33033 transitions. Word has length 31 [2021-03-11 12:17:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:20,856 INFO L480 AbstractCegarLoop]: Abstraction has 9884 states and 33033 transitions. [2021-03-11 12:17:20,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9884 states and 33033 transitions. [2021-03-11 12:17:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:20,865 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:20,865 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:20,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 12:17:20,866 INFO L428 AbstractCegarLoop]: === Iteration 76 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1365592199, now seen corresponding path program 29 times [2021-03-11 12:17:20,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:20,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487583472] [2021-03-11 12:17:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:20,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:20,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:17:20,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:20,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:17:20,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:20,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:17:20,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:20,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:21,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:21,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:17:21,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:17:21,068 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-03-11 12:17:21,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:21,100 INFO L142 QuantifierPusher]: treesize reduction 48, result has 57.1 percent of original size [2021-03-11 12:17:21,101 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-03-11 12:17:21,141 INFO L142 QuantifierPusher]: treesize reduction 48, result has 57.1 percent of original size [2021-03-11 12:17:21,142 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-03-11 12:17:21,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:21,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:21,197 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.1 percent of original size [2021-03-11 12:17:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:21,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-03-11 12:17:21,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:21,236 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 12:17:21,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:21,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-03-11 12:17:21,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:17:21,280 INFO L142 QuantifierPusher]: treesize reduction 47, result has 40.5 percent of original size [2021-03-11 12:17:21,280 INFO L147 QuantifierPusher]: treesize reduction 7, result has 78.1 percent of original size 25 [2021-03-11 12:17:21,311 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-03-11 12:17:21,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:17:21,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:21,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487583472] [2021-03-11 12:17:21,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:21,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:17:21,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154899499] [2021-03-11 12:17:21,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:17:21,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:21,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:17:21,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:17:21,326 INFO L87 Difference]: Start difference. First operand 9884 states and 33033 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:24,708 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-03-11 12:17:25,189 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-03-11 12:17:25,915 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-11 12:17:26,058 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-03-11 12:17:26,397 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-11 12:17:26,668 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-03-11 12:17:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:26,860 INFO L93 Difference]: Finished difference Result 10840 states and 35915 transitions. [2021-03-11 12:17:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 12:17:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:26,875 INFO L225 Difference]: With dead ends: 10840 [2021-03-11 12:17:26,876 INFO L226 Difference]: Without dead ends: 10840 [2021-03-11 12:17:26,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4121.2ms TimeCoverageRelationStatistics Valid=1116, Invalid=2790, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 12:17:26,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2021-03-11 12:17:26,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 10138. [2021-03-11 12:17:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 10134 states have (on average 3.337181764357608) internal successors, (33819), 10137 states have internal predecessors, (33819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 33819 transitions. [2021-03-11 12:17:26,995 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 33819 transitions. Word has length 31 [2021-03-11 12:17:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:26,995 INFO L480 AbstractCegarLoop]: Abstraction has 10138 states and 33819 transitions. [2021-03-11 12:17:26,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 33819 transitions. [2021-03-11 12:17:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:27,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:27,004 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:27,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 12:17:27,004 INFO L428 AbstractCegarLoop]: === Iteration 77 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:27,004 INFO L82 PathProgramCache]: Analyzing trace with hash 727976641, now seen corresponding path program 30 times [2021-03-11 12:17:27,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:27,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059392765] [2021-03-11 12:17:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:27,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 12:17:27,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:17:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:17:27,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:27,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:17:27,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:17:27,179 INFO L142 QuantifierPusher]: treesize reduction 15, result has 79.5 percent of original size [2021-03-11 12:17:27,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:27,212 INFO L142 QuantifierPusher]: treesize reduction 358, result has 25.7 percent of original size [2021-03-11 12:17:27,213 INFO L147 QuantifierPusher]: treesize reduction 22, result has 82.3 percent of original size 102 [2021-03-11 12:17:27,256 INFO L142 QuantifierPusher]: treesize reduction 45, result has 53.1 percent of original size [2021-03-11 12:17:27,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:17:27,266 INFO L142 QuantifierPusher]: treesize reduction 59, result has 55.6 percent of original size [2021-03-11 12:17:27,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:17:27,310 INFO L142 QuantifierPusher]: treesize reduction 59, result has 55.6 percent of original size [2021-03-11 12:17:27,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:17:27,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:27,377 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-03-11 12:17:27,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:17:27,405 INFO L142 QuantifierPusher]: treesize reduction 177, result has 31.1 percent of original size [2021-03-11 12:17:27,405 INFO L147 QuantifierPusher]: treesize reduction 12, result has 85.0 percent of original size 68 [2021-03-11 12:17:27,440 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.9 percent of original size [2021-03-11 12:17:27,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:17:27,479 INFO L142 QuantifierPusher]: treesize reduction 51, result has 52.3 percent of original size [2021-03-11 12:17:27,479 INFO L147 QuantifierPusher]: treesize reduction 12, result has 78.6 percent of original size 44 [2021-03-11 12:17:27,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:17:27,540 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:17:27,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:17:27,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:27,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:27,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:27,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059392765] [2021-03-11 12:17:27,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:27,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:27,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629696997] [2021-03-11 12:17:27,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:17:27,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:17:27,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:17:27,567 INFO L87 Difference]: Start difference. First operand 10138 states and 33819 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:30,218 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 61 [2021-03-11 12:17:30,696 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2021-03-11 12:17:31,416 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2021-03-11 12:17:33,511 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 59 [2021-03-11 12:17:33,650 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 56 [2021-03-11 12:17:34,164 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-03-11 12:17:34,322 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-03-11 12:17:34,677 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-03-11 12:17:34,831 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-03-11 12:17:35,070 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-03-11 12:17:35,246 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-03-11 12:17:35,554 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-03-11 12:17:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:35,758 INFO L93 Difference]: Finished difference Result 10850 states and 35857 transitions. [2021-03-11 12:17:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-03-11 12:17:35,759 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:35,774 INFO L225 Difference]: With dead ends: 10850 [2021-03-11 12:17:35,775 INFO L226 Difference]: Without dead ends: 10850 [2021-03-11 12:17:35,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 6114.6ms TimeCoverageRelationStatistics Valid=1580, Invalid=4582, Unknown=0, NotChecked=0, Total=6162 [2021-03-11 12:17:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10850 states. [2021-03-11 12:17:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10850 to 9657. [2021-03-11 12:17:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9657 states, 9653 states have (on average 3.3437273386511963) internal successors, (32277), 9656 states have internal predecessors, (32277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:35,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9657 states to 9657 states and 32277 transitions. [2021-03-11 12:17:35,894 INFO L78 Accepts]: Start accepts. Automaton has 9657 states and 32277 transitions. Word has length 31 [2021-03-11 12:17:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:35,894 INFO L480 AbstractCegarLoop]: Abstraction has 9657 states and 32277 transitions. [2021-03-11 12:17:35,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:35,894 INFO L276 IsEmpty]: Start isEmpty. Operand 9657 states and 32277 transitions. [2021-03-11 12:17:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:35,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:35,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:35,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 12:17:35,903 INFO L428 AbstractCegarLoop]: === Iteration 78 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1718197620, now seen corresponding path program 1 times [2021-03-11 12:17:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181195436] [2021-03-11 12:17:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:35,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:35,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:17:35,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:35,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:17:35,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:35,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:17:36,023 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:17:36,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:17:36,052 INFO L142 QuantifierPusher]: treesize reduction 11, result has 80.4 percent of original size [2021-03-11 12:17:36,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:17:36,080 INFO L142 QuantifierPusher]: treesize reduction 11, result has 81.4 percent of original size [2021-03-11 12:17:36,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:17:36,113 INFO L142 QuantifierPusher]: treesize reduction 44, result has 64.5 percent of original size [2021-03-11 12:17:36,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:17:36,170 INFO L142 QuantifierPusher]: treesize reduction 358, result has 24.3 percent of original size [2021-03-11 12:17:36,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:17:36,235 INFO L142 QuantifierPusher]: treesize reduction 84, result has 46.2 percent of original size [2021-03-11 12:17:36,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:17:36,250 INFO L142 QuantifierPusher]: treesize reduction 93, result has 59.2 percent of original size [2021-03-11 12:17:36,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:17:36,324 INFO L142 QuantifierPusher]: treesize reduction 103, result has 58.5 percent of original size [2021-03-11 12:17:36,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-03-11 12:17:36,405 INFO L142 QuantifierPusher]: treesize reduction 57, result has 52.1 percent of original size [2021-03-11 12:17:36,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:17:36,453 INFO L142 QuantifierPusher]: treesize reduction 62, result has 81.9 percent of original size [2021-03-11 12:17:36,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-03-11 12:17:36,495 INFO L142 QuantifierPusher]: treesize reduction 12, result has 74.5 percent of original size [2021-03-11 12:17:36,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:17:36,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:36,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:36,542 INFO L142 QuantifierPusher]: treesize reduction 11, result has 82.3 percent of original size [2021-03-11 12:17:36,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:17:36,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-11 12:17:36,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:17:36,608 INFO L142 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size [2021-03-11 12:17:36,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:17:36,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 77.5 percent of original size [2021-03-11 12:17:36,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:36,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-03-11 12:17:36,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:17:36,725 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-03-11 12:17:36,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:17:36,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:36,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:36,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181195436] [2021-03-11 12:17:36,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:36,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-03-11 12:17:36,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570307898] [2021-03-11 12:17:36,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-11 12:17:36,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:36,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-11 12:17:36,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-03-11 12:17:36,796 INFO L87 Difference]: Start difference. First operand 9657 states and 32277 transitions. Second operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:37,282 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-03-11 12:17:37,461 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2021-03-11 12:17:37,765 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2021-03-11 12:17:38,492 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2021-03-11 12:17:38,650 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-11 12:17:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:40,162 INFO L93 Difference]: Finished difference Result 10555 states and 35171 transitions. [2021-03-11 12:17:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:17:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:40,177 INFO L225 Difference]: With dead ends: 10555 [2021-03-11 12:17:40,178 INFO L226 Difference]: Without dead ends: 10555 [2021-03-11 12:17:40,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1905.6ms TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:17:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10555 states. [2021-03-11 12:17:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10555 to 10423. [2021-03-11 12:17:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10423 states, 10419 states have (on average 3.3437949899222574) internal successors, (34839), 10422 states have internal predecessors, (34839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10423 states to 10423 states and 34839 transitions. [2021-03-11 12:17:40,304 INFO L78 Accepts]: Start accepts. Automaton has 10423 states and 34839 transitions. Word has length 31 [2021-03-11 12:17:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:40,304 INFO L480 AbstractCegarLoop]: Abstraction has 10423 states and 34839 transitions. [2021-03-11 12:17:40,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:40,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10423 states and 34839 transitions. [2021-03-11 12:17:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:40,314 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:40,314 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:40,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 12:17:40,314 INFO L428 AbstractCegarLoop]: === Iteration 79 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:40,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:40,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1017097260, now seen corresponding path program 2 times [2021-03-11 12:17:40,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:40,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489108786] [2021-03-11 12:17:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:40,350 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.8 percent of original size [2021-03-11 12:17:40,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:17:40,361 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.1 percent of original size [2021-03-11 12:17:40,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:17:40,376 INFO L142 QuantifierPusher]: treesize reduction 12, result has 83.8 percent of original size [2021-03-11 12:17:40,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:17:40,398 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:17:40,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:40,416 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:17:40,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:40,435 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-03-11 12:17:40,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:17:40,458 INFO L142 QuantifierPusher]: treesize reduction 36, result has 66.0 percent of original size [2021-03-11 12:17:40,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:17:40,516 INFO L142 QuantifierPusher]: treesize reduction 36, result has 69.5 percent of original size [2021-03-11 12:17:40,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:17:40,582 INFO L142 QuantifierPusher]: treesize reduction 51, result has 61.4 percent of original size [2021-03-11 12:17:40,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-11 12:17:40,598 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-03-11 12:17:40,598 INFO L147 QuantifierPusher]: treesize reduction 7, result has 92.6 percent of original size 88 [2021-03-11 12:17:40,668 INFO L142 QuantifierPusher]: treesize reduction 55, result has 47.1 percent of original size [2021-03-11 12:17:40,668 INFO L147 QuantifierPusher]: treesize reduction 4, result has 91.8 percent of original size 45 [2021-03-11 12:17:40,714 INFO L142 QuantifierPusher]: treesize reduction 61, result has 57.0 percent of original size [2021-03-11 12:17:40,714 INFO L147 QuantifierPusher]: treesize reduction 4, result has 95.1 percent of original size 77 [2021-03-11 12:17:40,778 INFO L142 QuantifierPusher]: treesize reduction 65, result has 78.0 percent of original size [2021-03-11 12:17:40,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-03-11 12:17:40,821 INFO L142 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size [2021-03-11 12:17:40,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:17:40,845 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-03-11 12:17:40,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:40,869 INFO L142 QuantifierPusher]: treesize reduction 14, result has 78.5 percent of original size [2021-03-11 12:17:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:17:40,910 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-11 12:17:40,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 12:17:40,934 INFO L142 QuantifierPusher]: treesize reduction 16, result has 86.1 percent of original size [2021-03-11 12:17:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:17:40,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 77.5 percent of original size [2021-03-11 12:17:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:41,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-03-11 12:17:41,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:17:41,053 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-03-11 12:17:41,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:17:41,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:41,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:41,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489108786] [2021-03-11 12:17:41,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:41,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-03-11 12:17:41,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925295449] [2021-03-11 12:17:41,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-11 12:17:41,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-11 12:17:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2021-03-11 12:17:41,126 INFO L87 Difference]: Start difference. First operand 10423 states and 34839 transitions. Second operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:41,818 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-03-11 12:17:42,149 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-11 12:17:43,182 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-03-11 12:17:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:45,093 INFO L93 Difference]: Finished difference Result 12068 states and 40248 transitions. [2021-03-11 12:17:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:17:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:45,112 INFO L225 Difference]: With dead ends: 12068 [2021-03-11 12:17:45,112 INFO L226 Difference]: Without dead ends: 12068 [2021-03-11 12:17:45,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1810.6ms TimeCoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:17:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12068 states. [2021-03-11 12:17:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12068 to 10443. [2021-03-11 12:17:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10443 states, 10439 states have (on average 3.3412204234122043) internal successors, (34879), 10442 states have internal predecessors, (34879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10443 states to 10443 states and 34879 transitions. [2021-03-11 12:17:45,254 INFO L78 Accepts]: Start accepts. Automaton has 10443 states and 34879 transitions. Word has length 31 [2021-03-11 12:17:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:45,254 INFO L480 AbstractCegarLoop]: Abstraction has 10443 states and 34879 transitions. [2021-03-11 12:17:45,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 10443 states and 34879 transitions. [2021-03-11 12:17:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:45,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:45,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:45,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 12:17:45,263 INFO L428 AbstractCegarLoop]: === Iteration 80 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash -460393168, now seen corresponding path program 3 times [2021-03-11 12:17:45,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:45,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281008694] [2021-03-11 12:17:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:45,301 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size [2021-03-11 12:17:45,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:17:45,322 INFO L142 QuantifierPusher]: treesize reduction 11, result has 86.7 percent of original size [2021-03-11 12:17:45,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:17:45,354 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size [2021-03-11 12:17:45,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-03-11 12:17:45,393 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.9 percent of original size [2021-03-11 12:17:45,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:17:45,425 INFO L142 QuantifierPusher]: treesize reduction 14, result has 77.4 percent of original size [2021-03-11 12:17:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:17:45,455 INFO L142 QuantifierPusher]: treesize reduction 14, result has 78.5 percent of original size [2021-03-11 12:17:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:17:45,489 INFO L142 QuantifierPusher]: treesize reduction 48, result has 62.5 percent of original size [2021-03-11 12:17:45,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:17:45,547 INFO L142 QuantifierPusher]: treesize reduction 367, result has 23.4 percent of original size [2021-03-11 12:17:45,547 INFO L147 QuantifierPusher]: treesize reduction 6, result has 94.6 percent of original size 106 [2021-03-11 12:17:45,614 INFO L142 QuantifierPusher]: treesize reduction 70, result has 53.9 percent of original size [2021-03-11 12:17:45,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:17:45,629 INFO L142 QuantifierPusher]: treesize reduction 102, result has 55.7 percent of original size [2021-03-11 12:17:45,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-03-11 12:17:45,721 INFO L142 QuantifierPusher]: treesize reduction 52, result has 51.4 percent of original size [2021-03-11 12:17:45,721 INFO L147 QuantifierPusher]: treesize reduction 4, result has 92.7 percent of original size 51 [2021-03-11 12:17:45,766 INFO L142 QuantifierPusher]: treesize reduction 59, result has 82.1 percent of original size [2021-03-11 12:17:45,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 271 [2021-03-11 12:17:45,807 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-03-11 12:17:45,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:45,828 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.0 percent of original size [2021-03-11 12:17:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:45,851 INFO L142 QuantifierPusher]: treesize reduction 11, result has 82.5 percent of original size [2021-03-11 12:17:45,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:17:45,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-11 12:17:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:17:45,915 INFO L142 QuantifierPusher]: treesize reduction 21, result has 82.1 percent of original size [2021-03-11 12:17:45,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:17:45,973 INFO L142 QuantifierPusher]: treesize reduction 12, result has 75.5 percent of original size [2021-03-11 12:17:45,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:17:46,022 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-03-11 12:17:46,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 12:17:46,053 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.5 percent of original size [2021-03-11 12:17:46,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:17:46,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:46,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:46,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281008694] [2021-03-11 12:17:46,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:46,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:17:46,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386994883] [2021-03-11 12:17:46,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:17:46,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:17:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:17:46,124 INFO L87 Difference]: Start difference. First operand 10443 states and 34879 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:46,664 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-11 12:17:46,860 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 63 [2021-03-11 12:17:47,180 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-03-11 12:17:47,471 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-03-11 12:17:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:49,681 INFO L93 Difference]: Finished difference Result 12173 states and 39957 transitions. [2021-03-11 12:17:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:17:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:49,700 INFO L225 Difference]: With dead ends: 12173 [2021-03-11 12:17:49,701 INFO L226 Difference]: Without dead ends: 12173 [2021-03-11 12:17:49,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1943.1ms TimeCoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2021-03-11 12:17:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12173 states. [2021-03-11 12:17:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12173 to 10679. [2021-03-11 12:17:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10679 states, 10675 states have (on average 3.3394847775175642) internal successors, (35649), 10678 states have internal predecessors, (35649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10679 states to 10679 states and 35649 transitions. [2021-03-11 12:17:49,839 INFO L78 Accepts]: Start accepts. Automaton has 10679 states and 35649 transitions. Word has length 31 [2021-03-11 12:17:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:49,840 INFO L480 AbstractCegarLoop]: Abstraction has 10679 states and 35649 transitions. [2021-03-11 12:17:49,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:49,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10679 states and 35649 transitions. [2021-03-11 12:17:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:49,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:49,849 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:49,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 12:17:49,849 INFO L428 AbstractCegarLoop]: === Iteration 81 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:49,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1160071774, now seen corresponding path program 1 times [2021-03-11 12:17:49,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:49,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378214154] [2021-03-11 12:17:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:49,878 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.2 percent of original size [2021-03-11 12:17:49,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:17:49,889 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.8 percent of original size [2021-03-11 12:17:49,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:17:49,904 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-03-11 12:17:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:49,922 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:17:49,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:49,940 INFO L142 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-03-11 12:17:49,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:17:49,959 INFO L142 QuantifierPusher]: treesize reduction 28, result has 68.5 percent of original size [2021-03-11 12:17:49,960 INFO L147 QuantifierPusher]: treesize reduction 5, result has 91.8 percent of original size 56 [2021-03-11 12:17:50,002 INFO L142 QuantifierPusher]: treesize reduction 40, result has 61.5 percent of original size [2021-03-11 12:17:50,002 INFO L147 QuantifierPusher]: treesize reduction 5, result has 92.2 percent of original size 59 [2021-03-11 12:17:50,051 INFO L142 QuantifierPusher]: treesize reduction 31, result has 71.0 percent of original size [2021-03-11 12:17:50,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-11 12:17:50,062 INFO L142 QuantifierPusher]: treesize reduction 83, result has 58.3 percent of original size [2021-03-11 12:17:50,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:17:50,120 INFO L142 QuantifierPusher]: treesize reduction 50, result has 52.8 percent of original size [2021-03-11 12:17:50,121 INFO L147 QuantifierPusher]: treesize reduction 5, result has 91.1 percent of original size 51 [2021-03-11 12:17:50,165 INFO L142 QuantifierPusher]: treesize reduction 53, result has 83.9 percent of original size [2021-03-11 12:17:50,166 INFO L147 QuantifierPusher]: treesize reduction 5, result has 98.2 percent of original size 271 [2021-03-11 12:17:50,194 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-03-11 12:17:50,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:50,214 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-03-11 12:17:50,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:17:50,236 INFO L142 QuantifierPusher]: treesize reduction 13, result has 80.0 percent of original size [2021-03-11 12:17:50,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:17:50,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-11 12:17:50,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:17:50,297 INFO L142 QuantifierPusher]: treesize reduction 18, result has 50.0 percent of original size [2021-03-11 12:17:50,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:17:50,323 INFO L142 QuantifierPusher]: treesize reduction 60, result has 34.1 percent of original size [2021-03-11 12:17:50,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:17:50,365 INFO L142 QuantifierPusher]: treesize reduction 67, result has 34.3 percent of original size [2021-03-11 12:17:50,365 INFO L147 QuantifierPusher]: treesize reduction 13, result has 62.9 percent of original size 22 [2021-03-11 12:17:50,397 INFO L142 QuantifierPusher]: treesize reduction 44, result has 50.6 percent of original size [2021-03-11 12:17:50,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:17:50,437 INFO L142 QuantifierPusher]: treesize reduction 25, result has 51.9 percent of original size [2021-03-11 12:17:50,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:50,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378214154] [2021-03-11 12:17:50,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:50,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:50,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783389022] [2021-03-11 12:17:50,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-03-11 12:17:50,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:50,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-03-11 12:17:50,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-03-11 12:17:50,470 INFO L87 Difference]: Start difference. First operand 10679 states and 35649 transitions. Second operand has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:51,241 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-11 12:17:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:53,429 INFO L93 Difference]: Finished difference Result 12233 states and 40613 transitions. [2021-03-11 12:17:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:17:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:53,448 INFO L225 Difference]: With dead ends: 12233 [2021-03-11 12:17:53,448 INFO L226 Difference]: Without dead ends: 12233 [2021-03-11 12:17:53,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1282.8ms TimeCoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:17:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12233 states. [2021-03-11 12:17:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12233 to 11817. [2021-03-11 12:17:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11813 states have (on average 3.332768983323457) internal successors, (39370), 11816 states have internal predecessors, (39370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 39370 transitions. [2021-03-11 12:17:53,602 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 39370 transitions. Word has length 31 [2021-03-11 12:17:53,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:53,602 INFO L480 AbstractCegarLoop]: Abstraction has 11817 states and 39370 transitions. [2021-03-11 12:17:53,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:53,602 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 39370 transitions. [2021-03-11 12:17:53,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:53,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:53,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:53,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 12:17:53,613 INFO L428 AbstractCegarLoop]: === Iteration 82 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:53,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:53,613 INFO L82 PathProgramCache]: Analyzing trace with hash -915024879, now seen corresponding path program 31 times [2021-03-11 12:17:53,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:53,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350731936] [2021-03-11 12:17:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:53,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:17:53,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:17:53,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:17:53,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:53,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:53,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:53,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:53,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:53,810 INFO L142 QuantifierPusher]: treesize reduction 15, result has 79.5 percent of original size [2021-03-11 12:17:53,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:17:53,842 INFO L142 QuantifierPusher]: treesize reduction 100, result has 47.9 percent of original size [2021-03-11 12:17:53,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-03-11 12:17:53,880 INFO L142 QuantifierPusher]: treesize reduction 108, result has 54.0 percent of original size [2021-03-11 12:17:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:17:53,931 INFO L142 QuantifierPusher]: treesize reduction 119, result has 46.2 percent of original size [2021-03-11 12:17:53,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-03-11 12:17:53,945 INFO L142 QuantifierPusher]: treesize reduction 138, result has 45.9 percent of original size [2021-03-11 12:17:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-11 12:17:54,001 INFO L142 QuantifierPusher]: treesize reduction 249, result has 60.2 percent of original size [2021-03-11 12:17:54,002 INFO L147 QuantifierPusher]: treesize reduction 48, result has 87.3 percent of original size 329 [2021-03-11 12:17:54,103 INFO L142 QuantifierPusher]: treesize reduction 107, result has 55.2 percent of original size [2021-03-11 12:17:54,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-03-11 12:17:54,173 INFO L142 QuantifierPusher]: treesize reduction 123, result has 53.9 percent of original size [2021-03-11 12:17:54,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-03-11 12:17:54,249 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-03-11 12:17:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:17:54,274 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:17:54,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:17:54,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:17:54,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:17:54,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:54,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350731936] [2021-03-11 12:17:54,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:54,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:17:54,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107563623] [2021-03-11 12:17:54,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:17:54,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:17:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:17:54,320 INFO L87 Difference]: Start difference. First operand 11817 states and 39370 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:55,185 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-03-11 12:17:55,941 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2021-03-11 12:17:56,253 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-03-11 12:17:57,012 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:17:57,197 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2021-03-11 12:17:57,480 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2021-03-11 12:17:57,610 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-03-11 12:17:57,762 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2021-03-11 12:17:57,925 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-03-11 12:17:58,097 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-03-11 12:17:58,262 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-03-11 12:17:58,532 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2021-03-11 12:17:58,699 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2021-03-11 12:17:58,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:17:58,889 INFO L93 Difference]: Finished difference Result 12920 states and 42681 transitions. [2021-03-11 12:17:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:17:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:17:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:17:58,909 INFO L225 Difference]: With dead ends: 12920 [2021-03-11 12:17:58,909 INFO L226 Difference]: Without dead ends: 12920 [2021-03-11 12:17:58,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 3574.3ms TimeCoverageRelationStatistics Valid=631, Invalid=1439, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:17:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12920 states. [2021-03-11 12:17:59,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12920 to 12021. [2021-03-11 12:17:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 12017 states have (on average 3.3271199134559373) internal successors, (39982), 12020 states have internal predecessors, (39982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 39982 transitions. [2021-03-11 12:17:59,081 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 39982 transitions. Word has length 31 [2021-03-11 12:17:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:17:59,081 INFO L480 AbstractCegarLoop]: Abstraction has 12021 states and 39982 transitions. [2021-03-11 12:17:59,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:17:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 39982 transitions. [2021-03-11 12:17:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:17:59,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:17:59,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:17:59,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 12:17:59,092 INFO L428 AbstractCegarLoop]: === Iteration 83 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:17:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:17:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash -903131959, now seen corresponding path program 32 times [2021-03-11 12:17:59,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:17:59,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899959434] [2021-03-11 12:17:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:17:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:17:59,122 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:17:59,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:17:59,136 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:17:59,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:17:59,156 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:17:59,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:17:59,176 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:17:59,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:59,201 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:17:59,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:59,227 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:17:59,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:59,253 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:17:59,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:59,281 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:17:59,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:17:59,310 INFO L142 QuantifierPusher]: treesize reduction 45, result has 71.2 percent of original size [2021-03-11 12:17:59,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:17:59,359 INFO L142 QuantifierPusher]: treesize reduction 67, result has 69.3 percent of original size [2021-03-11 12:17:59,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-03-11 12:17:59,433 INFO L142 QuantifierPusher]: treesize reduction 411, result has 33.6 percent of original size [2021-03-11 12:17:59,433 INFO L147 QuantifierPusher]: treesize reduction 22, result has 89.4 percent of original size 186 [2021-03-11 12:17:59,516 INFO L142 QuantifierPusher]: treesize reduction 67, result has 71.1 percent of original size [2021-03-11 12:17:59,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-03-11 12:17:59,601 INFO L142 QuantifierPusher]: treesize reduction 108, result has 58.1 percent of original size [2021-03-11 12:17:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-03-11 12:17:59,684 INFO L142 QuantifierPusher]: treesize reduction 19, result has 77.1 percent of original size [2021-03-11 12:17:59,684 INFO L147 QuantifierPusher]: treesize reduction 6, result has 90.6 percent of original size 58 [2021-03-11 12:17:59,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:59,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:17:59,745 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:17:59,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:17:59,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:59,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:59,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:17:59,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:17:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:17:59,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899959434] [2021-03-11 12:17:59,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:17:59,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:17:59,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755361685] [2021-03-11 12:17:59,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:17:59,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:17:59,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:17:59,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:17:59,771 INFO L87 Difference]: Start difference. First operand 12021 states and 39982 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:01,275 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2021-03-11 12:18:01,615 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:18:02,316 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-11 12:18:02,561 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:18:02,729 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-11 12:18:02,945 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:18:03,164 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 75 [2021-03-11 12:18:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:03,265 INFO L93 Difference]: Finished difference Result 13611 states and 44782 transitions. [2021-03-11 12:18:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:18:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:03,285 INFO L225 Difference]: With dead ends: 13611 [2021-03-11 12:18:03,285 INFO L226 Difference]: Without dead ends: 13611 [2021-03-11 12:18:03,285 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2707.8ms TimeCoverageRelationStatistics Valid=531, Invalid=1191, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:18:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2021-03-11 12:18:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 12007. [2021-03-11 12:18:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12007 states, 12003 states have (on average 3.3275014579688413) internal successors, (39940), 12006 states have internal predecessors, (39940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12007 states to 12007 states and 39940 transitions. [2021-03-11 12:18:03,434 INFO L78 Accepts]: Start accepts. Automaton has 12007 states and 39940 transitions. Word has length 31 [2021-03-11 12:18:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:03,435 INFO L480 AbstractCegarLoop]: Abstraction has 12007 states and 39940 transitions. [2021-03-11 12:18:03,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 12007 states and 39940 transitions. [2021-03-11 12:18:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:03,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:03,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:03,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 12:18:03,445 INFO L428 AbstractCegarLoop]: === Iteration 84 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 30302609, now seen corresponding path program 33 times [2021-03-11 12:18:03,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:03,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658943796] [2021-03-11 12:18:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:03,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:03,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:03,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:03,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:03,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:03,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:03,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:03,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:03,606 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:18:03,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:03,649 INFO L142 QuantifierPusher]: treesize reduction 47, result has 66.4 percent of original size [2021-03-11 12:18:03,649 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.2 percent of original size 83 [2021-03-11 12:18:03,696 INFO L142 QuantifierPusher]: treesize reduction 56, result has 69.4 percent of original size [2021-03-11 12:18:03,697 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.7 percent of original size 119 [2021-03-11 12:18:03,744 INFO L142 QuantifierPusher]: treesize reduction 90, result has 47.4 percent of original size [2021-03-11 12:18:03,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-03-11 12:18:03,787 INFO L142 QuantifierPusher]: treesize reduction 106, result has 47.5 percent of original size [2021-03-11 12:18:03,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:18:03,839 INFO L142 QuantifierPusher]: treesize reduction 55, result has 73.3 percent of original size [2021-03-11 12:18:03,840 INFO L147 QuantifierPusher]: treesize reduction 35, result has 76.8 percent of original size 116 [2021-03-11 12:18:03,909 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.7 percent of original size [2021-03-11 12:18:03,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:18:03,929 INFO L142 QuantifierPusher]: treesize reduction 108, result has 51.4 percent of original size [2021-03-11 12:18:03,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:18:03,990 INFO L142 QuantifierPusher]: treesize reduction 106, result has 55.3 percent of original size [2021-03-11 12:18:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:18:04,056 INFO L142 QuantifierPusher]: treesize reduction 42, result has 51.7 percent of original size [2021-03-11 12:18:04,056 INFO L147 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size 40 [2021-03-11 12:18:04,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:04,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:04,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:04,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658943796] [2021-03-11 12:18:04,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:04,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:04,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570951456] [2021-03-11 12:18:04,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:04,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:04,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:04,121 INFO L87 Difference]: Start difference. First operand 12007 states and 39940 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:05,759 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-03-11 12:18:06,688 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-11 12:18:06,863 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-03-11 12:18:07,100 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-03-11 12:18:07,235 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-03-11 12:18:07,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:07,454 INFO L93 Difference]: Finished difference Result 12884 states and 42573 transitions. [2021-03-11 12:18:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:18:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:07,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:07,474 INFO L225 Difference]: With dead ends: 12884 [2021-03-11 12:18:07,474 INFO L226 Difference]: Without dead ends: 12884 [2021-03-11 12:18:07,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2435.0ms TimeCoverageRelationStatistics Valid=399, Invalid=1007, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 12:18:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2021-03-11 12:18:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 12054. [2021-03-11 12:18:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 12050 states have (on average 3.3262240663900413) internal successors, (40081), 12053 states have internal predecessors, (40081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 40081 transitions. [2021-03-11 12:18:07,616 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 40081 transitions. Word has length 31 [2021-03-11 12:18:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:07,617 INFO L480 AbstractCegarLoop]: Abstraction has 12054 states and 40081 transitions. [2021-03-11 12:18:07,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:07,617 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 40081 transitions. [2021-03-11 12:18:07,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:07,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:07,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:07,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 12:18:07,627 INFO L428 AbstractCegarLoop]: === Iteration 85 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:07,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2130409047, now seen corresponding path program 34 times [2021-03-11 12:18:07,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:07,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248485878] [2021-03-11 12:18:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:07,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:07,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:18:07,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:18:07,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:18:07,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:18:07,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:18:07,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:07,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:18:07,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 75.3 percent of original size [2021-03-11 12:18:07,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:18:07,878 INFO L142 QuantifierPusher]: treesize reduction 53, result has 72.3 percent of original size [2021-03-11 12:18:07,879 INFO L147 QuantifierPusher]: treesize reduction 19, result has 86.2 percent of original size 119 [2021-03-11 12:18:07,926 INFO L142 QuantifierPusher]: treesize reduction 70, result has 70.5 percent of original size [2021-03-11 12:18:07,939 INFO L147 QuantifierPusher]: treesize reduction 17, result has 89.8 percent of original size 150 [2021-03-11 12:18:07,997 INFO L142 QuantifierPusher]: treesize reduction 152, result has 41.5 percent of original size [2021-03-11 12:18:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:18:08,013 INFO L142 QuantifierPusher]: treesize reduction 148, result has 50.3 percent of original size [2021-03-11 12:18:08,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-03-11 12:18:08,108 INFO L142 QuantifierPusher]: treesize reduction 223, result has 67.5 percent of original size [2021-03-11 12:18:08,110 INFO L147 QuantifierPusher]: treesize reduction 65, result has 86.0 percent of original size 398 [2021-03-11 12:18:08,297 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2021-03-11 12:18:08,299 INFO L142 QuantifierPusher]: treesize reduction 82, result has 73.6 percent of original size [2021-03-11 12:18:08,300 INFO L147 QuantifierPusher]: treesize reduction 17, result has 92.6 percent of original size 212 [2021-03-11 12:18:08,405 INFO L142 QuantifierPusher]: treesize reduction 148, result has 62.6 percent of original size [2021-03-11 12:18:08,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-03-11 12:18:08,517 INFO L142 QuantifierPusher]: treesize reduction 78, result has 42.2 percent of original size [2021-03-11 12:18:08,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-11 12:18:08,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:08,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:18:08,585 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:18:08,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:18:08,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:08,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:08,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:08,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:08,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248485878] [2021-03-11 12:18:08,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:08,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:08,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506909092] [2021-03-11 12:18:08,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:08,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:08,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:08,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:08,616 INFO L87 Difference]: Start difference. First operand 12054 states and 40081 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:10,100 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-11 12:18:10,236 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-11 12:18:10,507 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 71 [2021-03-11 12:18:10,657 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-03-11 12:18:11,088 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-03-11 12:18:11,925 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-11 12:18:12,138 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-11 12:18:12,457 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-03-11 12:18:12,624 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-03-11 12:18:12,874 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 79 [2021-03-11 12:18:13,055 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2021-03-11 12:18:13,347 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-03-11 12:18:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:13,537 INFO L93 Difference]: Finished difference Result 13734 states and 45151 transitions. [2021-03-11 12:18:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:18:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:13,558 INFO L225 Difference]: With dead ends: 13734 [2021-03-11 12:18:13,558 INFO L226 Difference]: Without dead ends: 13734 [2021-03-11 12:18:13,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3885.6ms TimeCoverageRelationStatistics Valid=636, Invalid=1526, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 12:18:13,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2021-03-11 12:18:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12217. [2021-03-11 12:18:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12217 states, 12213 states have (on average 3.325145336936052) internal successors, (40610), 12216 states have internal predecessors, (40610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12217 states to 12217 states and 40610 transitions. [2021-03-11 12:18:13,770 INFO L78 Accepts]: Start accepts. Automaton has 12217 states and 40610 transitions. Word has length 31 [2021-03-11 12:18:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:13,770 INFO L480 AbstractCegarLoop]: Abstraction has 12217 states and 40610 transitions. [2021-03-11 12:18:13,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 12217 states and 40610 transitions. [2021-03-11 12:18:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:13,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:13,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:13,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 12:18:13,781 INFO L428 AbstractCegarLoop]: === Iteration 86 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash 72676011, now seen corresponding path program 35 times [2021-03-11 12:18:13,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:13,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241402349] [2021-03-11 12:18:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:13,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:13,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:13,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:13,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:13,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:13,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:13,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:13,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:13,946 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:18:13,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:13,974 INFO L142 QuantifierPusher]: treesize reduction 26, result has 72.9 percent of original size [2021-03-11 12:18:13,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:14,014 INFO L142 QuantifierPusher]: treesize reduction 20, result has 76.2 percent of original size [2021-03-11 12:18:14,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:18:14,025 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.8 percent of original size [2021-03-11 12:18:14,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:14,064 INFO L142 QuantifierPusher]: treesize reduction 40, result has 71.4 percent of original size [2021-03-11 12:18:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:18:14,114 INFO L142 QuantifierPusher]: treesize reduction 40, result has 72.0 percent of original size [2021-03-11 12:18:14,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:18:14,170 INFO L142 QuantifierPusher]: treesize reduction 40, result has 71.4 percent of original size [2021-03-11 12:18:14,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:18:14,223 INFO L142 QuantifierPusher]: treesize reduction 60, result has 63.4 percent of original size [2021-03-11 12:18:14,223 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-03-11 12:18:14,283 INFO L142 QuantifierPusher]: treesize reduction 58, result has 67.6 percent of original size [2021-03-11 12:18:14,284 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.2 percent of original size 114 [2021-03-11 12:18:14,354 INFO L142 QuantifierPusher]: treesize reduction 42, result has 50.6 percent of original size [2021-03-11 12:18:14,355 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:18:14,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:14,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:14,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241402349] [2021-03-11 12:18:14,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:14,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:14,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667305014] [2021-03-11 12:18:14,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:14,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:14,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:14,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:14,418 INFO L87 Difference]: Start difference. First operand 12217 states and 40610 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:16,784 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-11 12:18:16,969 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2021-03-11 12:18:17,226 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-03-11 12:18:17,363 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-03-11 12:18:17,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:17,553 INFO L93 Difference]: Finished difference Result 12936 states and 42771 transitions. [2021-03-11 12:18:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:18:17,554 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:17,611 INFO L225 Difference]: With dead ends: 12936 [2021-03-11 12:18:17,611 INFO L226 Difference]: Without dead ends: 12936 [2021-03-11 12:18:17,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2325.4ms TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 12:18:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12936 states. [2021-03-11 12:18:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12936 to 12224. [2021-03-11 12:18:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12224 states, 12220 states have (on average 3.3249590834697216) internal successors, (40631), 12223 states have internal predecessors, (40631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12224 states to 12224 states and 40631 transitions. [2021-03-11 12:18:17,744 INFO L78 Accepts]: Start accepts. Automaton has 12224 states and 40631 transitions. Word has length 31 [2021-03-11 12:18:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:17,745 INFO L480 AbstractCegarLoop]: Abstraction has 12224 states and 40631 transitions. [2021-03-11 12:18:17,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12224 states and 40631 transitions. [2021-03-11 12:18:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:17,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:17,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:17,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 12:18:17,756 INFO L428 AbstractCegarLoop]: === Iteration 87 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:17,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2122184847, now seen corresponding path program 36 times [2021-03-11 12:18:17,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:17,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484798614] [2021-03-11 12:18:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:17,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:17,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:17,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:18:17,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:18:17,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:18:17,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:18:17,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:17,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:18:17,969 INFO L142 QuantifierPusher]: treesize reduction 25, result has 67.1 percent of original size [2021-03-11 12:18:17,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:18:18,000 INFO L142 QuantifierPusher]: treesize reduction 150, result has 69.3 percent of original size [2021-03-11 12:18:18,001 INFO L147 QuantifierPusher]: treesize reduction 14, result has 95.9 percent of original size 325 [2021-03-11 12:18:18,053 INFO L142 QuantifierPusher]: treesize reduction 17, result has 84.0 percent of original size [2021-03-11 12:18:18,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-11 12:18:18,064 INFO L142 QuantifierPusher]: treesize reduction 20, result has 81.8 percent of original size [2021-03-11 12:18:18,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-03-11 12:18:18,116 INFO L142 QuantifierPusher]: treesize reduction 82, result has 63.2 percent of original size [2021-03-11 12:18:18,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 141 [2021-03-11 12:18:18,187 INFO L142 QuantifierPusher]: treesize reduction 246, result has 42.1 percent of original size [2021-03-11 12:18:18,188 INFO L147 QuantifierPusher]: treesize reduction 13, result has 92.7 percent of original size 166 [2021-03-11 12:18:18,284 INFO L142 QuantifierPusher]: treesize reduction 86, result has 64.2 percent of original size [2021-03-11 12:18:18,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-03-11 12:18:18,363 INFO L142 QuantifierPusher]: treesize reduction 139, result has 48.9 percent of original size [2021-03-11 12:18:18,364 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.2 percent of original size 128 [2021-03-11 12:18:18,441 INFO L142 QuantifierPusher]: treesize reduction 77, result has 39.8 percent of original size [2021-03-11 12:18:18,442 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-03-11 12:18:18,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:18,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:18:18,500 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:18:18,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:18:18,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:18,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:18,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:18,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:18,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:18,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484798614] [2021-03-11 12:18:18,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:18,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:18,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998453403] [2021-03-11 12:18:18,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:18,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:18,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:18,533 INFO L87 Difference]: Start difference. First operand 12224 states and 40631 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:19,912 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:18:20,168 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-11 12:18:20,551 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-03-11 12:18:21,400 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-03-11 12:18:21,855 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-03-11 12:18:22,064 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-11 12:18:22,321 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2021-03-11 12:18:22,494 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-03-11 12:18:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:22,621 INFO L93 Difference]: Finished difference Result 13694 states and 45051 transitions. [2021-03-11 12:18:22,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:18:22,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:22,643 INFO L225 Difference]: With dead ends: 13694 [2021-03-11 12:18:22,643 INFO L226 Difference]: Without dead ends: 13694 [2021-03-11 12:18:22,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3060.2ms TimeCoverageRelationStatistics Valid=564, Invalid=1416, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 12:18:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13694 states. [2021-03-11 12:18:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13694 to 12207. [2021-03-11 12:18:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12207 states, 12203 states have (on average 3.325411783987544) internal successors, (40580), 12206 states have internal predecessors, (40580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12207 states to 12207 states and 40580 transitions. [2021-03-11 12:18:22,793 INFO L78 Accepts]: Start accepts. Automaton has 12207 states and 40580 transitions. Word has length 31 [2021-03-11 12:18:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:22,793 INFO L480 AbstractCegarLoop]: Abstraction has 12207 states and 40580 transitions. [2021-03-11 12:18:22,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12207 states and 40580 transitions. [2021-03-11 12:18:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:22,805 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:22,805 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:22,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 12:18:22,805 INFO L428 AbstractCegarLoop]: === Iteration 88 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:22,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 552808555, now seen corresponding path program 37 times [2021-03-11 12:18:22,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:22,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041251509] [2021-03-11 12:18:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:22,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:22,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:22,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:22,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:22,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:22,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:22,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:22,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:22,977 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:18:22,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:18:23,006 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-03-11 12:18:23,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:18:23,040 INFO L142 QuantifierPusher]: treesize reduction 33, result has 55.4 percent of original size [2021-03-11 12:18:23,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:18:23,041 INFO L142 QuantifierPusher]: treesize reduction 15, result has 75.8 percent of original size [2021-03-11 12:18:23,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:18:23,080 INFO L142 QuantifierPusher]: treesize reduction 47, result has 73.7 percent of original size [2021-03-11 12:18:23,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 132 [2021-03-11 12:18:23,143 INFO L142 QuantifierPusher]: treesize reduction 56, result has 71.4 percent of original size [2021-03-11 12:18:23,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:18:23,215 INFO L142 QuantifierPusher]: treesize reduction 52, result has 72.2 percent of original size [2021-03-11 12:18:23,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:18:23,287 INFO L142 QuantifierPusher]: treesize reduction 66, result has 68.3 percent of original size [2021-03-11 12:18:23,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-03-11 12:18:23,362 INFO L142 QuantifierPusher]: treesize reduction 31, result has 53.7 percent of original size [2021-03-11 12:18:23,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:18:23,394 INFO L142 QuantifierPusher]: treesize reduction 46, result has 43.2 percent of original size [2021-03-11 12:18:23,394 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:18:23,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:23,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:23,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:23,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:23,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041251509] [2021-03-11 12:18:23,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:23,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:23,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886927860] [2021-03-11 12:18:23,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:23,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:23,451 INFO L87 Difference]: Start difference. First operand 12207 states and 40580 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:25,742 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2021-03-11 12:18:25,869 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-03-11 12:18:26,054 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:18:26,320 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-03-11 12:18:26,555 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-03-11 12:18:26,749 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-03-11 12:18:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:26,905 INFO L93 Difference]: Finished difference Result 13054 states and 43143 transitions. [2021-03-11 12:18:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:18:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:26,925 INFO L225 Difference]: With dead ends: 13054 [2021-03-11 12:18:26,925 INFO L226 Difference]: Without dead ends: 13054 [2021-03-11 12:18:26,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2658.0ms TimeCoverageRelationStatistics Valid=446, Invalid=1114, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:18:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13054 states. [2021-03-11 12:18:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13054 to 12222. [2021-03-11 12:18:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12222 states, 12218 states have (on average 3.325175969880504) internal successors, (40627), 12221 states have internal predecessors, (40627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12222 states to 12222 states and 40627 transitions. [2021-03-11 12:18:27,074 INFO L78 Accepts]: Start accepts. Automaton has 12222 states and 40627 transitions. Word has length 31 [2021-03-11 12:18:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:27,074 INFO L480 AbstractCegarLoop]: Abstraction has 12222 states and 40627 transitions. [2021-03-11 12:18:27,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 12222 states and 40627 transitions. [2021-03-11 12:18:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:27,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:27,085 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:27,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 12:18:27,085 INFO L428 AbstractCegarLoop]: === Iteration 89 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash -902997213, now seen corresponding path program 38 times [2021-03-11 12:18:27,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:27,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805348853] [2021-03-11 12:18:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:27,116 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:18:27,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:27,124 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:18:27,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:27,135 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:18:27,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:27,147 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:27,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:27,171 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:27,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:27,196 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:27,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:27,221 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:27,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:27,248 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:18:27,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:27,276 INFO L142 QuantifierPusher]: treesize reduction 29, result has 70.7 percent of original size [2021-03-11 12:18:27,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:27,316 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-03-11 12:18:27,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:18:27,328 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-03-11 12:18:27,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:18:27,371 INFO L142 QuantifierPusher]: treesize reduction 48, result has 71.4 percent of original size [2021-03-11 12:18:27,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:18:27,429 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-03-11 12:18:27,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:18:27,452 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:18:27,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:18:27,484 INFO L142 QuantifierPusher]: treesize reduction 49, result has 41.7 percent of original size [2021-03-11 12:18:27,485 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:18:27,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:27,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:27,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:27,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:27,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805348853] [2021-03-11 12:18:27,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:27,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:18:27,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733220485] [2021-03-11 12:18:27,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:18:27,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:27,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:18:27,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:18:27,541 INFO L87 Difference]: Start difference. First operand 12222 states and 40627 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:28,981 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-11 12:18:30,403 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-03-11 12:18:30,550 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-03-11 12:18:30,997 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-11 12:18:31,132 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-03-11 12:18:31,282 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-03-11 12:18:31,489 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:18:31,797 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2021-03-11 12:18:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:32,003 INFO L93 Difference]: Finished difference Result 13152 states and 43445 transitions. [2021-03-11 12:18:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 12:18:32,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:32,025 INFO L225 Difference]: With dead ends: 13152 [2021-03-11 12:18:32,025 INFO L226 Difference]: Without dead ends: 13152 [2021-03-11 12:18:32,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 3191.3ms TimeCoverageRelationStatistics Valid=612, Invalid=1368, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 12:18:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13152 states. [2021-03-11 12:18:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13152 to 12472. [2021-03-11 12:18:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12472 states, 12468 states have (on average 3.3218639717677254) internal successors, (41417), 12471 states have internal predecessors, (41417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12472 states to 12472 states and 41417 transitions. [2021-03-11 12:18:32,190 INFO L78 Accepts]: Start accepts. Automaton has 12472 states and 41417 transitions. Word has length 31 [2021-03-11 12:18:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:32,190 INFO L480 AbstractCegarLoop]: Abstraction has 12472 states and 41417 transitions. [2021-03-11 12:18:32,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12472 states and 41417 transitions. [2021-03-11 12:18:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:32,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:32,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:32,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 12:18:32,202 INFO L428 AbstractCegarLoop]: === Iteration 90 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:32,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1424112815, now seen corresponding path program 39 times [2021-03-11 12:18:32,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:32,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96803474] [2021-03-11 12:18:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:32,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:32,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:32,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:18:32,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:32,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:18:32,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:18:32,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:18:32,498 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.3 percent of original size [2021-03-11 12:18:32,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:18:32,543 INFO L142 QuantifierPusher]: treesize reduction 369, result has 26.6 percent of original size [2021-03-11 12:18:32,544 INFO L147 QuantifierPusher]: treesize reduction 22, result has 83.6 percent of original size 112 [2021-03-11 12:18:32,603 INFO L142 QuantifierPusher]: treesize reduction 41, result has 64.3 percent of original size [2021-03-11 12:18:32,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:18:32,617 INFO L142 QuantifierPusher]: treesize reduction 43, result has 65.0 percent of original size [2021-03-11 12:18:32,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:18:32,686 INFO L142 QuantifierPusher]: treesize reduction 77, result has 64.5 percent of original size [2021-03-11 12:18:32,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:18:32,772 INFO L142 QuantifierPusher]: treesize reduction 68, result has 69.1 percent of original size [2021-03-11 12:18:32,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-03-11 12:18:32,859 INFO L142 QuantifierPusher]: treesize reduction 77, result has 64.5 percent of original size [2021-03-11 12:18:32,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:18:32,861 INFO L142 QuantifierPusher]: treesize reduction 58, result has 37.6 percent of original size [2021-03-11 12:18:32,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:18:32,889 INFO L142 QuantifierPusher]: treesize reduction 64, result has 50.4 percent of original size [2021-03-11 12:18:32,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-03-11 12:18:32,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:18:32,950 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:18:32,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:18:32,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:32,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:32,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:32,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96803474] [2021-03-11 12:18:32,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:32,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:18:32,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126606927] [2021-03-11 12:18:32,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:18:32,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:18:32,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:18:32,977 INFO L87 Difference]: Start difference. First operand 12472 states and 41417 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:34,736 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-03-11 12:18:34,880 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-03-11 12:18:35,151 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-03-11 12:18:35,307 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2021-03-11 12:18:35,757 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2021-03-11 12:18:36,536 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-11 12:18:36,748 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:18:36,877 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-11 12:18:37,098 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-03-11 12:18:37,321 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-03-11 12:18:37,459 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-03-11 12:18:37,659 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2021-03-11 12:18:37,833 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2021-03-11 12:18:38,065 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2021-03-11 12:18:38,260 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-03-11 12:18:38,577 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2021-03-11 12:18:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:38,746 INFO L93 Difference]: Finished difference Result 13953 states and 45830 transitions. [2021-03-11 12:18:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 12:18:38,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:38,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:38,767 INFO L225 Difference]: With dead ends: 13953 [2021-03-11 12:18:38,767 INFO L226 Difference]: Without dead ends: 13953 [2021-03-11 12:18:38,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 4492.5ms TimeCoverageRelationStatistics Valid=867, Invalid=1995, Unknown=0, NotChecked=0, Total=2862 [2021-03-11 12:18:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13953 states. [2021-03-11 12:18:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13953 to 12197. [2021-03-11 12:18:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12197 states, 12193 states have (on average 3.3256786680882473) internal successors, (40550), 12196 states have internal predecessors, (40550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 40550 transitions. [2021-03-11 12:18:38,919 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 40550 transitions. Word has length 31 [2021-03-11 12:18:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:38,919 INFO L480 AbstractCegarLoop]: Abstraction has 12197 states and 40550 transitions. [2021-03-11 12:18:38,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 40550 transitions. [2021-03-11 12:18:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:38,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:38,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:38,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 12:18:38,931 INFO L428 AbstractCegarLoop]: === Iteration 91 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1458007605, now seen corresponding path program 40 times [2021-03-11 12:18:38,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:38,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198504542] [2021-03-11 12:18:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:38,956 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:18:38,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:38,965 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:18:38,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:38,976 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:18:38,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:38,988 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:38,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:39,012 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:39,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:39,038 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:18:39,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:39,064 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:18:39,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:39,092 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:18:39,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:39,121 INFO L142 QuantifierPusher]: treesize reduction 61, result has 55.5 percent of original size [2021-03-11 12:18:39,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-11 12:18:39,161 INFO L142 QuantifierPusher]: treesize reduction 40, result has 72.4 percent of original size [2021-03-11 12:18:39,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:18:39,211 INFO L142 QuantifierPusher]: treesize reduction 34, result has 75.0 percent of original size [2021-03-11 12:18:39,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-03-11 12:18:39,226 INFO L142 QuantifierPusher]: treesize reduction 44, result has 73.5 percent of original size [2021-03-11 12:18:39,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:18:39,290 INFO L142 QuantifierPusher]: treesize reduction 44, result has 74.0 percent of original size [2021-03-11 12:18:39,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:18:39,358 INFO L142 QuantifierPusher]: treesize reduction 40, result has 77.0 percent of original size [2021-03-11 12:18:39,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:18:39,381 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.2 percent of original size [2021-03-11 12:18:39,381 INFO L147 QuantifierPusher]: treesize reduction 10, result has 92.7 percent of original size 127 [2021-03-11 12:18:39,455 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:18:39,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:18:39,477 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:18:39,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:18:39,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:39,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:39,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:39,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:39,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198504542] [2021-03-11 12:18:39,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:39,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:18:39,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072872959] [2021-03-11 12:18:39,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:18:39,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:39,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:18:39,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:18:39,522 INFO L87 Difference]: Start difference. First operand 12197 states and 40550 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:41,501 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-03-11 12:18:42,282 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-11 12:18:42,959 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-03-11 12:18:43,092 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-03-11 12:18:43,241 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2021-03-11 12:18:43,392 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-03-11 12:18:43,570 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2021-03-11 12:18:43,725 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-03-11 12:18:43,979 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 80 [2021-03-11 12:18:44,129 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2021-03-11 12:18:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:44,323 INFO L93 Difference]: Finished difference Result 13339 states and 43982 transitions. [2021-03-11 12:18:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 12:18:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:44,343 INFO L225 Difference]: With dead ends: 13339 [2021-03-11 12:18:44,343 INFO L226 Difference]: Without dead ends: 13339 [2021-03-11 12:18:44,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3653.0ms TimeCoverageRelationStatistics Valid=700, Invalid=1556, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 12:18:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13339 states. [2021-03-11 12:18:44,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13339 to 12411. [2021-03-11 12:18:44,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12411 states, 12407 states have (on average 3.320061255742726) internal successors, (41192), 12410 states have internal predecessors, (41192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12411 states to 12411 states and 41192 transitions. [2021-03-11 12:18:44,499 INFO L78 Accepts]: Start accepts. Automaton has 12411 states and 41192 transitions. Word has length 31 [2021-03-11 12:18:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:44,500 INFO L480 AbstractCegarLoop]: Abstraction has 12411 states and 41192 transitions. [2021-03-11 12:18:44,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 12411 states and 41192 transitions. [2021-03-11 12:18:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:44,511 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:44,511 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:44,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 12:18:44,511 INFO L428 AbstractCegarLoop]: === Iteration 92 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1469900525, now seen corresponding path program 41 times [2021-03-11 12:18:44,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:44,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490027454] [2021-03-11 12:18:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:44,541 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:18:44,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:44,555 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:18:44,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:44,577 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:18:44,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:18:44,597 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:44,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:44,637 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:44,664 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:44,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:44,691 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:18:44,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:18:44,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:18:44,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:18:44,752 INFO L142 QuantifierPusher]: treesize reduction 85, result has 51.4 percent of original size [2021-03-11 12:18:44,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-03-11 12:18:44,792 INFO L142 QuantifierPusher]: treesize reduction 58, result has 67.4 percent of original size [2021-03-11 12:18:44,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:18:44,837 INFO L142 QuantifierPusher]: treesize reduction 55, result has 69.9 percent of original size [2021-03-11 12:18:44,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-03-11 12:18:44,853 INFO L142 QuantifierPusher]: treesize reduction 96, result has 57.7 percent of original size [2021-03-11 12:18:44,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:18:44,915 INFO L142 QuantifierPusher]: treesize reduction 176, result has 59.4 percent of original size [2021-03-11 12:18:44,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-03-11 12:18:45,005 INFO L142 QuantifierPusher]: treesize reduction 79, result has 67.8 percent of original size [2021-03-11 12:18:45,006 INFO L147 QuantifierPusher]: treesize reduction 22, result has 86.7 percent of original size 144 [2021-03-11 12:18:45,093 INFO L142 QuantifierPusher]: treesize reduction 88, result has 67.4 percent of original size [2021-03-11 12:18:45,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-03-11 12:18:45,188 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:18:45,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:45,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:45,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:18:45,232 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:18:45,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:18:45,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:45,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:45,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:45,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:45,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490027454] [2021-03-11 12:18:45,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:45,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:45,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278897507] [2021-03-11 12:18:45,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:45,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:45,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:45,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:45,259 INFO L87 Difference]: Start difference. First operand 12411 states and 41192 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:46,933 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-03-11 12:18:47,082 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-03-11 12:18:47,326 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-03-11 12:18:47,795 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2021-03-11 12:18:48,624 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-03-11 12:18:48,838 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-11 12:18:49,159 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-03-11 12:18:49,378 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-03-11 12:18:49,547 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:18:49,753 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-03-11 12:18:50,063 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 82 [2021-03-11 12:18:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:50,235 INFO L93 Difference]: Finished difference Result 14131 states and 46382 transitions. [2021-03-11 12:18:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 12:18:50,236 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:50,257 INFO L225 Difference]: With dead ends: 14131 [2021-03-11 12:18:50,257 INFO L226 Difference]: Without dead ends: 14131 [2021-03-11 12:18:50,257 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3651.3ms TimeCoverageRelationStatistics Valid=710, Invalid=1642, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 12:18:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14131 states. [2021-03-11 12:18:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14131 to 12387. [2021-03-11 12:18:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12387 states, 12383 states have (on average 3.3206815795849147) internal successors, (41120), 12386 states have internal predecessors, (41120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12387 states to 12387 states and 41120 transitions. [2021-03-11 12:18:50,425 INFO L78 Accepts]: Start accepts. Automaton has 12387 states and 41120 transitions. Word has length 31 [2021-03-11 12:18:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:50,425 INFO L480 AbstractCegarLoop]: Abstraction has 12387 states and 41120 transitions. [2021-03-11 12:18:50,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 12387 states and 41120 transitions. [2021-03-11 12:18:50,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:50,437 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:50,437 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:50,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 12:18:50,437 INFO L428 AbstractCegarLoop]: === Iteration 93 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1891632203, now seen corresponding path program 42 times [2021-03-11 12:18:50,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805551996] [2021-03-11 12:18:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:50,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:18:50,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:18:50,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:18:50,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:50,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:50,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:50,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:50,600 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:18:50,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:50,627 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:18:50,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:18:50,656 INFO L142 QuantifierPusher]: treesize reduction 69, result has 49.3 percent of original size [2021-03-11 12:18:50,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:18:50,698 INFO L142 QuantifierPusher]: treesize reduction 53, result has 64.4 percent of original size [2021-03-11 12:18:50,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:18:50,747 INFO L142 QuantifierPusher]: treesize reduction 39, result has 70.9 percent of original size [2021-03-11 12:18:50,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-11 12:18:50,761 INFO L142 QuantifierPusher]: treesize reduction 38, result has 72.5 percent of original size [2021-03-11 12:18:50,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:18:50,815 INFO L142 QuantifierPusher]: treesize reduction 38, result has 73.0 percent of original size [2021-03-11 12:18:50,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:18:50,875 INFO L142 QuantifierPusher]: treesize reduction 38, result has 72.5 percent of original size [2021-03-11 12:18:50,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-03-11 12:18:50,929 INFO L142 QuantifierPusher]: treesize reduction 58, result has 64.2 percent of original size [2021-03-11 12:18:50,930 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.3 percent of original size 97 [2021-03-11 12:18:50,992 INFO L142 QuantifierPusher]: treesize reduction 56, result has 68.4 percent of original size [2021-03-11 12:18:50,993 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.2 percent of original size 114 [2021-03-11 12:18:51,066 INFO L142 QuantifierPusher]: treesize reduction 42, result has 50.6 percent of original size [2021-03-11 12:18:51,067 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:18:51,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:18:51,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:18:51,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:51,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:51,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805551996] [2021-03-11 12:18:51,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:51,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:18:51,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456125389] [2021-03-11 12:18:51,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:18:51,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:51,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:18:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:18:51,133 INFO L87 Difference]: Start difference. First operand 12387 states and 41120 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:52,789 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:18:53,521 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2021-03-11 12:18:53,756 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2021-03-11 12:18:53,927 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2021-03-11 12:18:54,168 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2021-03-11 12:18:54,305 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-03-11 12:18:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:18:54,503 INFO L93 Difference]: Finished difference Result 13284 states and 43813 transitions. [2021-03-11 12:18:54,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:18:54,504 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:18:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:18:54,525 INFO L225 Difference]: With dead ends: 13284 [2021-03-11 12:18:54,525 INFO L226 Difference]: Without dead ends: 13284 [2021-03-11 12:18:54,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2487.4ms TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 12:18:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13284 states. [2021-03-11 12:18:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13284 to 12394. [2021-03-11 12:18:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12394 states, 12390 states have (on average 3.320500403551251) internal successors, (41141), 12393 states have internal predecessors, (41141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12394 states to 12394 states and 41141 transitions. [2021-03-11 12:18:54,685 INFO L78 Accepts]: Start accepts. Automaton has 12394 states and 41141 transitions. Word has length 31 [2021-03-11 12:18:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:18:54,685 INFO L480 AbstractCegarLoop]: Abstraction has 12394 states and 41141 transitions. [2021-03-11 12:18:54,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 12394 states and 41141 transitions. [2021-03-11 12:18:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:18:54,696 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:18:54,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:18:54,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 12:18:54,697 INFO L428 AbstractCegarLoop]: === Iteration 94 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:18:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:18:54,697 INFO L82 PathProgramCache]: Analyzing trace with hash 208474235, now seen corresponding path program 43 times [2021-03-11 12:18:54,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:18:54,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485301387] [2021-03-11 12:18:54,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:18:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:18:54,729 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:18:54,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:18:54,743 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:18:54,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:18:54,767 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:18:54,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:18:54,790 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:54,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:54,816 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:54,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:54,844 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:18:54,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:54,871 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:18:54,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:54,900 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:18:54,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:18:54,930 INFO L142 QuantifierPusher]: treesize reduction 69, result has 51.7 percent of original size [2021-03-11 12:18:54,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:18:54,975 INFO L142 QuantifierPusher]: treesize reduction 175, result has 68.1 percent of original size [2021-03-11 12:18:54,977 INFO L147 QuantifierPusher]: treesize reduction 14, result has 96.2 percent of original size 359 [2021-03-11 12:18:55,053 INFO L142 QuantifierPusher]: treesize reduction 42, result has 73.1 percent of original size [2021-03-11 12:18:55,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:18:55,069 INFO L142 QuantifierPusher]: treesize reduction 70, result has 66.2 percent of original size [2021-03-11 12:18:55,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-03-11 12:18:55,143 INFO L142 QuantifierPusher]: treesize reduction 70, result has 66.7 percent of original size [2021-03-11 12:18:55,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:18:55,222 INFO L142 QuantifierPusher]: treesize reduction 66, result has 69.3 percent of original size [2021-03-11 12:18:55,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-03-11 12:18:55,249 INFO L142 QuantifierPusher]: treesize reduction 85, result has 64.9 percent of original size [2021-03-11 12:18:55,250 INFO L147 QuantifierPusher]: treesize reduction 13, result has 91.7 percent of original size 144 [2021-03-11 12:18:55,393 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2021-03-11 12:18:55,394 INFO L142 QuantifierPusher]: treesize reduction 55, result has 48.6 percent of original size [2021-03-11 12:18:55,395 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-03-11 12:18:55,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:18:55,456 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:18:55,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:18:55,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:55,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:55,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:18:55,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:18:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:18:55,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485301387] [2021-03-11 12:18:55,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:18:55,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:18:55,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570256436] [2021-03-11 12:18:55,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:18:55,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:18:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:18:55,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:18:55,485 INFO L87 Difference]: Start difference. First operand 12394 states and 41141 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:18:56,869 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-03-11 12:18:57,003 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-03-11 12:18:57,221 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-03-11 12:18:57,372 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:18:57,753 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 76 [2021-03-11 12:18:57,935 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2021-03-11 12:18:58,721 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2021-03-11 12:18:58,925 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-11 12:18:59,210 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2021-03-11 12:18:59,376 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-11 12:18:59,601 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 79 [2021-03-11 12:18:59,793 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-03-11 12:19:00,046 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2021-03-11 12:19:00,246 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 88 [2021-03-11 12:19:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:00,415 INFO L93 Difference]: Finished difference Result 14134 states and 46391 transitions. [2021-03-11 12:19:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-11 12:19:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:00,436 INFO L225 Difference]: With dead ends: 14134 [2021-03-11 12:19:00,436 INFO L226 Difference]: Without dead ends: 14134 [2021-03-11 12:19:00,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 3865.9ms TimeCoverageRelationStatistics Valid=689, Invalid=1567, Unknown=0, NotChecked=0, Total=2256 [2021-03-11 12:19:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14134 states. [2021-03-11 12:19:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14134 to 12317. [2021-03-11 12:19:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12317 states, 12313 states have (on average 3.3241289693819542) internal successors, (40930), 12316 states have internal predecessors, (40930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12317 states to 12317 states and 40930 transitions. [2021-03-11 12:19:00,590 INFO L78 Accepts]: Start accepts. Automaton has 12317 states and 40930 transitions. Word has length 31 [2021-03-11 12:19:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:00,590 INFO L480 AbstractCegarLoop]: Abstraction has 12317 states and 40930 transitions. [2021-03-11 12:19:00,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 12317 states and 40930 transitions. [2021-03-11 12:19:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:00,601 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:00,601 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:00,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 12:19:00,601 INFO L428 AbstractCegarLoop]: === Iteration 95 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:00,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:00,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1500381007, now seen corresponding path program 44 times [2021-03-11 12:19:00,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:00,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479141455] [2021-03-11 12:19:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:00,629 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:19:00,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:19:00,637 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:19:00,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:19:00,649 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:19:00,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:00,665 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:19:00,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:00,690 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:19:00,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:00,716 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:19:00,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:00,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:19:00,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:00,770 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:19:00,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:00,799 INFO L142 QuantifierPusher]: treesize reduction 43, result has 59.4 percent of original size [2021-03-11 12:19:00,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:19:00,839 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.0 percent of original size [2021-03-11 12:19:00,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 12:19:00,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.9 percent of original size [2021-03-11 12:19:00,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:19:00,897 INFO L142 QuantifierPusher]: treesize reduction 108, result has 50.0 percent of original size [2021-03-11 12:19:00,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:19:00,962 INFO L142 QuantifierPusher]: treesize reduction 44, result has 74.9 percent of original size [2021-03-11 12:19:00,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:19:01,039 INFO L142 QuantifierPusher]: treesize reduction 44, result has 75.3 percent of original size [2021-03-11 12:19:01,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:19:01,061 INFO L142 QuantifierPusher]: treesize reduction 72, result has 65.0 percent of original size [2021-03-11 12:19:01,061 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.5 percent of original size 128 [2021-03-11 12:19:01,133 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-03-11 12:19:01,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:19:01,156 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:19:01,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:19:01,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:19:01,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:19:01,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:01,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:01,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479141455] [2021-03-11 12:19:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:19:01,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353270662] [2021-03-11 12:19:01,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:19:01,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:01,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:19:01,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:19:01,203 INFO L87 Difference]: Start difference. First operand 12317 states and 40930 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:02,928 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-11 12:19:03,272 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-11 12:19:04,952 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2021-03-11 12:19:05,110 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-03-11 12:19:05,336 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-11 12:19:05,505 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-11 12:19:05,781 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-03-11 12:19:05,945 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-11 12:19:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:06,146 INFO L93 Difference]: Finished difference Result 13452 states and 44341 transitions. [2021-03-11 12:19:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 12:19:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:06,167 INFO L225 Difference]: With dead ends: 13452 [2021-03-11 12:19:06,167 INFO L226 Difference]: Without dead ends: 13452 [2021-03-11 12:19:06,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3475.2ms TimeCoverageRelationStatistics Valid=638, Invalid=1432, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:19:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2021-03-11 12:19:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 12391. [2021-03-11 12:19:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12391 states, 12387 states have (on average 3.3221926212965207) internal successors, (41152), 12390 states have internal predecessors, (41152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12391 states to 12391 states and 41152 transitions. [2021-03-11 12:19:06,320 INFO L78 Accepts]: Start accepts. Automaton has 12391 states and 41152 transitions. Word has length 31 [2021-03-11 12:19:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:06,320 INFO L480 AbstractCegarLoop]: Abstraction has 12391 states and 41152 transitions. [2021-03-11 12:19:06,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12391 states and 41152 transitions. [2021-03-11 12:19:06,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:06,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:06,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:06,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 12:19:06,331 INFO L428 AbstractCegarLoop]: === Iteration 96 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:06,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1512273927, now seen corresponding path program 45 times [2021-03-11 12:19:06,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:06,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765236080] [2021-03-11 12:19:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:06,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:19:06,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:19:06,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:19:06,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:06,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:06,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:06,518 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:19:06,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:06,549 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:19:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:06,581 INFO L142 QuantifierPusher]: treesize reduction 43, result has 65.0 percent of original size [2021-03-11 12:19:06,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:19:06,623 INFO L142 QuantifierPusher]: treesize reduction 30, result has 70.9 percent of original size [2021-03-11 12:19:06,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:19:06,635 INFO L142 QuantifierPusher]: treesize reduction 33, result has 77.6 percent of original size [2021-03-11 12:19:06,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:19:06,705 INFO L142 QuantifierPusher]: treesize reduction 159, result has 47.2 percent of original size [2021-03-11 12:19:06,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-03-11 12:19:06,790 INFO L142 QuantifierPusher]: treesize reduction 251, result has 63.6 percent of original size [2021-03-11 12:19:06,792 INFO L147 QuantifierPusher]: treesize reduction 48, result has 89.0 percent of original size 390 [2021-03-11 12:19:06,981 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2021-03-11 12:19:06,983 INFO L142 QuantifierPusher]: treesize reduction 110, result has 65.0 percent of original size [2021-03-11 12:19:06,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-03-11 12:19:07,136 INFO L142 QuantifierPusher]: treesize reduction 159, result has 60.1 percent of original size [2021-03-11 12:19:07,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-03-11 12:19:07,246 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:19:07,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:07,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:07,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:19:07,299 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:19:07,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:19:07,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:07,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:07,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:07,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:07,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765236080] [2021-03-11 12:19:07,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:07,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:19:07,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76917249] [2021-03-11 12:19:07,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:19:07,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:19:07,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:19:07,331 INFO L87 Difference]: Start difference. First operand 12391 states and 41152 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:08,684 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-11 12:19:09,154 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 60 [2021-03-11 12:19:09,504 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2021-03-11 12:19:10,011 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 67 [2021-03-11 12:19:10,830 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2021-03-11 12:19:11,267 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-11 12:19:11,441 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-11 12:19:11,726 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2021-03-11 12:19:12,042 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 70 [2021-03-11 12:19:12,397 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 75 [2021-03-11 12:19:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:12,556 INFO L93 Difference]: Finished difference Result 14321 states and 46992 transitions. [2021-03-11 12:19:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:19:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:12,578 INFO L225 Difference]: With dead ends: 14321 [2021-03-11 12:19:12,578 INFO L226 Difference]: Without dead ends: 14321 [2021-03-11 12:19:12,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 4067.6ms TimeCoverageRelationStatistics Valid=637, Invalid=1525, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 12:19:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2021-03-11 12:19:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 12367. [2021-03-11 12:19:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12367 states, 12363 states have (on average 3.3228180862250265) internal successors, (41080), 12366 states have internal predecessors, (41080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12367 states to 12367 states and 41080 transitions. [2021-03-11 12:19:12,740 INFO L78 Accepts]: Start accepts. Automaton has 12367 states and 41080 transitions. Word has length 31 [2021-03-11 12:19:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:12,740 INFO L480 AbstractCegarLoop]: Abstraction has 12367 states and 41080 transitions. [2021-03-11 12:19:12,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 12367 states and 41080 transitions. [2021-03-11 12:19:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:12,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:12,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:12,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 12:19:12,752 INFO L428 AbstractCegarLoop]: === Iteration 97 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:12,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1849258801, now seen corresponding path program 46 times [2021-03-11 12:19:12,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:12,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484782771] [2021-03-11 12:19:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:12,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:19:12,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:19:12,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:12,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:12,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:12,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:12,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:12,895 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:19:12,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:12,924 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:19:12,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:12,955 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.9 percent of original size [2021-03-11 12:19:12,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:19:12,991 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-03-11 12:19:13,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:13,008 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-03-11 12:19:13,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:13,051 INFO L142 QuantifierPusher]: treesize reduction 60, result has 67.6 percent of original size [2021-03-11 12:19:13,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:19:13,116 INFO L142 QuantifierPusher]: treesize reduction 69, result has 64.8 percent of original size [2021-03-11 12:19:13,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:19:13,182 INFO L142 QuantifierPusher]: treesize reduction 65, result has 65.6 percent of original size [2021-03-11 12:19:13,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:19:13,242 INFO L142 QuantifierPusher]: treesize reduction 80, result has 62.4 percent of original size [2021-03-11 12:19:13,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:19:13,307 INFO L142 QuantifierPusher]: treesize reduction 71, result has 69.0 percent of original size [2021-03-11 12:19:13,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-03-11 12:19:13,385 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-03-11 12:19:13,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:13,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:19:13,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:19:13,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:13,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:13,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484782771] [2021-03-11 12:19:13,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:13,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:19:13,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462254985] [2021-03-11 12:19:13,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:19:13,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:13,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:19:13,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:19:13,448 INFO L87 Difference]: Start difference. First operand 12367 states and 41080 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:15,284 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2021-03-11 12:19:16,308 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-11 12:19:16,505 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-03-11 12:19:16,770 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2021-03-11 12:19:16,904 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-03-11 12:19:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:17,106 INFO L93 Difference]: Finished difference Result 13406 states and 44201 transitions. [2021-03-11 12:19:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-11 12:19:17,107 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:17,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:17,127 INFO L225 Difference]: With dead ends: 13406 [2021-03-11 12:19:17,128 INFO L226 Difference]: Without dead ends: 13406 [2021-03-11 12:19:17,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2454.6ms TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2021-03-11 12:19:17,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13406 states. [2021-03-11 12:19:17,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13406 to 12374. [2021-03-11 12:19:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12374 states, 12370 states have (on average 3.322635408245756) internal successors, (41101), 12373 states have internal predecessors, (41101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12374 states to 12374 states and 41101 transitions. [2021-03-11 12:19:17,284 INFO L78 Accepts]: Start accepts. Automaton has 12374 states and 41101 transitions. Word has length 31 [2021-03-11 12:19:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:17,285 INFO L480 AbstractCegarLoop]: Abstraction has 12374 states and 41101 transitions. [2021-03-11 12:19:17,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 12374 states and 41101 transitions. [2021-03-11 12:19:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:17,295 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:17,296 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:17,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 12:19:17,296 INFO L428 AbstractCegarLoop]: === Iteration 98 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 250847637, now seen corresponding path program 47 times [2021-03-11 12:19:17,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:17,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169006167] [2021-03-11 12:19:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:17,328 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:19:17,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:19:17,345 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:19:17,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:19:17,373 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:19:17,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:19:17,399 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:17,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:17,431 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:17,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:17,464 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:17,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:17,497 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:19:17,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:19:17,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:19:17,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:19:17,569 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-03-11 12:19:17,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:19:17,615 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.1 percent of original size [2021-03-11 12:19:17,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:19:17,628 INFO L142 QuantifierPusher]: treesize reduction 22, result has 72.8 percent of original size [2021-03-11 12:19:17,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:19:17,683 INFO L142 QuantifierPusher]: treesize reduction 80, result has 63.5 percent of original size [2021-03-11 12:19:17,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-03-11 12:19:17,768 INFO L142 QuantifierPusher]: treesize reduction 164, result has 61.8 percent of original size [2021-03-11 12:19:17,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-03-11 12:19:17,870 INFO L142 QuantifierPusher]: treesize reduction 89, result has 62.9 percent of original size [2021-03-11 12:19:17,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-03-11 12:19:17,963 INFO L142 QuantifierPusher]: treesize reduction 111, result has 59.2 percent of original size [2021-03-11 12:19:17,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-03-11 12:19:18,044 INFO L142 QuantifierPusher]: treesize reduction 69, result has 42.5 percent of original size [2021-03-11 12:19:18,045 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-03-11 12:19:18,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:18,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:19:18,107 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:19:18,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:18,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:18,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:18,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:18,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:18,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169006167] [2021-03-11 12:19:18,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:18,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:19:18,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286372131] [2021-03-11 12:19:18,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:19:18,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:18,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:19:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:19:18,142 INFO L87 Difference]: Start difference. First operand 12374 states and 41101 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:19,707 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 12:19:19,993 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-03-11 12:19:20,428 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-03-11 12:19:20,802 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-03-11 12:19:21,604 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2021-03-11 12:19:21,827 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-11 12:19:22,054 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2021-03-11 12:19:22,341 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-03-11 12:19:22,530 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-03-11 12:19:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:22,687 INFO L93 Difference]: Finished difference Result 14244 states and 46741 transitions. [2021-03-11 12:19:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:19:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:22,710 INFO L225 Difference]: With dead ends: 14244 [2021-03-11 12:19:22,710 INFO L226 Difference]: Without dead ends: 14244 [2021-03-11 12:19:22,711 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3261.3ms TimeCoverageRelationStatistics Valid=564, Invalid=1416, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 12:19:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14244 states. [2021-03-11 12:19:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14244 to 12357. [2021-03-11 12:19:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 12353 states have (on average 3.323079413907553) internal successors, (41050), 12356 states have internal predecessors, (41050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 41050 transitions. [2021-03-11 12:19:22,873 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 41050 transitions. Word has length 31 [2021-03-11 12:19:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:22,873 INFO L480 AbstractCegarLoop]: Abstraction has 12357 states and 41050 transitions. [2021-03-11 12:19:22,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 41050 transitions. [2021-03-11 12:19:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:22,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:22,885 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:22,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 12:19:22,885 INFO L428 AbstractCegarLoop]: === Iteration 99 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1369126257, now seen corresponding path program 48 times [2021-03-11 12:19:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:22,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251061839] [2021-03-11 12:19:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:22,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:22,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:19:22,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:22,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:19:22,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:22,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:22,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:22,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:22,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:23,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:23,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:23,033 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:19:23,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:23,061 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:19:23,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:23,092 INFO L142 QuantifierPusher]: treesize reduction 23, result has 75.0 percent of original size [2021-03-11 12:19:23,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:19:23,133 INFO L142 QuantifierPusher]: treesize reduction 17, result has 78.2 percent of original size [2021-03-11 12:19:23,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:19:23,144 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.4 percent of original size [2021-03-11 12:19:23,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:23,183 INFO L142 QuantifierPusher]: treesize reduction 40, result has 73.7 percent of original size [2021-03-11 12:19:23,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:19:23,294 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.0 percent of original size [2021-03-11 12:19:23,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:19:23,359 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:19:23,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:19:23,391 INFO L142 QuantifierPusher]: treesize reduction 49, result has 41.7 percent of original size [2021-03-11 12:19:23,391 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:19:23,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:19:23,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:19:23,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:23,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:23,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251061839] [2021-03-11 12:19:23,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:23,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:19:23,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116071800] [2021-03-11 12:19:23,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:19:23,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:19:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:19:23,448 INFO L87 Difference]: Start difference. First operand 12357 states and 41050 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:25,557 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-11 12:19:25,694 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-11 12:19:26,023 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:19:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:26,279 INFO L93 Difference]: Finished difference Result 13424 states and 44257 transitions. [2021-03-11 12:19:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 12:19:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:26,300 INFO L225 Difference]: With dead ends: 13424 [2021-03-11 12:19:26,300 INFO L226 Difference]: Without dead ends: 13424 [2021-03-11 12:19:26,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1936.5ms TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2021-03-11 12:19:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13424 states. [2021-03-11 12:19:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13424 to 12372. [2021-03-11 12:19:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 12368 states have (on average 3.3228492884864167) internal successors, (41097), 12371 states have internal predecessors, (41097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 41097 transitions. [2021-03-11 12:19:26,455 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 41097 transitions. Word has length 31 [2021-03-11 12:19:26,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:26,455 INFO L480 AbstractCegarLoop]: Abstraction has 12372 states and 41097 transitions. [2021-03-11 12:19:26,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 41097 transitions. [2021-03-11 12:19:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:26,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:26,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:26,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 12:19:26,466 INFO L428 AbstractCegarLoop]: === Iteration 100 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1470035271, now seen corresponding path program 49 times [2021-03-11 12:19:26,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:26,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975958520] [2021-03-11 12:19:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:26,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:26,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-03-11 12:19:26,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:26,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:26,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:26,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:26,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:26,663 INFO L142 QuantifierPusher]: treesize reduction 25, result has 63.2 percent of original size [2021-03-11 12:19:26,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:26,698 INFO L142 QuantifierPusher]: treesize reduction 25, result has 63.2 percent of original size [2021-03-11 12:19:26,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:26,737 INFO L142 QuantifierPusher]: treesize reduction 369, result has 26.1 percent of original size [2021-03-11 12:19:26,738 INFO L147 QuantifierPusher]: treesize reduction 22, result has 83.1 percent of original size 108 [2021-03-11 12:19:26,793 INFO L142 QuantifierPusher]: treesize reduction 20, result has 80.4 percent of original size [2021-03-11 12:19:26,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:19:26,807 INFO L142 QuantifierPusher]: treesize reduction 20, result has 80.0 percent of original size [2021-03-11 12:19:26,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:19:26,870 INFO L142 QuantifierPusher]: treesize reduction 51, result has 72.9 percent of original size [2021-03-11 12:19:26,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-03-11 12:19:26,955 INFO L142 QuantifierPusher]: treesize reduction 32, result has 44.8 percent of original size [2021-03-11 12:19:26,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:19:26,977 INFO L142 QuantifierPusher]: treesize reduction 39, result has 39.1 percent of original size [2021-03-11 12:19:26,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 12:19:27,064 INFO L142 QuantifierPusher]: treesize reduction 54, result has 36.5 percent of original size [2021-03-11 12:19:27,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:19:27,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:19:27,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:19:27,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:27,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:27,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975958520] [2021-03-11 12:19:27,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:27,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:19:27,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785993196] [2021-03-11 12:19:27,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:19:27,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:27,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:19:27,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:19:27,121 INFO L87 Difference]: Start difference. First operand 12372 states and 41097 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:28,586 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2021-03-11 12:19:29,528 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-03-11 12:19:29,952 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2021-03-11 12:19:30,112 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-03-11 12:19:30,485 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-03-11 12:19:30,628 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-11 12:19:30,780 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-03-11 12:19:30,988 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-03-11 12:19:31,312 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-03-11 12:19:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:31,653 INFO L93 Difference]: Finished difference Result 13690 states and 45099 transitions. [2021-03-11 12:19:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:19:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:31,674 INFO L225 Difference]: With dead ends: 13690 [2021-03-11 12:19:31,675 INFO L226 Difference]: Without dead ends: 13690 [2021-03-11 12:19:31,675 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3117.5ms TimeCoverageRelationStatistics Valid=508, Invalid=1132, Unknown=0, NotChecked=0, Total=1640 [2021-03-11 12:19:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2021-03-11 12:19:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 12492. [2021-03-11 12:19:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12492 states, 12488 states have (on average 3.3229500320307497) internal successors, (41497), 12491 states have internal predecessors, (41497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12492 states to 12492 states and 41497 transitions. [2021-03-11 12:19:31,832 INFO L78 Accepts]: Start accepts. Automaton has 12492 states and 41497 transitions. Word has length 31 [2021-03-11 12:19:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:31,832 INFO L480 AbstractCegarLoop]: Abstraction has 12492 states and 41497 transitions. [2021-03-11 12:19:31,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12492 states and 41497 transitions. [2021-03-11 12:19:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:31,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:31,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:31,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 12:19:31,843 INFO L428 AbstractCegarLoop]: === Iteration 101 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:31,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:31,844 INFO L82 PathProgramCache]: Analyzing trace with hash 948919669, now seen corresponding path program 50 times [2021-03-11 12:19:31,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:31,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679316993] [2021-03-11 12:19:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:31,873 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:19:31,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:19:31,883 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:19:31,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:19:31,897 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:19:31,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:31,910 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:19:31,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:31,926 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:19:31,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:31,943 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:19:31,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:31,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:19:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:19:31,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:19:31,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:19:32,003 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:19:32,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:32,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-11 12:19:32,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:19:32,039 INFO L142 QuantifierPusher]: treesize reduction 66, result has 45.5 percent of original size [2021-03-11 12:19:32,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:32,083 INFO L142 QuantifierPusher]: treesize reduction 102, result has 48.5 percent of original size [2021-03-11 12:19:32,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:19:32,138 INFO L142 QuantifierPusher]: treesize reduction 90, result has 57.5 percent of original size [2021-03-11 12:19:32,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:19:32,208 INFO L142 QuantifierPusher]: treesize reduction 81, result has 60.7 percent of original size [2021-03-11 12:19:32,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:19:32,230 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.1 percent of original size [2021-03-11 12:19:32,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:19:32,258 INFO L142 QuantifierPusher]: treesize reduction 30, result has 55.2 percent of original size [2021-03-11 12:19:32,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:32,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:32,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:19:32,303 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:19:32,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:19:32,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:32,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:32,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:32,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:32,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679316993] [2021-03-11 12:19:32,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:32,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:19:32,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875396628] [2021-03-11 12:19:32,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:19:32,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:19:32,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:19:32,333 INFO L87 Difference]: Start difference. First operand 12492 states and 41497 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:34,112 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-03-11 12:19:34,512 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-11 12:19:34,654 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-03-11 12:19:35,102 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-03-11 12:19:35,597 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2021-03-11 12:19:36,012 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2021-03-11 12:19:36,355 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-03-11 12:19:36,583 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:19:36,798 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-03-11 12:19:36,952 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:19:37,167 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-11 12:19:37,340 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2021-03-11 12:19:37,629 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-03-11 12:19:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:37,857 INFO L93 Difference]: Finished difference Result 14352 states and 47067 transitions. [2021-03-11 12:19:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 12:19:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:37,879 INFO L225 Difference]: With dead ends: 14352 [2021-03-11 12:19:37,879 INFO L226 Difference]: Without dead ends: 14352 [2021-03-11 12:19:37,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3736.0ms TimeCoverageRelationStatistics Valid=740, Invalid=1710, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 12:19:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14352 states. [2021-03-11 12:19:38,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14352 to 12297. [2021-03-11 12:19:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12297 states, 12293 states have (on average 3.324656308468234) internal successors, (40870), 12296 states have internal predecessors, (40870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12297 states to 12297 states and 40870 transitions. [2021-03-11 12:19:38,039 INFO L78 Accepts]: Start accepts. Automaton has 12297 states and 40870 transitions. Word has length 31 [2021-03-11 12:19:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:38,039 INFO L480 AbstractCegarLoop]: Abstraction has 12297 states and 40870 transitions. [2021-03-11 12:19:38,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 12297 states and 40870 transitions. [2021-03-11 12:19:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:38,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:38,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:38,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 12:19:38,050 INFO L428 AbstractCegarLoop]: === Iteration 102 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:38,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1580923499, now seen corresponding path program 51 times [2021-03-11 12:19:38,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:38,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096171237] [2021-03-11 12:19:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:38,077 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:19:38,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:38,086 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:19:38,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:19:38,104 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:19:38,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:19:38,119 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:19:38,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:19:38,150 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:19:38,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:38,185 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:19:38,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:38,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.7 percent of original size [2021-03-11 12:19:38,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:38,259 INFO L142 QuantifierPusher]: treesize reduction 23, result has 75.8 percent of original size [2021-03-11 12:19:38,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:19:38,309 INFO L142 QuantifierPusher]: treesize reduction 19, result has 79.3 percent of original size [2021-03-11 12:19:38,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:19:38,321 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.2 percent of original size [2021-03-11 12:19:38,321 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.9 percent of original size 79 [2021-03-11 12:19:38,379 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.2 percent of original size [2021-03-11 12:19:38,380 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.9 percent of original size 79 [2021-03-11 12:19:38,438 INFO L142 QuantifierPusher]: treesize reduction 64, result has 64.8 percent of original size [2021-03-11 12:19:38,439 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.1 percent of original size 111 [2021-03-11 12:19:38,513 INFO L142 QuantifierPusher]: treesize reduction 66, result has 64.7 percent of original size [2021-03-11 12:19:38,513 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.2 percent of original size 114 [2021-03-11 12:19:38,591 INFO L142 QuantifierPusher]: treesize reduction 64, result has 64.6 percent of original size [2021-03-11 12:19:38,592 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:19:38,669 INFO L142 QuantifierPusher]: treesize reduction 69, result has 61.9 percent of original size [2021-03-11 12:19:38,670 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.8 percent of original size 105 [2021-03-11 12:19:38,747 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.4 percent of original size [2021-03-11 12:19:38,747 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size 44 [2021-03-11 12:19:38,795 INFO L142 QuantifierPusher]: treesize reduction 42, result has 71.0 percent of original size [2021-03-11 12:19:38,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:19:38,883 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-03-11 12:19:38,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:19:38,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:38,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:19:38,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:19:38,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:38,973 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:19:38,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:19:38,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:19:38,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:19:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:39,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096171237] [2021-03-11 12:19:39,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:39,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-03-11 12:19:39,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557015696] [2021-03-11 12:19:39,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-11 12:19:39,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-11 12:19:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-03-11 12:19:39,022 INFO L87 Difference]: Start difference. First operand 12297 states and 40870 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:40,464 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2021-03-11 12:19:40,754 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:19:41,141 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-11 12:19:41,752 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-11 12:19:42,071 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2021-03-11 12:19:42,322 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:19:42,715 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-03-11 12:19:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:44,080 INFO L93 Difference]: Finished difference Result 14949 states and 49443 transitions. [2021-03-11 12:19:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:19:44,081 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:44,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:44,104 INFO L225 Difference]: With dead ends: 14949 [2021-03-11 12:19:44,105 INFO L226 Difference]: Without dead ends: 14949 [2021-03-11 12:19:44,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2823.4ms TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:19:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14949 states. [2021-03-11 12:19:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14949 to 12543. [2021-03-11 12:19:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12543 states, 12539 states have (on average 3.3260228088364303) internal successors, (41705), 12542 states have internal predecessors, (41705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12543 states to 12543 states and 41705 transitions. [2021-03-11 12:19:44,303 INFO L78 Accepts]: Start accepts. Automaton has 12543 states and 41705 transitions. Word has length 31 [2021-03-11 12:19:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:44,303 INFO L480 AbstractCegarLoop]: Abstraction has 12543 states and 41705 transitions. [2021-03-11 12:19:44,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12543 states and 41705 transitions. [2021-03-11 12:19:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:44,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:44,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:44,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 12:19:44,315 INFO L428 AbstractCegarLoop]: === Iteration 103 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1580923500, now seen corresponding path program 3 times [2021-03-11 12:19:44,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:44,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244344059] [2021-03-11 12:19:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:44,342 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:19:44,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:19:44,351 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:19:44,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:19:44,365 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:19:44,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:19:44,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:19:44,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:19:44,404 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:19:44,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:44,435 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:19:44,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:44,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.7 percent of original size [2021-03-11 12:19:44,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:19:44,499 INFO L142 QuantifierPusher]: treesize reduction 23, result has 75.8 percent of original size [2021-03-11 12:19:44,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:19:44,546 INFO L142 QuantifierPusher]: treesize reduction 19, result has 79.3 percent of original size [2021-03-11 12:19:44,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:19:44,558 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.2 percent of original size [2021-03-11 12:19:44,558 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.9 percent of original size 79 [2021-03-11 12:19:44,618 INFO L142 QuantifierPusher]: treesize reduction 50, result has 63.2 percent of original size [2021-03-11 12:19:44,618 INFO L147 QuantifierPusher]: treesize reduction 7, result has 91.9 percent of original size 79 [2021-03-11 12:19:44,678 INFO L142 QuantifierPusher]: treesize reduction 64, result has 64.8 percent of original size [2021-03-11 12:19:44,679 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.1 percent of original size 111 [2021-03-11 12:19:44,755 INFO L142 QuantifierPusher]: treesize reduction 66, result has 64.7 percent of original size [2021-03-11 12:19:44,755 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.2 percent of original size 114 [2021-03-11 12:19:44,835 INFO L142 QuantifierPusher]: treesize reduction 64, result has 64.6 percent of original size [2021-03-11 12:19:44,836 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:19:44,917 INFO L142 QuantifierPusher]: treesize reduction 69, result has 61.9 percent of original size [2021-03-11 12:19:44,918 INFO L147 QuantifierPusher]: treesize reduction 7, result has 93.8 percent of original size 105 [2021-03-11 12:19:44,996 INFO L142 QuantifierPusher]: treesize reduction 41, result has 55.4 percent of original size [2021-03-11 12:19:44,997 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.3 percent of original size 44 [2021-03-11 12:19:45,046 INFO L142 QuantifierPusher]: treesize reduction 42, result has 71.0 percent of original size [2021-03-11 12:19:45,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:19:45,142 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.8 percent of original size [2021-03-11 12:19:45,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:19:45,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:45,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:19:45,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:19:45,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:45,240 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:19:45,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:19:45,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:19:45,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:19:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:45,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244344059] [2021-03-11 12:19:45,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:45,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-03-11 12:19:45,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204642112] [2021-03-11 12:19:45,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-03-11 12:19:45,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-03-11 12:19:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-03-11 12:19:45,293 INFO L87 Difference]: Start difference. First operand 12543 states and 41705 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:46,911 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2021-03-11 12:19:47,235 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:19:47,671 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-11 12:19:48,158 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-03-11 12:19:48,342 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-11 12:19:48,694 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2021-03-11 12:19:48,960 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:19:49,392 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-03-11 12:19:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:51,032 INFO L93 Difference]: Finished difference Result 14882 states and 49225 transitions. [2021-03-11 12:19:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:19:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:51,057 INFO L225 Difference]: With dead ends: 14882 [2021-03-11 12:19:51,057 INFO L226 Difference]: Without dead ends: 14882 [2021-03-11 12:19:51,057 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2887.6ms TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:19:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14882 states. [2021-03-11 12:19:51,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14882 to 12409. [2021-03-11 12:19:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12409 states, 12405 states have (on average 3.3220475614671505) internal successors, (41210), 12408 states have internal predecessors, (41210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12409 states to 12409 states and 41210 transitions. [2021-03-11 12:19:51,232 INFO L78 Accepts]: Start accepts. Automaton has 12409 states and 41210 transitions. Word has length 31 [2021-03-11 12:19:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:51,232 INFO L480 AbstractCegarLoop]: Abstraction has 12409 states and 41210 transitions. [2021-03-11 12:19:51,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 12409 states and 41210 transitions. [2021-03-11 12:19:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:51,244 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:51,244 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:51,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 12:19:51,244 INFO L428 AbstractCegarLoop]: === Iteration 104 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:51,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1592816419, now seen corresponding path program 52 times [2021-03-11 12:19:51,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:51,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613581738] [2021-03-11 12:19:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:51,281 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:19:51,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:19:51,297 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:19:51,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:19:51,321 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:19:51,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:19:51,343 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:51,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:51,370 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:51,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:51,399 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:19:51,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:19:51,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:19:51,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:19:51,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.9 percent of original size [2021-03-11 12:19:51,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:19:51,501 INFO L142 QuantifierPusher]: treesize reduction 24, result has 71.1 percent of original size [2021-03-11 12:19:51,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:19:51,513 INFO L142 QuantifierPusher]: treesize reduction 53, result has 54.3 percent of original size [2021-03-11 12:19:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:19:51,558 INFO L142 QuantifierPusher]: treesize reduction 53, result has 54.3 percent of original size [2021-03-11 12:19:51,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:19:51,605 INFO L142 QuantifierPusher]: treesize reduction 114, result has 50.0 percent of original size [2021-03-11 12:19:51,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:19:51,663 INFO L142 QuantifierPusher]: treesize reduction 263, result has 58.9 percent of original size [2021-03-11 12:19:51,664 INFO L147 QuantifierPusher]: treesize reduction 52, result has 86.2 percent of original size 325 [2021-03-11 12:19:51,751 INFO L142 QuantifierPusher]: treesize reduction 117, result has 53.0 percent of original size [2021-03-11 12:19:51,752 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.0 percent of original size 128 [2021-03-11 12:19:51,827 INFO L142 QuantifierPusher]: treesize reduction 138, result has 50.7 percent of original size [2021-03-11 12:19:51,828 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 139 [2021-03-11 12:19:51,909 INFO L142 QuantifierPusher]: treesize reduction 41, result has 47.4 percent of original size [2021-03-11 12:19:51,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:51,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:51,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:19:51,958 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:19:51,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:19:51,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:51,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:51,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:51,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:51,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613581738] [2021-03-11 12:19:51,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:51,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:19:51,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222729533] [2021-03-11 12:19:51,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:19:51,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:51,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:19:51,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:19:51,994 INFO L87 Difference]: Start difference. First operand 12409 states and 41210 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:53,035 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-03-11 12:19:53,550 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-11 12:19:53,818 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-03-11 12:19:54,223 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-03-11 12:19:55,188 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 63 [2021-03-11 12:19:55,408 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-11 12:19:55,621 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2021-03-11 12:19:55,897 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-03-11 12:19:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:19:56,054 INFO L93 Difference]: Finished difference Result 13811 states and 45422 transitions. [2021-03-11 12:19:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:19:56,056 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:19:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:19:56,077 INFO L225 Difference]: With dead ends: 13811 [2021-03-11 12:19:56,077 INFO L226 Difference]: Without dead ends: 13811 [2021-03-11 12:19:56,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2950.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:19:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13811 states. [2021-03-11 12:19:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13811 to 12357. [2021-03-11 12:19:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 12353 states have (on average 3.323079413907553) internal successors, (41050), 12356 states have internal predecessors, (41050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 41050 transitions. [2021-03-11 12:19:56,236 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 41050 transitions. Word has length 31 [2021-03-11 12:19:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:19:56,236 INFO L480 AbstractCegarLoop]: Abstraction has 12357 states and 41050 transitions. [2021-03-11 12:19:56,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 41050 transitions. [2021-03-11 12:19:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:19:56,247 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:19:56,247 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:19:56,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 12:19:56,247 INFO L428 AbstractCegarLoop]: === Iteration 105 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:19:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:19:56,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1768716309, now seen corresponding path program 53 times [2021-03-11 12:19:56,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:19:56,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101481129] [2021-03-11 12:19:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:19:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:19:56,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:19:56,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:19:56,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:19:56,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:56,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:56,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:56,395 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:19:56,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:19:56,425 INFO L142 QuantifierPusher]: treesize reduction 23, result has 70.5 percent of original size [2021-03-11 12:19:56,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:56,461 INFO L142 QuantifierPusher]: treesize reduction 23, result has 70.5 percent of original size [2021-03-11 12:19:56,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:19:56,500 INFO L142 QuantifierPusher]: treesize reduction 57, result has 66.5 percent of original size [2021-03-11 12:19:56,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:19:56,565 INFO L142 QuantifierPusher]: treesize reduction 57, result has 67.1 percent of original size [2021-03-11 12:19:56,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:19:56,634 INFO L142 QuantifierPusher]: treesize reduction 57, result has 66.5 percent of original size [2021-03-11 12:19:56,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:19:56,700 INFO L142 QuantifierPusher]: treesize reduction 77, result has 60.3 percent of original size [2021-03-11 12:19:56,701 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:19:56,778 INFO L142 QuantifierPusher]: treesize reduction 75, result has 64.1 percent of original size [2021-03-11 12:19:56,779 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-03-11 12:19:56,861 INFO L142 QuantifierPusher]: treesize reduction 49, result has 46.7 percent of original size [2021-03-11 12:19:56,862 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:19:56,909 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:19:56,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:19:56,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:19:56,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:19:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:19:56,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101481129] [2021-03-11 12:19:56,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:19:56,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:19:56,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268651644] [2021-03-11 12:19:56,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:19:56,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:19:56,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:19:56,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:19:56,933 INFO L87 Difference]: Start difference. First operand 12357 states and 41050 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:19:58,014 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-03-11 12:19:58,230 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-03-11 12:19:58,500 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-11 12:19:59,305 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2021-03-11 12:19:59,491 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-03-11 12:19:59,716 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-03-11 12:19:59,861 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-11 12:20:00,019 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-03-11 12:20:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:00,169 INFO L93 Difference]: Finished difference Result 13196 states and 43587 transitions. [2021-03-11 12:20:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:20:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:00,191 INFO L225 Difference]: With dead ends: 13196 [2021-03-11 12:20:00,191 INFO L226 Difference]: Without dead ends: 13196 [2021-03-11 12:20:00,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2428.4ms TimeCoverageRelationStatistics Valid=367, Invalid=893, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:20:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13196 states. [2021-03-11 12:20:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13196 to 12364. [2021-03-11 12:20:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12364 states, 12360 states have (on average 3.32289644012945) internal successors, (41071), 12363 states have internal predecessors, (41071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12364 states to 12364 states and 41071 transitions. [2021-03-11 12:20:00,352 INFO L78 Accepts]: Start accepts. Automaton has 12364 states and 41071 transitions. Word has length 31 [2021-03-11 12:20:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:00,352 INFO L480 AbstractCegarLoop]: Abstraction has 12364 states and 41071 transitions. [2021-03-11 12:20:00,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12364 states and 41071 transitions. [2021-03-11 12:20:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:00,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:00,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:00,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 12:20:00,364 INFO L428 AbstractCegarLoop]: === Iteration 106 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:00,364 INFO L82 PathProgramCache]: Analyzing trace with hash 331390129, now seen corresponding path program 54 times [2021-03-11 12:20:00,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:00,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558091991] [2021-03-11 12:20:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:00,395 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:20:00,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:20:00,411 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:20:00,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:20:00,435 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:20:00,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:20:00,458 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:20:00,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:20:00,486 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:20:00,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:20:00,515 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:20:00,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:20:00,546 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:20:00,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:20:00,577 INFO L142 QuantifierPusher]: treesize reduction 32, result has 72.9 percent of original size [2021-03-11 12:20:00,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-11 12:20:00,631 INFO L142 QuantifierPusher]: treesize reduction 32, result has 72.9 percent of original size [2021-03-11 12:20:00,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-11 12:20:00,686 INFO L142 QuantifierPusher]: treesize reduction 70, result has 67.1 percent of original size [2021-03-11 12:20:00,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-03-11 12:20:00,771 INFO L142 QuantifierPusher]: treesize reduction 418, result has 32.3 percent of original size [2021-03-11 12:20:00,772 INFO L147 QuantifierPusher]: treesize reduction 22, result has 88.9 percent of original size 177 [2021-03-11 12:20:00,867 INFO L142 QuantifierPusher]: treesize reduction 74, result has 67.8 percent of original size [2021-03-11 12:20:00,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-03-11 12:20:00,964 INFO L142 QuantifierPusher]: treesize reduction 104, result has 60.3 percent of original size [2021-03-11 12:20:00,965 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.6 percent of original size 151 [2021-03-11 12:20:01,120 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2021-03-11 12:20:01,121 INFO L142 QuantifierPusher]: treesize reduction 70, result has 42.6 percent of original size [2021-03-11 12:20:01,121 INFO L147 QuantifierPusher]: treesize reduction 7, result has 86.5 percent of original size 45 [2021-03-11 12:20:01,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:01,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:20:01,194 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:20:01,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:01,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:01,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:01,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:01,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558091991] [2021-03-11 12:20:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:20:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427010040] [2021-03-11 12:20:01,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:20:01,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:20:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:20:01,225 INFO L87 Difference]: Start difference. First operand 12364 states and 41071 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:02,879 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2021-03-11 12:20:03,161 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2021-03-11 12:20:03,588 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-03-11 12:20:04,793 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-03-11 12:20:05,043 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-11 12:20:05,282 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-03-11 12:20:05,584 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2021-03-11 12:20:05,773 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-03-11 12:20:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:05,965 INFO L93 Difference]: Finished difference Result 13854 states and 45551 transitions. [2021-03-11 12:20:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-03-11 12:20:05,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:05,988 INFO L225 Difference]: With dead ends: 13854 [2021-03-11 12:20:05,988 INFO L226 Difference]: Without dead ends: 13854 [2021-03-11 12:20:05,989 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3175.3ms TimeCoverageRelationStatistics Valid=513, Invalid=1209, Unknown=0, NotChecked=0, Total=1722 [2021-03-11 12:20:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13854 states. [2021-03-11 12:20:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13854 to 12347. [2021-03-11 12:20:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12347 states, 12343 states have (on average 3.323341165032812) internal successors, (41020), 12346 states have internal predecessors, (41020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12347 states to 12347 states and 41020 transitions. [2021-03-11 12:20:06,178 INFO L78 Accepts]: Start accepts. Automaton has 12347 states and 41020 transitions. Word has length 31 [2021-03-11 12:20:06,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:06,178 INFO L480 AbstractCegarLoop]: Abstraction has 12347 states and 41020 transitions. [2021-03-11 12:20:06,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 12347 states and 41020 transitions. [2021-03-11 12:20:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:06,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:06,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:06,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 12:20:06,189 INFO L428 AbstractCegarLoop]: === Iteration 107 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1288583765, now seen corresponding path program 55 times [2021-03-11 12:20:06,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:06,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134010103] [2021-03-11 12:20:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:06,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:06,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:06,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:06,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:06,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:06,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:06,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:20:06,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:06,393 INFO L142 QuantifierPusher]: treesize reduction 27, result has 63.0 percent of original size [2021-03-11 12:20:06,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:06,432 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:20:06,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:06,433 INFO L142 QuantifierPusher]: treesize reduction 25, result has 64.8 percent of original size [2021-03-11 12:20:06,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:06,478 INFO L142 QuantifierPusher]: treesize reduction 25, result has 64.8 percent of original size [2021-03-11 12:20:06,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:06,524 INFO L142 QuantifierPusher]: treesize reduction 50, result has 70.4 percent of original size [2021-03-11 12:20:06,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-11 12:20:06,588 INFO L142 QuantifierPusher]: treesize reduction 40, result has 74.4 percent of original size [2021-03-11 12:20:06,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:20:06,611 INFO L142 QuantifierPusher]: treesize reduction 40, result has 73.7 percent of original size [2021-03-11 12:20:06,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:20:06,633 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.0 percent of original size [2021-03-11 12:20:06,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:20:06,703 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:20:06,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:20:06,739 INFO L142 QuantifierPusher]: treesize reduction 49, result has 41.7 percent of original size [2021-03-11 12:20:06,739 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:20:06,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:20:06,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:20:06,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:06,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:06,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134010103] [2021-03-11 12:20:06,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:06,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:20:06,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316867999] [2021-03-11 12:20:06,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:20:06,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:06,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:20:06,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:20:06,805 INFO L87 Difference]: Start difference. First operand 12347 states and 41020 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:08,049 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-03-11 12:20:09,187 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2021-03-11 12:20:09,423 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-03-11 12:20:09,577 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:20:09,947 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-03-11 12:20:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:10,269 INFO L93 Difference]: Finished difference Result 13098 states and 43281 transitions. [2021-03-11 12:20:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 12:20:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:10,291 INFO L225 Difference]: With dead ends: 13098 [2021-03-11 12:20:10,291 INFO L226 Difference]: Without dead ends: 13098 [2021-03-11 12:20:10,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2249.5ms TimeCoverageRelationStatistics Valid=309, Invalid=813, Unknown=0, NotChecked=0, Total=1122 [2021-03-11 12:20:10,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13098 states. [2021-03-11 12:20:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13098 to 12362. [2021-03-11 12:20:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12362 states, 12358 states have (on average 3.323110535685386) internal successors, (41067), 12361 states have internal predecessors, (41067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12362 states to 12362 states and 41067 transitions. [2021-03-11 12:20:10,512 INFO L78 Accepts]: Start accepts. Automaton has 12362 states and 41067 transitions. Word has length 31 [2021-03-11 12:20:10,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:10,512 INFO L480 AbstractCegarLoop]: Abstraction has 12362 states and 41067 transitions. [2021-03-11 12:20:10,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12362 states and 41067 transitions. [2021-03-11 12:20:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:10,523 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:10,524 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:10,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 12:20:10,524 INFO L428 AbstractCegarLoop]: === Iteration 108 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1550577763, now seen corresponding path program 56 times [2021-03-11 12:20:10,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:10,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696360361] [2021-03-11 12:20:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:10,552 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:20:10,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:10,562 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:20:10,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:10,576 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:20:10,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:10,589 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:10,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:10,617 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:10,646 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:10,675 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:20:10,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:10,707 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:20:10,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:20:10,744 INFO L142 QuantifierPusher]: treesize reduction 15, result has 80.8 percent of original size [2021-03-11 12:20:10,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:20:10,756 INFO L142 QuantifierPusher]: treesize reduction 28, result has 71.1 percent of original size [2021-03-11 12:20:10,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:20:10,809 INFO L142 QuantifierPusher]: treesize reduction 28, result has 71.1 percent of original size [2021-03-11 12:20:10,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:20:10,864 INFO L142 QuantifierPusher]: treesize reduction 69, result has 62.1 percent of original size [2021-03-11 12:20:10,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:20:10,938 INFO L142 QuantifierPusher]: treesize reduction 54, result has 69.7 percent of original size [2021-03-11 12:20:10,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:20:11,018 INFO L142 QuantifierPusher]: treesize reduction 54, result has 70.2 percent of original size [2021-03-11 12:20:11,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:20:11,042 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.7 percent of original size [2021-03-11 12:20:11,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:11,071 INFO L142 QuantifierPusher]: treesize reduction 34, result has 49.3 percent of original size [2021-03-11 12:20:11,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:20:11,099 INFO L142 QuantifierPusher]: treesize reduction 37, result has 40.3 percent of original size [2021-03-11 12:20:11,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 12:20:11,128 INFO L142 QuantifierPusher]: treesize reduction 14, result has 39.1 percent of original size [2021-03-11 12:20:11,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 12:20:11,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:11,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:11,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696360361] [2021-03-11 12:20:11,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:11,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:20:11,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356775497] [2021-03-11 12:20:11,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:20:11,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:11,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:20:11,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:20:11,151 INFO L87 Difference]: Start difference. First operand 12362 states and 41067 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:12,367 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-03-11 12:20:12,694 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-03-11 12:20:13,008 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-03-11 12:20:14,099 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-03-11 12:20:14,283 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-03-11 12:20:14,532 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2021-03-11 12:20:14,728 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-03-11 12:20:15,000 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-03-11 12:20:15,155 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-11 12:20:15,390 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-03-11 12:20:15,693 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-11 12:20:15,929 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-03-11 12:20:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:16,125 INFO L93 Difference]: Finished difference Result 13352 states and 44085 transitions. [2021-03-11 12:20:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:20:16,126 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:16,149 INFO L225 Difference]: With dead ends: 13352 [2021-03-11 12:20:16,149 INFO L226 Difference]: Without dead ends: 13352 [2021-03-11 12:20:16,149 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3372.2ms TimeCoverageRelationStatistics Valid=450, Invalid=1110, Unknown=0, NotChecked=0, Total=1560 [2021-03-11 12:20:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13352 states. [2021-03-11 12:20:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13352 to 12422. [2021-03-11 12:20:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12422 states, 12418 states have (on average 3.3231599291351266) internal successors, (41267), 12421 states have internal predecessors, (41267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12422 states to 12422 states and 41267 transitions. [2021-03-11 12:20:16,322 INFO L78 Accepts]: Start accepts. Automaton has 12422 states and 41267 transitions. Word has length 31 [2021-03-11 12:20:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:16,322 INFO L480 AbstractCegarLoop]: Abstraction has 12422 states and 41267 transitions. [2021-03-11 12:20:16,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12422 states and 41267 transitions. [2021-03-11 12:20:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:16,334 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:16,334 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:16,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 12:20:16,334 INFO L428 AbstractCegarLoop]: === Iteration 109 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:16,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1029462161, now seen corresponding path program 57 times [2021-03-11 12:20:16,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:16,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390700431] [2021-03-11 12:20:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:16,423 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:20:16,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:20:16,453 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.7 percent of original size [2021-03-11 12:20:16,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:20:16,482 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.1 percent of original size [2021-03-11 12:20:16,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:20:16,509 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-03-11 12:20:16,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:16,543 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-03-11 12:20:16,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:16,573 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-03-11 12:20:16,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:16,603 INFO L142 QuantifierPusher]: treesize reduction 21, result has 66.1 percent of original size [2021-03-11 12:20:16,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:16,635 INFO L142 QuantifierPusher]: treesize reduction 30, result has 62.5 percent of original size [2021-03-11 12:20:16,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:20:16,674 INFO L142 QuantifierPusher]: treesize reduction 21, result has 66.1 percent of original size [2021-03-11 12:20:16,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:16,675 INFO L142 QuantifierPusher]: treesize reduction 24, result has 75.5 percent of original size [2021-03-11 12:20:16,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:20:16,732 INFO L142 QuantifierPusher]: treesize reduction 24, result has 75.5 percent of original size [2021-03-11 12:20:16,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:20:16,793 INFO L142 QuantifierPusher]: treesize reduction 84, result has 60.2 percent of original size [2021-03-11 12:20:16,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:20:16,886 INFO L142 QuantifierPusher]: treesize reduction 49, result has 78.2 percent of original size [2021-03-11 12:20:16,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-03-11 12:20:16,989 INFO L142 QuantifierPusher]: treesize reduction 59, result has 71.4 percent of original size [2021-03-11 12:20:16,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-03-11 12:20:17,014 INFO L142 QuantifierPusher]: treesize reduction 20, result has 68.3 percent of original size [2021-03-11 12:20:17,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:20:17,055 INFO L142 QuantifierPusher]: treesize reduction 42, result has 48.8 percent of original size [2021-03-11 12:20:17,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:20:17,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:17,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:20:17,119 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:20:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:17,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:17,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:17,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:17,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:17,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390700431] [2021-03-11 12:20:17,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:17,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:20:17,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044370841] [2021-03-11 12:20:17,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:20:17,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:20:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:20:17,152 INFO L87 Difference]: Start difference. First operand 12422 states and 41267 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:18,961 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-11 12:20:19,296 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-11 12:20:19,936 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 61 [2021-03-11 12:20:21,229 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-03-11 12:20:21,466 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-03-11 12:20:21,764 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-03-11 12:20:22,044 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-03-11 12:20:22,518 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-03-11 12:20:22,743 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-03-11 12:20:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:22,934 INFO L93 Difference]: Finished difference Result 13942 states and 45837 transitions. [2021-03-11 12:20:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:20:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:22,956 INFO L225 Difference]: With dead ends: 13942 [2021-03-11 12:20:22,956 INFO L226 Difference]: Without dead ends: 13942 [2021-03-11 12:20:22,957 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 3644.2ms TimeCoverageRelationStatistics Valid=612, Invalid=1458, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:20:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13942 states. [2021-03-11 12:20:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13942 to 12317. [2021-03-11 12:20:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12317 states, 12313 states have (on average 3.3241289693819542) internal successors, (40930), 12316 states have internal predecessors, (40930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12317 states to 12317 states and 40930 transitions. [2021-03-11 12:20:23,117 INFO L78 Accepts]: Start accepts. Automaton has 12317 states and 40930 transitions. Word has length 31 [2021-03-11 12:20:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:23,117 INFO L480 AbstractCegarLoop]: Abstraction has 12317 states and 40930 transitions. [2021-03-11 12:20:23,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 12317 states and 40930 transitions. [2021-03-11 12:20:23,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:23,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:23,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:23,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 12:20:23,129 INFO L428 AbstractCegarLoop]: === Iteration 110 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:23,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:23,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2004848725, now seen corresponding path program 58 times [2021-03-11 12:20:23,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:23,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890402084] [2021-03-11 12:20:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:23,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:23,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:23,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:23,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:23,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:23,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:20:23,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:23,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:20:23,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:20:23,367 INFO L142 QuantifierPusher]: treesize reduction 27, result has 60.3 percent of original size [2021-03-11 12:20:23,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:23,368 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 12:20:23,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:20:23,420 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 12:20:23,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:20:23,462 INFO L142 QuantifierPusher]: treesize reduction 62, result has 47.0 percent of original size [2021-03-11 12:20:23,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:20:23,509 INFO L142 QuantifierPusher]: treesize reduction 13, result has 66.7 percent of original size [2021-03-11 12:20:23,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-11 12:20:23,534 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.0 percent of original size [2021-03-11 12:20:23,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:23,562 INFO L142 QuantifierPusher]: treesize reduction 33, result has 48.4 percent of original size [2021-03-11 12:20:23,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:20:23,592 INFO L142 QuantifierPusher]: treesize reduction 19, result has 61.2 percent of original size [2021-03-11 12:20:23,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:23,621 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:20:23,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:20:23,654 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:20:23,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:20:23,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:23,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890402084] [2021-03-11 12:20:23,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:23,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:20:23,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788457698] [2021-03-11 12:20:23,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:20:23,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:20:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:20:23,683 INFO L87 Difference]: Start difference. First operand 12317 states and 40930 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:25,878 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-03-11 12:20:26,005 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-03-11 12:20:26,208 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-03-11 12:20:26,433 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-03-11 12:20:26,854 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2021-03-11 12:20:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:27,233 INFO L93 Difference]: Finished difference Result 13118 states and 43345 transitions. [2021-03-11 12:20:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 12:20:27,235 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:27,255 INFO L225 Difference]: With dead ends: 13118 [2021-03-11 12:20:27,256 INFO L226 Difference]: Without dead ends: 13118 [2021-03-11 12:20:27,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2341.2ms TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:20:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13118 states. [2021-03-11 12:20:27,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13118 to 12332. [2021-03-11 12:20:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12332 states, 12328 states have (on average 3.3240590525632707) internal successors, (40979), 12331 states have internal predecessors, (40979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12332 states to 12332 states and 40979 transitions. [2021-03-11 12:20:27,418 INFO L78 Accepts]: Start accepts. Automaton has 12332 states and 40979 transitions. Word has length 31 [2021-03-11 12:20:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:27,418 INFO L480 AbstractCegarLoop]: Abstraction has 12332 states and 40979 transitions. [2021-03-11 12:20:27,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12332 states and 40979 transitions. [2021-03-11 12:20:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:27,430 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:27,430 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:27,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 12:20:27,430 INFO L428 AbstractCegarLoop]: === Iteration 111 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:27,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1334728205, now seen corresponding path program 59 times [2021-03-11 12:20:27,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:27,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348131644] [2021-03-11 12:20:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:27,457 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:20:27,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:27,467 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.8 percent of original size [2021-03-11 12:20:27,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:20:27,492 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.2 percent of original size [2021-03-11 12:20:27,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:20:27,515 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:27,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:27,545 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:27,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:27,577 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:27,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:27,608 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:20:27,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:27,645 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:20:27,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:20:27,686 INFO L142 QuantifierPusher]: treesize reduction 33, result has 61.2 percent of original size [2021-03-11 12:20:27,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:27,698 INFO L142 QuantifierPusher]: treesize reduction 82, result has 46.1 percent of original size [2021-03-11 12:20:27,698 INFO L147 QuantifierPusher]: treesize reduction 5, result has 92.9 percent of original size 65 [2021-03-11 12:20:27,781 INFO L142 QuantifierPusher]: treesize reduction 87, result has 42.8 percent of original size [2021-03-11 12:20:27,782 INFO L147 QuantifierPusher]: treesize reduction 4, result has 93.8 percent of original size 61 [2021-03-11 12:20:27,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:27,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:20:27,875 INFO L142 QuantifierPusher]: treesize reduction 16, result has 71.4 percent of original size [2021-03-11 12:20:27,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:20:27,914 INFO L142 QuantifierPusher]: treesize reduction 26, result has 67.5 percent of original size [2021-03-11 12:20:27,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:20:27,958 INFO L142 QuantifierPusher]: treesize reduction 26, result has 68.7 percent of original size [2021-03-11 12:20:27,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-11 12:20:28,007 INFO L142 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size [2021-03-11 12:20:28,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:20:28,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:20:28,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:20:28,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:20:28,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:20:28,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:28,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:28,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348131644] [2021-03-11 12:20:28,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:28,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:20:28,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891761338] [2021-03-11 12:20:28,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:20:28,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:28,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:20:28,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:20:28,135 INFO L87 Difference]: Start difference. First operand 12332 states and 40979 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:29,627 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-03-11 12:20:31,008 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2021-03-11 12:20:31,197 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-11 12:20:31,641 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-03-11 12:20:31,806 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-03-11 12:20:31,976 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-03-11 12:20:32,111 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-03-11 12:20:32,342 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:20:32,519 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-11 12:20:32,875 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-03-11 12:20:33,067 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2021-03-11 12:20:33,231 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-03-11 12:20:33,397 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-03-11 12:20:33,664 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:20:33,870 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-11 12:20:34,186 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-11 12:20:34,393 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-03-11 12:20:34,885 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 78 [2021-03-11 12:20:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:35,180 INFO L93 Difference]: Finished difference Result 13438 states and 44345 transitions. [2021-03-11 12:20:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 12:20:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:35,203 INFO L225 Difference]: With dead ends: 13438 [2021-03-11 12:20:35,203 INFO L226 Difference]: Without dead ends: 13438 [2021-03-11 12:20:35,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 5035.6ms TimeCoverageRelationStatistics Valid=799, Invalid=1957, Unknown=0, NotChecked=0, Total=2756 [2021-03-11 12:20:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13438 states. [2021-03-11 12:20:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13438 to 12396. [2021-03-11 12:20:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12396 states, 12392 states have (on average 3.3239993544222077) internal successors, (41191), 12395 states have internal predecessors, (41191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12396 states to 12396 states and 41191 transitions. [2021-03-11 12:20:35,360 INFO L78 Accepts]: Start accepts. Automaton has 12396 states and 41191 transitions. Word has length 31 [2021-03-11 12:20:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:35,361 INFO L480 AbstractCegarLoop]: Abstraction has 12396 states and 41191 transitions. [2021-03-11 12:20:35,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:35,361 INFO L276 IsEmpty]: Start isEmpty. Operand 12396 states and 41191 transitions. [2021-03-11 12:20:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:35,372 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:35,372 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:35,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 12:20:35,372 INFO L428 AbstractCegarLoop]: === Iteration 112 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1253329149, now seen corresponding path program 60 times [2021-03-11 12:20:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:35,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550318218] [2021-03-11 12:20:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:35,399 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:20:35,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:35,409 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:20:35,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:35,425 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:20:35,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:35,443 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:35,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:35,482 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:35,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:35,521 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:20:35,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:35,559 INFO L142 QuantifierPusher]: treesize reduction 24, result has 63.1 percent of original size [2021-03-11 12:20:35,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:35,594 INFO L142 QuantifierPusher]: treesize reduction 24, result has 68.8 percent of original size [2021-03-11 12:20:35,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:20:35,635 INFO L142 QuantifierPusher]: treesize reduction 30, result has 63.4 percent of original size [2021-03-11 12:20:35,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:20:35,648 INFO L142 QuantifierPusher]: treesize reduction 46, result has 57.4 percent of original size [2021-03-11 12:20:35,648 INFO L147 QuantifierPusher]: treesize reduction 7, result has 88.7 percent of original size 55 [2021-03-11 12:20:35,705 INFO L142 QuantifierPusher]: treesize reduction 53, result has 50.9 percent of original size [2021-03-11 12:20:35,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:20:35,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:35,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:35,779 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.1 percent of original size [2021-03-11 12:20:35,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:35,806 INFO L142 QuantifierPusher]: treesize reduction 24, result has 57.9 percent of original size [2021-03-11 12:20:35,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:20:35,849 INFO L142 QuantifierPusher]: treesize reduction 23, result has 61.7 percent of original size [2021-03-11 12:20:35,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:20:35,901 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.6 percent of original size [2021-03-11 12:20:35,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:20:35,945 INFO L142 QuantifierPusher]: treesize reduction 36, result has 63.3 percent of original size [2021-03-11 12:20:35,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:20:35,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:20:35,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:20:36,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:36,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:36,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550318218] [2021-03-11 12:20:36,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:36,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:20:36,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881035681] [2021-03-11 12:20:36,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:20:36,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:36,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:20:36,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:20:36,027 INFO L87 Difference]: Start difference. First operand 12396 states and 41191 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:37,207 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-03-11 12:20:37,599 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-03-11 12:20:38,059 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-11 12:20:38,403 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2021-03-11 12:20:39,598 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2021-03-11 12:20:39,775 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-11 12:20:39,921 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-11 12:20:40,241 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-11 12:20:40,396 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2021-03-11 12:20:40,560 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-03-11 12:20:40,726 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-03-11 12:20:40,950 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 12:20:41,125 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-03-11 12:20:41,302 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 12:20:41,477 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-03-11 12:20:41,712 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:20:41,907 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-03-11 12:20:42,082 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-03-11 12:20:42,354 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2021-03-11 12:20:42,569 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2021-03-11 12:20:42,774 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2021-03-11 12:20:43,098 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2021-03-11 12:20:43,313 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-11 12:20:43,829 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2021-03-11 12:20:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:44,176 INFO L93 Difference]: Finished difference Result 13418 states and 44285 transitions. [2021-03-11 12:20:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-11 12:20:44,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:44,196 INFO L225 Difference]: With dead ends: 13418 [2021-03-11 12:20:44,197 INFO L226 Difference]: Without dead ends: 13418 [2021-03-11 12:20:44,197 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 5698.1ms TimeCoverageRelationStatistics Valid=909, Invalid=2283, Unknown=0, NotChecked=0, Total=3192 [2021-03-11 12:20:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13418 states. [2021-03-11 12:20:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13418 to 12466. [2021-03-11 12:20:44,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12466 states, 12462 states have (on average 3.324105280051356) internal successors, (41425), 12465 states have internal predecessors, (41425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12466 states to 12466 states and 41425 transitions. [2021-03-11 12:20:44,390 INFO L78 Accepts]: Start accepts. Automaton has 12466 states and 41425 transitions. Word has length 31 [2021-03-11 12:20:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:44,390 INFO L480 AbstractCegarLoop]: Abstraction has 12466 states and 41425 transitions. [2021-03-11 12:20:44,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 12466 states and 41425 transitions. [2021-03-11 12:20:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:44,401 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:44,402 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:44,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 12:20:44,402 INFO L428 AbstractCegarLoop]: === Iteration 113 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash 840239691, now seen corresponding path program 61 times [2021-03-11 12:20:44,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:44,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572670291] [2021-03-11 12:20:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:44,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:20:44,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:20:44,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:20:44,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:20:44,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:20:44,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:20:44,625 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.3 percent of original size [2021-03-11 12:20:44,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:20:44,665 INFO L142 QuantifierPusher]: treesize reduction 358, result has 25.7 percent of original size [2021-03-11 12:20:44,665 INFO L147 QuantifierPusher]: treesize reduction 22, result has 82.3 percent of original size 102 [2021-03-11 12:20:44,718 INFO L142 QuantifierPusher]: treesize reduction 45, result has 53.1 percent of original size [2021-03-11 12:20:44,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:20:44,730 INFO L142 QuantifierPusher]: treesize reduction 70, result has 50.0 percent of original size [2021-03-11 12:20:44,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:20:44,785 INFO L142 QuantifierPusher]: treesize reduction 70, result has 50.0 percent of original size [2021-03-11 12:20:44,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:20:44,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:44,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:20:44,873 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.7 percent of original size [2021-03-11 12:20:44,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:20:44,912 INFO L142 QuantifierPusher]: treesize reduction 190, result has 26.4 percent of original size [2021-03-11 12:20:44,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 12:20:44,957 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.9 percent of original size [2021-03-11 12:20:44,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-03-11 12:20:45,009 INFO L142 QuantifierPusher]: treesize reduction 55, result has 48.6 percent of original size [2021-03-11 12:20:45,010 INFO L147 QuantifierPusher]: treesize reduction 8, result has 84.6 percent of original size 44 [2021-03-11 12:20:45,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:45,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:20:45,081 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:20:45,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:45,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:45,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:45,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:20:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:45,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572670291] [2021-03-11 12:20:45,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:45,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:20:45,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342297958] [2021-03-11 12:20:45,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:20:45,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:45,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:20:45,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:20:45,117 INFO L87 Difference]: Start difference. First operand 12466 states and 41425 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:46,636 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-03-11 12:20:47,221 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2021-03-11 12:20:47,376 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-03-11 12:20:47,852 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-03-11 12:20:48,027 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-03-11 12:20:48,607 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-03-11 12:20:48,778 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-03-11 12:20:49,236 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-11 12:20:49,452 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-11 12:20:50,238 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2021-03-11 12:20:51,302 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-03-11 12:20:51,445 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2021-03-11 12:20:51,611 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-03-11 12:20:51,898 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-03-11 12:20:52,069 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-11 12:20:52,239 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-03-11 12:20:52,538 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-03-11 12:20:52,715 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-11 12:20:52,922 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-11 12:20:53,188 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2021-03-11 12:20:53,402 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-11 12:20:53,559 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-11 12:20:53,852 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-03-11 12:20:54,077 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-11 12:20:54,436 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-03-11 12:20:54,718 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-03-11 12:20:55,187 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 83 [2021-03-11 12:20:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:20:55,542 INFO L93 Difference]: Finished difference Result 14096 states and 46261 transitions. [2021-03-11 12:20:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 12:20:55,543 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:20:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:20:55,563 INFO L225 Difference]: With dead ends: 14096 [2021-03-11 12:20:55,563 INFO L226 Difference]: Without dead ends: 14096 [2021-03-11 12:20:55,563 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 6927.3ms TimeCoverageRelationStatistics Valid=1261, Invalid=3161, Unknown=0, NotChecked=0, Total=4422 [2021-03-11 12:20:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14096 states. [2021-03-11 12:20:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14096 to 12257. [2021-03-11 12:20:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12257 states, 12253 states have (on average 3.3224516444952257) internal successors, (40710), 12256 states have internal predecessors, (40710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12257 states to 12257 states and 40710 transitions. [2021-03-11 12:20:55,713 INFO L78 Accepts]: Start accepts. Automaton has 12257 states and 40710 transitions. Word has length 31 [2021-03-11 12:20:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:20:55,713 INFO L480 AbstractCegarLoop]: Abstraction has 12257 states and 40710 transitions. [2021-03-11 12:20:55,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12257 states and 40710 transitions. [2021-03-11 12:20:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:20:55,724 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:20:55,724 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:20:55,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 12:20:55,724 INFO L428 AbstractCegarLoop]: === Iteration 114 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:20:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:20:55,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1830460670, now seen corresponding path program 4 times [2021-03-11 12:20:55,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:20:55,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499961106] [2021-03-11 12:20:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:20:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:20:55,755 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:20:55,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:20:55,767 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:20:55,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:20:55,788 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:20:55,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:55,808 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:20:55,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:20:55,828 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:20:55,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:20:55,849 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-03-11 12:20:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:20:55,875 INFO L142 QuantifierPusher]: treesize reduction 37, result has 69.7 percent of original size [2021-03-11 12:20:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:20:55,956 INFO L142 QuantifierPusher]: treesize reduction 49, result has 64.2 percent of original size [2021-03-11 12:20:55,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-03-11 12:20:56,043 INFO L142 QuantifierPusher]: treesize reduction 45, result has 70.0 percent of original size [2021-03-11 12:20:56,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:20:56,063 INFO L142 QuantifierPusher]: treesize reduction 85, result has 61.0 percent of original size [2021-03-11 12:20:56,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:20:56,173 INFO L142 QuantifierPusher]: treesize reduction 83, result has 63.3 percent of original size [2021-03-11 12:20:56,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-03-11 12:20:56,202 INFO L142 QuantifierPusher]: treesize reduction 53, result has 56.6 percent of original size [2021-03-11 12:20:56,203 INFO L147 QuantifierPusher]: treesize reduction 7, result has 89.9 percent of original size 62 [2021-03-11 12:20:56,269 INFO L142 QuantifierPusher]: treesize reduction 61, result has 82.3 percent of original size [2021-03-11 12:20:56,270 INFO L147 QuantifierPusher]: treesize reduction 3, result has 98.9 percent of original size 280 [2021-03-11 12:20:56,310 INFO L142 QuantifierPusher]: treesize reduction 12, result has 72.7 percent of original size [2021-03-11 12:20:56,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:20:56,337 INFO L142 QuantifierPusher]: treesize reduction 4, result has 88.9 percent of original size [2021-03-11 12:20:56,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:20:56,367 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.6 percent of original size [2021-03-11 12:20:56,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:20:56,417 INFO L142 QuantifierPusher]: treesize reduction 14, result has 56.3 percent of original size [2021-03-11 12:20:56,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:20:56,445 INFO L142 QuantifierPusher]: treesize reduction 17, result has 85.0 percent of original size [2021-03-11 12:20:56,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:20:56,524 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-03-11 12:20:56,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:20:56,563 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-03-11 12:20:56,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 12:20:56,601 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size [2021-03-11 12:20:56,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:20:56,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:20:56,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:20:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:20:56,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499961106] [2021-03-11 12:20:56,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:20:56,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:20:56,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049253470] [2021-03-11 12:20:56,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:20:56,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:20:56,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:20:56,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:20:56,692 INFO L87 Difference]: Start difference. First operand 12257 states and 40710 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:20:57,308 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2021-03-11 12:20:57,533 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:20:57,950 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2021-03-11 12:20:58,293 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2021-03-11 12:21:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:01,463 INFO L93 Difference]: Finished difference Result 14181 states and 46784 transitions. [2021-03-11 12:21:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-11 12:21:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:01,485 INFO L225 Difference]: With dead ends: 14181 [2021-03-11 12:21:01,485 INFO L226 Difference]: Without dead ends: 14181 [2021-03-11 12:21:01,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2016.7ms TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2021-03-11 12:21:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14181 states. [2021-03-11 12:21:01,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14181 to 12277. [2021-03-11 12:21:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12277 states, 12273 states have (on average 3.323555772834678) internal successors, (40790), 12276 states have internal predecessors, (40790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12277 states to 12277 states and 40790 transitions. [2021-03-11 12:21:01,644 INFO L78 Accepts]: Start accepts. Automaton has 12277 states and 40790 transitions. Word has length 31 [2021-03-11 12:21:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:01,644 INFO L480 AbstractCegarLoop]: Abstraction has 12277 states and 40790 transitions. [2021-03-11 12:21:01,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12277 states and 40790 transitions. [2021-03-11 12:21:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:01,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:01,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:01,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 12:21:01,655 INFO L428 AbstractCegarLoop]: === Iteration 115 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash -993533875, now seen corresponding path program 62 times [2021-03-11 12:21:01,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:01,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172574640] [2021-03-11 12:21:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:01,680 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:21:01,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:21:01,691 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:21:01,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:21:01,707 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:21:01,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:21:01,722 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:01,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:01,753 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:01,785 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:01,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:01,817 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:01,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:01,852 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:21:01,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:01,888 INFO L142 QuantifierPusher]: treesize reduction 72, result has 48.6 percent of original size [2021-03-11 12:21:01,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-03-11 12:21:01,943 INFO L142 QuantifierPusher]: treesize reduction 50, result has 66.2 percent of original size [2021-03-11 12:21:01,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-03-11 12:21:02,008 INFO L142 QuantifierPusher]: treesize reduction 44, result has 68.3 percent of original size [2021-03-11 12:21:02,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-11 12:21:02,026 INFO L142 QuantifierPusher]: treesize reduction 60, result has 64.5 percent of original size [2021-03-11 12:21:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:21:02,101 INFO L142 QuantifierPusher]: treesize reduction 60, result has 65.1 percent of original size [2021-03-11 12:21:02,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:21:02,182 INFO L142 QuantifierPusher]: treesize reduction 56, result has 68.4 percent of original size [2021-03-11 12:21:02,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-11 12:21:02,208 INFO L142 QuantifierPusher]: treesize reduction 84, result has 59.0 percent of original size [2021-03-11 12:21:02,209 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.0 percent of original size 115 [2021-03-11 12:21:02,298 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:21:02,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:21:02,327 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:21:02,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:21:02,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:21:02,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:21:02,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:02,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172574640] [2021-03-11 12:21:02,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:02,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:21:02,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026096258] [2021-03-11 12:21:02,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:21:02,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:21:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:21:02,386 INFO L87 Difference]: Start difference. First operand 12277 states and 40790 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:03,260 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2021-03-11 12:21:03,499 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 52 [2021-03-11 12:21:03,754 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-03-11 12:21:04,006 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:21:04,185 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-03-11 12:21:04,443 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-03-11 12:21:04,884 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-03-11 12:21:05,310 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-03-11 12:21:05,517 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:21:05,734 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2021-03-11 12:21:05,948 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-03-11 12:21:06,089 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-03-11 12:21:06,278 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-03-11 12:21:06,436 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-11 12:21:06,615 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-03-11 12:21:06,804 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-03-11 12:21:07,002 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-03-11 12:21:07,194 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2021-03-11 12:21:07,543 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-03-11 12:21:07,749 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2021-03-11 12:21:07,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:07,971 INFO L93 Difference]: Finished difference Result 13595 states and 44746 transitions. [2021-03-11 12:21:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 12:21:07,973 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:07,992 INFO L225 Difference]: With dead ends: 13595 [2021-03-11 12:21:07,992 INFO L226 Difference]: Without dead ends: 13595 [2021-03-11 12:21:07,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 4189.8ms TimeCoverageRelationStatistics Valid=592, Invalid=1300, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 12:21:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13595 states. [2021-03-11 12:21:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13595 to 12472. [2021-03-11 12:21:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12472 states, 12468 states have (on average 3.3184953480911132) internal successors, (41375), 12471 states have internal predecessors, (41375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12472 states to 12472 states and 41375 transitions. [2021-03-11 12:21:08,145 INFO L78 Accepts]: Start accepts. Automaton has 12472 states and 41375 transitions. Word has length 31 [2021-03-11 12:21:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:08,146 INFO L480 AbstractCegarLoop]: Abstraction has 12472 states and 41375 transitions. [2021-03-11 12:21:08,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12472 states and 41375 transitions. [2021-03-11 12:21:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:08,156 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:08,156 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:08,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 12:21:08,156 INFO L428 AbstractCegarLoop]: === Iteration 116 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash -981640955, now seen corresponding path program 63 times [2021-03-11 12:21:08,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:08,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445196068] [2021-03-11 12:21:08,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:08,184 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:21:08,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:21:08,195 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:21:08,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:21:08,211 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:21:08,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:21:08,225 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:21:08,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:08,244 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:21:08,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:08,264 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:21:08,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:08,284 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:21:08,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:08,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 65.4 percent of original size [2021-03-11 12:21:08,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:08,331 INFO L142 QuantifierPusher]: treesize reduction 67, result has 54.4 percent of original size [2021-03-11 12:21:08,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:21:08,382 INFO L142 QuantifierPusher]: treesize reduction 83, result has 56.3 percent of original size [2021-03-11 12:21:08,383 INFO L147 QuantifierPusher]: treesize reduction 17, result has 84.1 percent of original size 90 [2021-03-11 12:21:08,449 INFO L142 QuantifierPusher]: treesize reduction 95, result has 45.7 percent of original size [2021-03-11 12:21:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:21:08,467 INFO L142 QuantifierPusher]: treesize reduction 115, result has 49.8 percent of original size [2021-03-11 12:21:08,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:21:08,555 INFO L142 QuantifierPusher]: treesize reduction 57, result has 75.1 percent of original size [2021-03-11 12:21:08,556 INFO L147 QuantifierPusher]: treesize reduction 33, result has 80.8 percent of original size 139 [2021-03-11 12:21:08,670 INFO L142 QuantifierPusher]: treesize reduction 53, result has 72.5 percent of original size [2021-03-11 12:21:08,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:21:08,701 INFO L142 QuantifierPusher]: treesize reduction 76, result has 64.5 percent of original size [2021-03-11 12:21:08,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-03-11 12:21:08,801 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-03-11 12:21:08,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:08,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:08,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:21:08,854 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:21:08,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:21:08,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:08,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:08,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:08,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:08,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445196068] [2021-03-11 12:21:08,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:08,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:21:08,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908645841] [2021-03-11 12:21:08,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:21:08,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:08,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:21:08,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:21:08,888 INFO L87 Difference]: Start difference. First operand 12472 states and 41375 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:10,136 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-03-11 12:21:10,419 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-03-11 12:21:10,741 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-03-11 12:21:11,098 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-03-11 12:21:11,279 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-03-11 12:21:11,606 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-03-11 12:21:12,283 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2021-03-11 12:21:12,983 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2021-03-11 12:21:13,234 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-03-11 12:21:13,496 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2021-03-11 12:21:13,753 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-03-11 12:21:14,015 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2021-03-11 12:21:14,214 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-03-11 12:21:14,464 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2021-03-11 12:21:14,806 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2021-03-11 12:21:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:15,029 INFO L93 Difference]: Finished difference Result 14556 states and 47657 transitions. [2021-03-11 12:21:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 12:21:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:15,050 INFO L225 Difference]: With dead ends: 14556 [2021-03-11 12:21:15,050 INFO L226 Difference]: Without dead ends: 14556 [2021-03-11 12:21:15,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 4148.9ms TimeCoverageRelationStatistics Valid=669, Invalid=1493, Unknown=0, NotChecked=0, Total=2162 [2021-03-11 12:21:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2021-03-11 12:21:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 12468. [2021-03-11 12:21:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12468 states, 12464 states have (on average 3.3185975609756095) internal successors, (41363), 12467 states have internal predecessors, (41363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12468 states to 12468 states and 41363 transitions. [2021-03-11 12:21:15,208 INFO L78 Accepts]: Start accepts. Automaton has 12468 states and 41363 transitions. Word has length 31 [2021-03-11 12:21:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:15,209 INFO L480 AbstractCegarLoop]: Abstraction has 12468 states and 41363 transitions. [2021-03-11 12:21:15,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12468 states and 41363 transitions. [2021-03-11 12:21:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:15,219 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:15,219 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:15,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 12:21:15,219 INFO L428 AbstractCegarLoop]: === Iteration 117 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:15,220 INFO L82 PathProgramCache]: Analyzing trace with hash -48206387, now seen corresponding path program 64 times [2021-03-11 12:21:15,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:15,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016573454] [2021-03-11 12:21:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:15,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:21:15,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:21:15,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:21:15,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:15,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:15,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:15,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:15,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:15,423 INFO L142 QuantifierPusher]: treesize reduction 15, result has 73.2 percent of original size [2021-03-11 12:21:15,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:21:15,462 INFO L142 QuantifierPusher]: treesize reduction 90, result has 43.4 percent of original size [2021-03-11 12:21:15,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:21:15,514 INFO L142 QuantifierPusher]: treesize reduction 56, result has 65.4 percent of original size [2021-03-11 12:21:15,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-03-11 12:21:15,577 INFO L142 QuantifierPusher]: treesize reduction 56, result has 64.8 percent of original size [2021-03-11 12:21:15,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:21:15,595 INFO L142 QuantifierPusher]: treesize reduction 68, result has 64.0 percent of original size [2021-03-11 12:21:15,596 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size 111 [2021-03-11 12:21:15,668 INFO L142 QuantifierPusher]: treesize reduction 77, result has 61.5 percent of original size [2021-03-11 12:21:15,669 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.9 percent of original size 113 [2021-03-11 12:21:15,750 INFO L142 QuantifierPusher]: treesize reduction 73, result has 62.2 percent of original size [2021-03-11 12:21:15,751 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.7 percent of original size 110 [2021-03-11 12:21:15,820 INFO L142 QuantifierPusher]: treesize reduction 88, result has 59.4 percent of original size [2021-03-11 12:21:15,820 INFO L147 QuantifierPusher]: treesize reduction 10, result has 92.2 percent of original size 119 [2021-03-11 12:21:15,904 INFO L142 QuantifierPusher]: treesize reduction 90, result has 61.4 percent of original size [2021-03-11 12:21:15,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-03-11 12:21:15,999 INFO L142 QuantifierPusher]: treesize reduction 42, result has 50.6 percent of original size [2021-03-11 12:21:16,000 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:21:16,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:21:16,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:21:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:16,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:16,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016573454] [2021-03-11 12:21:16,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:16,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:21:16,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893277303] [2021-03-11 12:21:16,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:21:16,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:16,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:21:16,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:21:16,094 INFO L87 Difference]: Start difference. First operand 12468 states and 41363 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:17,019 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-03-11 12:21:17,275 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-03-11 12:21:17,716 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-03-11 12:21:18,000 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2021-03-11 12:21:18,366 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-03-11 12:21:18,831 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-03-11 12:21:19,029 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2021-03-11 12:21:19,284 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-03-11 12:21:19,562 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-03-11 12:21:19,822 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-03-11 12:21:20,124 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2021-03-11 12:21:20,286 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-03-11 12:21:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:20,556 INFO L93 Difference]: Finished difference Result 13579 states and 44698 transitions. [2021-03-11 12:21:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 12:21:20,558 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:20,576 INFO L225 Difference]: With dead ends: 13579 [2021-03-11 12:21:20,577 INFO L226 Difference]: Without dead ends: 13579 [2021-03-11 12:21:20,577 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3146.9ms TimeCoverageRelationStatistics Valid=375, Invalid=957, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 12:21:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13579 states. [2021-03-11 12:21:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13579 to 12475. [2021-03-11 12:21:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12475 states, 12471 states have (on average 3.31841873145698) internal successors, (41384), 12474 states have internal predecessors, (41384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12475 states to 12475 states and 41384 transitions. [2021-03-11 12:21:20,729 INFO L78 Accepts]: Start accepts. Automaton has 12475 states and 41384 transitions. Word has length 31 [2021-03-11 12:21:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:20,729 INFO L480 AbstractCegarLoop]: Abstraction has 12475 states and 41384 transitions. [2021-03-11 12:21:20,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 12475 states and 41384 transitions. [2021-03-11 12:21:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:20,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:20,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:20,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 12:21:20,740 INFO L428 AbstractCegarLoop]: === Iteration 118 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2051900051, now seen corresponding path program 65 times [2021-03-11 12:21:20,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:20,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572724095] [2021-03-11 12:21:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:20,782 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:21:20,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:21:20,801 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:21:20,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:21:20,830 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:21:20,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:21:20,856 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:20,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:20,889 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:20,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:20,926 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:20,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:20,962 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:20,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:20,999 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:21:20,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:21,038 INFO L142 QuantifierPusher]: treesize reduction 69, result has 51.7 percent of original size [2021-03-11 12:21:21,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:21:21,093 INFO L142 QuantifierPusher]: treesize reduction 175, result has 68.1 percent of original size [2021-03-11 12:21:21,095 INFO L147 QuantifierPusher]: treesize reduction 14, result has 96.2 percent of original size 359 [2021-03-11 12:21:21,190 INFO L142 QuantifierPusher]: treesize reduction 42, result has 73.1 percent of original size [2021-03-11 12:21:21,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:21:21,210 INFO L142 QuantifierPusher]: treesize reduction 85, result has 58.9 percent of original size [2021-03-11 12:21:21,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-03-11 12:21:21,303 INFO L142 QuantifierPusher]: treesize reduction 85, result has 59.5 percent of original size [2021-03-11 12:21:21,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-03-11 12:21:21,407 INFO L142 QuantifierPusher]: treesize reduction 82, result has 61.9 percent of original size [2021-03-11 12:21:21,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:21:21,441 INFO L142 QuantifierPusher]: treesize reduction 109, result has 55.0 percent of original size [2021-03-11 12:21:21,441 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.2 percent of original size 128 [2021-03-11 12:21:21,546 INFO L142 QuantifierPusher]: treesize reduction 54, result has 48.6 percent of original size [2021-03-11 12:21:21,547 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-03-11 12:21:21,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:21,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:21:21,626 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:21:21,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:21:21,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:21,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:21,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:21,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:21,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572724095] [2021-03-11 12:21:21,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:21,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:21:21,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380095500] [2021-03-11 12:21:21,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:21:21,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:21:21,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:21:21,670 INFO L87 Difference]: Start difference. First operand 12475 states and 41384 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:23,179 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-03-11 12:21:23,528 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2021-03-11 12:21:24,211 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-03-11 12:21:24,379 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:21:24,704 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2021-03-11 12:21:24,930 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:21:25,536 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 76 [2021-03-11 12:21:25,756 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-03-11 12:21:26,440 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-03-11 12:21:26,718 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-03-11 12:21:26,974 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2021-03-11 12:21:27,352 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2021-03-11 12:21:27,542 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2021-03-11 12:21:27,775 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2021-03-11 12:21:27,993 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-03-11 12:21:28,315 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 84 [2021-03-11 12:21:28,561 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-03-11 12:21:28,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:28,838 INFO L93 Difference]: Finished difference Result 14619 states and 47846 transitions. [2021-03-11 12:21:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 12:21:28,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:28,860 INFO L225 Difference]: With dead ends: 14619 [2021-03-11 12:21:28,860 INFO L226 Difference]: Without dead ends: 14619 [2021-03-11 12:21:28,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 4808.0ms TimeCoverageRelationStatistics Valid=719, Invalid=1633, Unknown=0, NotChecked=0, Total=2352 [2021-03-11 12:21:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14619 states. [2021-03-11 12:21:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14619 to 12658. [2021-03-11 12:21:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12658 states, 12654 states have (on average 3.3169748696064487) internal successors, (41973), 12657 states have internal predecessors, (41973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12658 states to 12658 states and 41973 transitions. [2021-03-11 12:21:29,021 INFO L78 Accepts]: Start accepts. Automaton has 12658 states and 41973 transitions. Word has length 31 [2021-03-11 12:21:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:29,021 INFO L480 AbstractCegarLoop]: Abstraction has 12658 states and 41973 transitions. [2021-03-11 12:21:29,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12658 states and 41973 transitions. [2021-03-11 12:21:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:29,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:29,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:29,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 12:21:29,032 INFO L428 AbstractCegarLoop]: === Iteration 119 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -951160473, now seen corresponding path program 66 times [2021-03-11 12:21:29,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:29,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734790025] [2021-03-11 12:21:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:29,059 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:21:29,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:21:29,070 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:21:29,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:21:29,087 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:21:29,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:21:29,102 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:29,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:29,133 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:29,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:29,167 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:29,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:29,201 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:21:29,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:29,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:21:29,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:29,278 INFO L142 QuantifierPusher]: treesize reduction 33, result has 65.6 percent of original size [2021-03-11 12:21:29,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:21:29,331 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.0 percent of original size [2021-03-11 12:21:29,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-03-11 12:21:29,345 INFO L142 QuantifierPusher]: treesize reduction 27, result has 71.9 percent of original size [2021-03-11 12:21:29,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:21:29,406 INFO L142 QuantifierPusher]: treesize reduction 109, result has 49.8 percent of original size [2021-03-11 12:21:29,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:21:29,496 INFO L142 QuantifierPusher]: treesize reduction 84, result has 61.3 percent of original size [2021-03-11 12:21:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:21:29,655 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-03-11 12:21:29,657 INFO L142 QuantifierPusher]: treesize reduction 47, result has 74.0 percent of original size [2021-03-11 12:21:29,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-03-11 12:21:29,683 INFO L142 QuantifierPusher]: treesize reduction 65, result has 67.8 percent of original size [2021-03-11 12:21:29,683 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size 132 [2021-03-11 12:21:29,789 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-03-11 12:21:29,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:21:29,819 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:21:29,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:21:29,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:21:29,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:21:29,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:29,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:29,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734790025] [2021-03-11 12:21:29,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:29,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:21:29,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890072069] [2021-03-11 12:21:29,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:21:29,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:29,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:21:29,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:21:29,881 INFO L87 Difference]: Start difference. First operand 12658 states and 41973 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:30,811 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:21:31,238 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-03-11 12:21:31,545 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2021-03-11 12:21:31,877 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 57 [2021-03-11 12:21:32,301 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-11 12:21:32,742 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-03-11 12:21:32,964 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-03-11 12:21:33,253 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-03-11 12:21:33,394 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-03-11 12:21:33,600 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2021-03-11 12:21:33,801 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-03-11 12:21:34,045 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2021-03-11 12:21:34,284 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2021-03-11 12:21:34,616 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-03-11 12:21:34,806 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-03-11 12:21:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:35,104 INFO L93 Difference]: Finished difference Result 13681 states and 45046 transitions. [2021-03-11 12:21:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 12:21:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:35,125 INFO L225 Difference]: With dead ends: 13681 [2021-03-11 12:21:35,125 INFO L226 Difference]: Without dead ends: 13681 [2021-03-11 12:21:35,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 3568.4ms TimeCoverageRelationStatistics Valid=449, Invalid=1033, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:21:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2021-03-11 12:21:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 12732. [2021-03-11 12:21:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12732 states, 12728 states have (on average 3.315131992457574) internal successors, (42195), 12731 states have internal predecessors, (42195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 42195 transitions. [2021-03-11 12:21:35,273 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 42195 transitions. Word has length 31 [2021-03-11 12:21:35,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:35,273 INFO L480 AbstractCegarLoop]: Abstraction has 12732 states and 42195 transitions. [2021-03-11 12:21:35,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 42195 transitions. [2021-03-11 12:21:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:35,284 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:35,284 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:35,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 12:21:35,285 INFO L428 AbstractCegarLoop]: === Iteration 120 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:35,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -939267553, now seen corresponding path program 67 times [2021-03-11 12:21:35,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:35,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346179337] [2021-03-11 12:21:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:35,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:21:35,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:21:35,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:21:35,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:35,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:35,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:35,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:35,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:35,543 INFO L142 QuantifierPusher]: treesize reduction 15, result has 74.6 percent of original size [2021-03-11 12:21:35,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:35,582 INFO L142 QuantifierPusher]: treesize reduction 31, result has 69.3 percent of original size [2021-03-11 12:21:35,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:21:35,636 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.7 percent of original size [2021-03-11 12:21:35,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:21:35,651 INFO L142 QuantifierPusher]: treesize reduction 33, result has 75.7 percent of original size [2021-03-11 12:21:35,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:21:35,744 INFO L142 QuantifierPusher]: treesize reduction 76, result has 71.3 percent of original size [2021-03-11 12:21:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-03-11 12:21:35,884 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2021-03-11 12:21:35,887 INFO L142 QuantifierPusher]: treesize reduction 194, result has 70.4 percent of original size [2021-03-11 12:21:35,889 INFO L147 QuantifierPusher]: treesize reduction 83, result has 82.0 percent of original size 378 [2021-03-11 12:21:36,126 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 56 [2021-03-11 12:21:36,128 INFO L142 QuantifierPusher]: treesize reduction 61, result has 74.7 percent of original size [2021-03-11 12:21:36,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-03-11 12:21:36,254 INFO L142 QuantifierPusher]: treesize reduction 137, result has 58.5 percent of original size [2021-03-11 12:21:36,255 INFO L147 QuantifierPusher]: treesize reduction 7, result has 96.4 percent of original size 186 [2021-03-11 12:21:36,402 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-03-11 12:21:36,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:36,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:36,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:21:36,474 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:21:36,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:21:36,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:36,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:36,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:36,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:36,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346179337] [2021-03-11 12:21:36,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:36,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:21:36,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261132138] [2021-03-11 12:21:36,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:21:36,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:36,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:21:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:21:36,515 INFO L87 Difference]: Start difference. First operand 12732 states and 42195 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:38,126 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-03-11 12:21:38,800 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2021-03-11 12:21:39,305 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 60 [2021-03-11 12:21:39,796 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 65 [2021-03-11 12:21:40,346 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-03-11 12:21:40,592 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2021-03-11 12:21:41,097 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-03-11 12:21:41,358 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2021-03-11 12:21:41,661 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-03-11 12:21:42,123 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-03-11 12:21:42,469 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 68 [2021-03-11 12:21:42,838 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2021-03-11 12:21:43,271 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 73 [2021-03-11 12:21:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:43,530 INFO L93 Difference]: Finished difference Result 14596 states and 47797 transitions. [2021-03-11 12:21:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-11 12:21:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:43,552 INFO L225 Difference]: With dead ends: 14596 [2021-03-11 12:21:43,552 INFO L226 Difference]: Without dead ends: 14596 [2021-03-11 12:21:43,552 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4631.8ms TimeCoverageRelationStatistics Valid=544, Invalid=1348, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 12:21:43,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14596 states. [2021-03-11 12:21:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14596 to 12708. [2021-03-11 12:21:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12708 states, 12704 states have (on average 3.315727329974811) internal successors, (42123), 12707 states have internal predecessors, (42123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12708 states to 12708 states and 42123 transitions. [2021-03-11 12:21:43,711 INFO L78 Accepts]: Start accepts. Automaton has 12708 states and 42123 transitions. Word has length 31 [2021-03-11 12:21:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:43,711 INFO L480 AbstractCegarLoop]: Abstraction has 12708 states and 42123 transitions. [2021-03-11 12:21:43,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12708 states and 42123 transitions. [2021-03-11 12:21:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:43,722 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:43,722 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:43,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 12:21:43,722 INFO L428 AbstractCegarLoop]: === Iteration 121 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:43,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:43,722 INFO L82 PathProgramCache]: Analyzing trace with hash -5832985, now seen corresponding path program 68 times [2021-03-11 12:21:43,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:43,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380682349] [2021-03-11 12:21:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:43,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:21:43,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:21:43,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:21:43,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:43,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:43,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:43,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:43,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:43,933 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:21:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:21:43,972 INFO L142 QuantifierPusher]: treesize reduction 23, result has 75.0 percent of original size [2021-03-11 12:21:43,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:21:44,025 INFO L142 QuantifierPusher]: treesize reduction 17, result has 78.2 percent of original size [2021-03-11 12:21:44,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:21:44,040 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.4 percent of original size [2021-03-11 12:21:44,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:21:44,089 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:21:44,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:21:44,172 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.3 percent of original size [2021-03-11 12:21:44,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:21:44,260 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:21:44,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:21:44,345 INFO L142 QuantifierPusher]: treesize reduction 69, result has 62.9 percent of original size [2021-03-11 12:21:44,345 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:21:44,440 INFO L142 QuantifierPusher]: treesize reduction 67, result has 66.7 percent of original size [2021-03-11 12:21:44,441 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-03-11 12:21:44,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-03-11 12:21:44,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:21:44,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:21:44,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:21:44,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:44,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:44,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380682349] [2021-03-11 12:21:44,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:44,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:21:44,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596102752] [2021-03-11 12:21:44,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:21:44,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:44,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:21:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:21:44,633 INFO L87 Difference]: Start difference. First operand 12708 states and 42123 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:45,567 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:21:45,933 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-03-11 12:21:46,227 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-03-11 12:21:46,556 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-11 12:21:46,921 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 58 [2021-03-11 12:21:47,351 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-03-11 12:21:47,543 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-03-11 12:21:47,809 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-03-11 12:21:48,021 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2021-03-11 12:21:48,277 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-03-11 12:21:48,649 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2021-03-11 12:21:48,828 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-03-11 12:21:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:49,099 INFO L93 Difference]: Finished difference Result 13651 states and 44956 transitions. [2021-03-11 12:21:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 12:21:49,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:49,120 INFO L225 Difference]: With dead ends: 13651 [2021-03-11 12:21:49,120 INFO L226 Difference]: Without dead ends: 13651 [2021-03-11 12:21:49,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3133.4ms TimeCoverageRelationStatistics Valid=369, Invalid=963, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 12:21:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13651 states. [2021-03-11 12:21:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13651 to 12715. [2021-03-11 12:21:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12715 states, 12711 states have (on average 3.315553457635119) internal successors, (42144), 12714 states have internal predecessors, (42144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:49,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12715 states to 12715 states and 42144 transitions. [2021-03-11 12:21:49,274 INFO L78 Accepts]: Start accepts. Automaton has 12715 states and 42144 transitions. Word has length 31 [2021-03-11 12:21:49,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:49,274 INFO L480 AbstractCegarLoop]: Abstraction has 12715 states and 42144 transitions. [2021-03-11 12:21:49,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12715 states and 42144 transitions. [2021-03-11 12:21:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:49,285 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:49,285 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:49,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 12:21:49,285 INFO L428 AbstractCegarLoop]: === Iteration 122 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:49,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:49,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2094273453, now seen corresponding path program 69 times [2021-03-11 12:21:49,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:49,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054309705] [2021-03-11 12:21:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:49,317 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:21:49,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:21:49,341 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:21:49,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:21:49,378 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:21:49,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:21:49,412 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:49,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:49,448 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:49,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:49,484 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:49,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:49,520 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:21:49,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:49,558 INFO L142 QuantifierPusher]: treesize reduction 28, result has 61.1 percent of original size [2021-03-11 12:21:49,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:21:49,600 INFO L142 QuantifierPusher]: treesize reduction 29, result has 72.6 percent of original size [2021-03-11 12:21:49,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:21:49,658 INFO L142 QuantifierPusher]: treesize reduction 20, result has 80.0 percent of original size [2021-03-11 12:21:49,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:21:49,673 INFO L142 QuantifierPusher]: treesize reduction 27, result has 72.4 percent of original size [2021-03-11 12:21:49,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:21:49,741 INFO L142 QuantifierPusher]: treesize reduction 74, result has 63.0 percent of original size [2021-03-11 12:21:49,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-03-11 12:21:49,831 INFO L142 QuantifierPusher]: treesize reduction 422, result has 29.1 percent of original size [2021-03-11 12:21:49,832 INFO L147 QuantifierPusher]: treesize reduction 22, result has 87.3 percent of original size 151 [2021-03-11 12:21:49,928 INFO L142 QuantifierPusher]: treesize reduction 78, result has 64.1 percent of original size [2021-03-11 12:21:49,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-03-11 12:21:50,084 INFO L142 QuantifierPusher]: treesize reduction 131, result has 47.4 percent of original size [2021-03-11 12:21:50,085 INFO L147 QuantifierPusher]: treesize reduction 5, result has 95.8 percent of original size 113 [2021-03-11 12:21:50,182 INFO L142 QuantifierPusher]: treesize reduction 69, result has 42.5 percent of original size [2021-03-11 12:21:50,182 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-03-11 12:21:50,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:50,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:21:50,268 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:21:50,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:21:50,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:50,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:50,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:50,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:50,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054309705] [2021-03-11 12:21:50,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:50,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:21:50,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902309426] [2021-03-11 12:21:50,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:21:50,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:21:50,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:21:50,316 INFO L87 Difference]: Start difference. First operand 12715 states and 42144 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:51,728 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2021-03-11 12:21:52,292 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2021-03-11 12:21:52,734 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2021-03-11 12:21:53,138 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-11 12:21:53,814 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2021-03-11 12:21:54,284 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-03-11 12:21:54,693 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2021-03-11 12:21:54,992 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-03-11 12:21:55,390 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-03-11 12:21:55,686 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2021-03-11 12:21:56,018 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-03-11 12:21:56,400 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-03-11 12:21:56,642 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2021-03-11 12:21:56,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:21:56,851 INFO L93 Difference]: Finished difference Result 14659 states and 47986 transitions. [2021-03-11 12:21:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 12:21:56,852 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:21:56,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:21:56,872 INFO L225 Difference]: With dead ends: 14659 [2021-03-11 12:21:56,872 INFO L226 Difference]: Without dead ends: 14659 [2021-03-11 12:21:56,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 4331.7ms TimeCoverageRelationStatistics Valid=591, Invalid=1479, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:21:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14659 states. [2021-03-11 12:21:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 12698. [2021-03-11 12:21:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12698 states, 12694 states have (on average 3.315976051677958) internal successors, (42093), 12697 states have internal predecessors, (42093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12698 states to 12698 states and 42093 transitions. [2021-03-11 12:21:57,029 INFO L78 Accepts]: Start accepts. Automaton has 12698 states and 42093 transitions. Word has length 31 [2021-03-11 12:21:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:21:57,029 INFO L480 AbstractCegarLoop]: Abstraction has 12698 states and 42093 transitions. [2021-03-11 12:21:57,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12698 states and 42093 transitions. [2021-03-11 12:21:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:21:57,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:21:57,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:21:57,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 12:21:57,040 INFO L428 AbstractCegarLoop]: === Iteration 123 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:21:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:21:57,040 INFO L82 PathProgramCache]: Analyzing trace with hash 474299559, now seen corresponding path program 70 times [2021-03-11 12:21:57,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:21:57,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639556739] [2021-03-11 12:21:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:21:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:21:57,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:21:57,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:21:57,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:21:57,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:21:57,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:21:57,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:21:57,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:21:57,262 INFO L142 QuantifierPusher]: treesize reduction 15, result has 68.8 percent of original size [2021-03-11 12:21:57,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:21:57,302 INFO L142 QuantifierPusher]: treesize reduction 23, result has 77.2 percent of original size [2021-03-11 12:21:57,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:21:57,366 INFO L142 QuantifierPusher]: treesize reduction 27, result has 69.3 percent of original size [2021-03-11 12:21:57,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:21:57,384 INFO L142 QuantifierPusher]: treesize reduction 18, result has 78.0 percent of original size [2021-03-11 12:21:57,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:21:57,444 INFO L142 QuantifierPusher]: treesize reduction 49, result has 77.9 percent of original size [2021-03-11 12:21:57,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-03-11 12:21:57,550 INFO L142 QuantifierPusher]: treesize reduction 66, result has 73.2 percent of original size [2021-03-11 12:21:57,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-03-11 12:21:57,658 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:21:57,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:21:57,700 INFO L142 QuantifierPusher]: treesize reduction 41, result has 43.1 percent of original size [2021-03-11 12:21:57,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:21:57,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:21:57,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:21:57,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:21:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:21:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:21:57,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639556739] [2021-03-11 12:21:57,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:21:57,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:21:57,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754102155] [2021-03-11 12:21:57,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:21:57,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:21:57,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:21:57,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:21:57,772 INFO L87 Difference]: Start difference. First operand 12698 states and 42093 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:21:59,404 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2021-03-11 12:22:00,212 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2021-03-11 12:22:00,390 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-03-11 12:22:00,639 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-03-11 12:22:00,840 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-03-11 12:22:01,005 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2021-03-11 12:22:01,533 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-11 12:22:01,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:01,987 INFO L93 Difference]: Finished difference Result 13671 states and 45018 transitions. [2021-03-11 12:22:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-11 12:22:01,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:02,008 INFO L225 Difference]: With dead ends: 13671 [2021-03-11 12:22:02,009 INFO L226 Difference]: Without dead ends: 13671 [2021-03-11 12:22:02,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2411.8ms TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2021-03-11 12:22:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13671 states. [2021-03-11 12:22:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13671 to 12713. [2021-03-11 12:22:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12709 states have (on average 3.315760484695885) internal successors, (42140), 12712 states have internal predecessors, (42140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 42140 transitions. [2021-03-11 12:22:02,163 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 42140 transitions. Word has length 31 [2021-03-11 12:22:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:02,164 INFO L480 AbstractCegarLoop]: Abstraction has 12713 states and 42140 transitions. [2021-03-11 12:22:02,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:02,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 42140 transitions. [2021-03-11 12:22:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:02,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:02,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:02,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 12:22:02,175 INFO L428 AbstractCegarLoop]: === Iteration 124 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash -981506209, now seen corresponding path program 71 times [2021-03-11 12:22:02,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:02,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106745611] [2021-03-11 12:22:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:02,202 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:22:02,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:22:02,214 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:22:02,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:02,231 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:22:02,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:22:02,248 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:02,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:02,283 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:02,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:02,320 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:02,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:02,355 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:02,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:02,393 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-03-11 12:22:02,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:02,432 INFO L142 QuantifierPusher]: treesize reduction 28, result has 72.3 percent of original size [2021-03-11 12:22:02,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:22:02,499 INFO L142 QuantifierPusher]: treesize reduction 20, result has 78.5 percent of original size [2021-03-11 12:22:02,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:22:02,515 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.3 percent of original size [2021-03-11 12:22:02,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:22:02,578 INFO L142 QuantifierPusher]: treesize reduction 46, result has 72.3 percent of original size [2021-03-11 12:22:02,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:22:02,662 INFO L142 QuantifierPusher]: treesize reduction 46, result has 72.3 percent of original size [2021-03-11 12:22:02,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:22:02,664 INFO L142 QuantifierPusher]: treesize reduction 20, result has 61.5 percent of original size [2021-03-11 12:22:02,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:22:02,695 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:22:02,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:22:02,738 INFO L142 QuantifierPusher]: treesize reduction 49, result has 41.7 percent of original size [2021-03-11 12:22:02,738 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:22:02,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:22:02,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:22:02,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:02,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:02,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106745611] [2021-03-11 12:22:02,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:02,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:22:02,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417541523] [2021-03-11 12:22:02,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:22:02,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:02,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:22:02,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:22:02,818 INFO L87 Difference]: Start difference. First operand 12713 states and 42140 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:03,549 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-03-11 12:22:03,898 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2021-03-11 12:22:04,028 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-03-11 12:22:04,309 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-03-11 12:22:04,649 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2021-03-11 12:22:04,972 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-03-11 12:22:05,936 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-03-11 12:22:06,071 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-03-11 12:22:06,222 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-03-11 12:22:06,392 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2021-03-11 12:22:06,575 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-03-11 12:22:06,741 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-03-11 12:22:06,967 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-03-11 12:22:07,171 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2021-03-11 12:22:07,393 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-03-11 12:22:07,559 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-03-11 12:22:07,776 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2021-03-11 12:22:07,960 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2021-03-11 12:22:08,158 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-03-11 12:22:08,443 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2021-03-11 12:22:08,892 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2021-03-11 12:22:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:09,206 INFO L93 Difference]: Finished difference Result 14347 states and 47090 transitions. [2021-03-11 12:22:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:22:09,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:09,228 INFO L225 Difference]: With dead ends: 14347 [2021-03-11 12:22:09,228 INFO L226 Difference]: Without dead ends: 14347 [2021-03-11 12:22:09,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4334.6ms TimeCoverageRelationStatistics Valid=584, Invalid=1308, Unknown=0, NotChecked=0, Total=1892 [2021-03-11 12:22:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2021-03-11 12:22:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 12963. [2021-03-11 12:22:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12963 states, 12959 states have (on average 3.312755613859094) internal successors, (42930), 12962 states have internal predecessors, (42930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12963 states to 12963 states and 42930 transitions. [2021-03-11 12:22:09,386 INFO L78 Accepts]: Start accepts. Automaton has 12963 states and 42930 transitions. Word has length 31 [2021-03-11 12:22:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:09,386 INFO L480 AbstractCegarLoop]: Abstraction has 12963 states and 42930 transitions. [2021-03-11 12:22:09,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 12963 states and 42930 transitions. [2021-03-11 12:22:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:09,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:09,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:09,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 12:22:09,397 INFO L428 AbstractCegarLoop]: === Iteration 125 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1502621811, now seen corresponding path program 72 times [2021-03-11 12:22:09,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:09,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804938952] [2021-03-11 12:22:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:09,429 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.0 percent of original size [2021-03-11 12:22:09,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:22:09,452 INFO L142 QuantifierPusher]: treesize reduction 6, result has 91.8 percent of original size [2021-03-11 12:22:09,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:22:09,490 INFO L142 QuantifierPusher]: treesize reduction 6, result has 85.4 percent of original size [2021-03-11 12:22:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:22:09,524 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.2 percent of original size [2021-03-11 12:22:09,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:09,565 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.2 percent of original size [2021-03-11 12:22:09,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:09,607 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.2 percent of original size [2021-03-11 12:22:09,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:09,651 INFO L142 QuantifierPusher]: treesize reduction 6, result has 87.2 percent of original size [2021-03-11 12:22:09,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:09,698 INFO L142 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size [2021-03-11 12:22:09,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:09,748 INFO L142 QuantifierPusher]: treesize reduction 416, result has 24.2 percent of original size [2021-03-11 12:22:09,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:22:09,829 INFO L142 QuantifierPusher]: treesize reduction 43, result has 71.7 percent of original size [2021-03-11 12:22:09,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:22:09,846 INFO L142 QuantifierPusher]: treesize reduction 58, result has 60.5 percent of original size [2021-03-11 12:22:09,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-03-11 12:22:09,918 INFO L142 QuantifierPusher]: treesize reduction 99, result has 63.9 percent of original size [2021-03-11 12:22:09,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-03-11 12:22:10,056 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2021-03-11 12:22:10,058 INFO L142 QuantifierPusher]: treesize reduction 81, result has 71.7 percent of original size [2021-03-11 12:22:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-03-11 12:22:10,212 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-03-11 12:22:10,214 INFO L142 QuantifierPusher]: treesize reduction 75, result has 73.3 percent of original size [2021-03-11 12:22:10,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-03-11 12:22:10,248 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 12:22:10,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:22:10,291 INFO L142 QuantifierPusher]: treesize reduction 44, result has 47.6 percent of original size [2021-03-11 12:22:10,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:22:10,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:10,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:22:10,367 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:22:10,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:22:10,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:10,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:10,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:10,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:10,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804938952] [2021-03-11 12:22:10,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:10,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:22:10,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734798597] [2021-03-11 12:22:10,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:22:10,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:22:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:22:10,406 INFO L87 Difference]: Start difference. First operand 12963 states and 42930 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:11,690 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2021-03-11 12:22:12,146 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2021-03-11 12:22:12,279 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2021-03-11 12:22:12,629 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-03-11 12:22:13,019 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2021-03-11 12:22:13,552 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-03-11 12:22:13,709 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-03-11 12:22:14,142 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-03-11 12:22:14,313 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:22:15,085 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2021-03-11 12:22:15,943 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-03-11 12:22:16,096 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-03-11 12:22:16,411 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-03-11 12:22:16,576 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2021-03-11 12:22:16,888 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-03-11 12:22:17,211 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-03-11 12:22:17,374 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-11 12:22:17,664 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2021-03-11 12:22:17,891 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2021-03-11 12:22:18,198 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-03-11 12:22:18,416 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2021-03-11 12:22:18,838 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-03-11 12:22:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:19,160 INFO L93 Difference]: Finished difference Result 15298 states and 49925 transitions. [2021-03-11 12:22:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 12:22:19,162 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:19,183 INFO L225 Difference]: With dead ends: 15298 [2021-03-11 12:22:19,183 INFO L226 Difference]: Without dead ends: 15298 [2021-03-11 12:22:19,183 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 5861.5ms TimeCoverageRelationStatistics Valid=899, Invalid=2071, Unknown=0, NotChecked=0, Total=2970 [2021-03-11 12:22:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15298 states. [2021-03-11 12:22:19,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15298 to 12688. [2021-03-11 12:22:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12688 states, 12684 states have (on average 3.3178019552191738) internal successors, (42083), 12687 states have internal predecessors, (42083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12688 states to 12688 states and 42083 transitions. [2021-03-11 12:22:19,347 INFO L78 Accepts]: Start accepts. Automaton has 12688 states and 42083 transitions. Word has length 31 [2021-03-11 12:22:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:19,347 INFO L480 AbstractCegarLoop]: Abstraction has 12688 states and 42083 transitions. [2021-03-11 12:22:19,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12688 states and 42083 transitions. [2021-03-11 12:22:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:19,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:19,359 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:19,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 12:22:19,359 INFO L428 AbstractCegarLoop]: === Iteration 126 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:19,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:19,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1654060725, now seen corresponding path program 73 times [2021-03-11 12:22:19,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:19,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169037861] [2021-03-11 12:22:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:19,387 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:22:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:22:19,400 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:22:19,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:19,418 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:22:19,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:22:19,436 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:19,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:19,473 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:19,510 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:22:19,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:19,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:22:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:19,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:22:19,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:22:19,629 INFO L142 QuantifierPusher]: treesize reduction 97, result has 41.6 percent of original size [2021-03-11 12:22:19,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-03-11 12:22:19,681 INFO L142 QuantifierPusher]: treesize reduction 63, result has 62.7 percent of original size [2021-03-11 12:22:19,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-03-11 12:22:19,743 INFO L142 QuantifierPusher]: treesize reduction 63, result has 62.0 percent of original size [2021-03-11 12:22:19,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:22:19,764 INFO L142 QuantifierPusher]: treesize reduction 85, result has 56.6 percent of original size [2021-03-11 12:22:19,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:22:19,854 INFO L142 QuantifierPusher]: treesize reduction 86, result has 59.0 percent of original size [2021-03-11 12:22:19,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:22:19,954 INFO L142 QuantifierPusher]: treesize reduction 77, result has 62.3 percent of original size [2021-03-11 12:22:19,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:22:19,981 INFO L142 QuantifierPusher]: treesize reduction 108, result has 54.0 percent of original size [2021-03-11 12:22:19,982 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.3 percent of original size 121 [2021-03-11 12:22:20,080 INFO L142 QuantifierPusher]: treesize reduction 31, result has 48.3 percent of original size [2021-03-11 12:22:20,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:22:20,114 INFO L142 QuantifierPusher]: treesize reduction 39, result has 40.9 percent of original size [2021-03-11 12:22:20,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:22:20,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:22:20,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:22:20,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:20,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:20,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169037861] [2021-03-11 12:22:20,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:20,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:22:20,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930115366] [2021-03-11 12:22:20,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:22:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:20,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:22:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:22:20,181 INFO L87 Difference]: Start difference. First operand 12688 states and 42083 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:21,238 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-03-11 12:22:21,534 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-03-11 12:22:21,878 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-03-11 12:22:22,200 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-03-11 12:22:22,401 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-03-11 12:22:22,724 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2021-03-11 12:22:23,327 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2021-03-11 12:22:23,797 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-03-11 12:22:24,011 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-03-11 12:22:24,249 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-03-11 12:22:24,490 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-03-11 12:22:24,647 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-03-11 12:22:24,844 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2021-03-11 12:22:25,011 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2021-03-11 12:22:25,203 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-03-11 12:22:25,413 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2021-03-11 12:22:25,623 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2021-03-11 12:22:25,841 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2021-03-11 12:22:26,246 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2021-03-11 12:22:26,463 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-03-11 12:22:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:26,771 INFO L93 Difference]: Finished difference Result 14665 states and 48016 transitions. [2021-03-11 12:22:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-11 12:22:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:26,793 INFO L225 Difference]: With dead ends: 14665 [2021-03-11 12:22:26,794 INFO L226 Difference]: Without dead ends: 14665 [2021-03-11 12:22:26,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 4373.1ms TimeCoverageRelationStatistics Valid=565, Invalid=1241, Unknown=0, NotChecked=0, Total=1806 [2021-03-11 12:22:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14665 states. [2021-03-11 12:22:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14665 to 12875. [2021-03-11 12:22:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12871 states have (on average 3.313184678735141) internal successors, (42644), 12874 states have internal predecessors, (42644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 42644 transitions. [2021-03-11 12:22:26,954 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 42644 transitions. Word has length 31 [2021-03-11 12:22:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:26,954 INFO L480 AbstractCegarLoop]: Abstraction has 12875 states and 42644 transitions. [2021-03-11 12:22:26,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 42644 transitions. [2021-03-11 12:22:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:26,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:26,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:26,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 12:22:26,965 INFO L428 AbstractCegarLoop]: === Iteration 127 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:26,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1665953645, now seen corresponding path program 74 times [2021-03-11 12:22:26,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:26,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507050491] [2021-03-11 12:22:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:26,995 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:22:26,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:22:27,007 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:22:27,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:22:27,026 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:22:27,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:22:27,043 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:22:27,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:22:27,064 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:22:27,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:22:27,089 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:22:27,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:22:27,114 INFO L142 QuantifierPusher]: treesize reduction 71, result has 31.7 percent of original size [2021-03-11 12:22:27,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:22:27,141 INFO L142 QuantifierPusher]: treesize reduction 71, result has 31.7 percent of original size [2021-03-11 12:22:27,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:22:27,170 INFO L142 QuantifierPusher]: treesize reduction 97, result has 42.3 percent of original size [2021-03-11 12:22:27,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:22:27,238 INFO L142 QuantifierPusher]: treesize reduction 145, result has 42.5 percent of original size [2021-03-11 12:22:27,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-03-11 12:22:27,312 INFO L142 QuantifierPusher]: treesize reduction 98, result has 52.7 percent of original size [2021-03-11 12:22:27,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-03-11 12:22:27,336 INFO L142 QuantifierPusher]: treesize reduction 132, result has 45.7 percent of original size [2021-03-11 12:22:27,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:22:27,443 INFO L142 QuantifierPusher]: treesize reduction 109, result has 56.0 percent of original size [2021-03-11 12:22:27,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-03-11 12:22:27,567 INFO L142 QuantifierPusher]: treesize reduction 112, result has 55.2 percent of original size [2021-03-11 12:22:27,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-03-11 12:22:27,602 INFO L142 QuantifierPusher]: treesize reduction 111, result has 59.0 percent of original size [2021-03-11 12:22:27,603 INFO L147 QuantifierPusher]: treesize reduction 4, result has 97.5 percent of original size 156 [2021-03-11 12:22:27,745 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2021-03-11 12:22:27,746 INFO L142 QuantifierPusher]: treesize reduction 51, result has 50.5 percent of original size [2021-03-11 12:22:27,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:27,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:27,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:22:27,846 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-03-11 12:22:27,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:22:27,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:27,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:27,892 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-11 12:22:27,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:27,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:27,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:27,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507050491] [2021-03-11 12:22:27,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:27,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:22:27,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263716477] [2021-03-11 12:22:27,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:22:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:22:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:22:27,894 INFO L87 Difference]: Start difference. First operand 12875 states and 42644 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:29,043 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-11 12:22:29,216 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-03-11 12:22:29,539 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2021-03-11 12:22:29,888 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-03-11 12:22:30,305 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-03-11 12:22:30,749 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-03-11 12:22:31,194 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2021-03-11 12:22:31,965 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2021-03-11 12:22:32,239 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2021-03-11 12:22:32,571 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-03-11 12:22:32,823 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2021-03-11 12:22:33,140 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-03-11 12:22:33,457 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-03-11 12:22:33,792 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2021-03-11 12:22:34,108 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-03-11 12:22:34,456 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-03-11 12:22:34,902 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2021-03-11 12:22:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:35,182 INFO L93 Difference]: Finished difference Result 15806 states and 51467 transitions. [2021-03-11 12:22:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:22:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:35,206 INFO L225 Difference]: With dead ends: 15806 [2021-03-11 12:22:35,206 INFO L226 Difference]: Without dead ends: 15806 [2021-03-11 12:22:35,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 4804.5ms TimeCoverageRelationStatistics Valid=630, Invalid=1440, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:22:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15806 states. [2021-03-11 12:22:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15806 to 12861. [2021-03-11 12:22:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12861 states, 12857 states have (on average 3.313525705841176) internal successors, (42602), 12860 states have internal predecessors, (42602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12861 states to 12861 states and 42602 transitions. [2021-03-11 12:22:35,380 INFO L78 Accepts]: Start accepts. Automaton has 12861 states and 42602 transitions. Word has length 31 [2021-03-11 12:22:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:35,380 INFO L480 AbstractCegarLoop]: Abstraction has 12861 states and 42602 transitions. [2021-03-11 12:22:35,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 12861 states and 42602 transitions. [2021-03-11 12:22:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:35,392 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:35,392 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:35,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 12:22:35,392 INFO L428 AbstractCegarLoop]: === Iteration 128 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1695579083, now seen corresponding path program 75 times [2021-03-11 12:22:35,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:35,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947162762] [2021-03-11 12:22:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:35,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:22:35,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:35,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:22:35,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:35,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:35,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:35,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:35,588 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:22:35,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:35,627 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:22:35,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:35,669 INFO L142 QuantifierPusher]: treesize reduction 49, result has 65.5 percent of original size [2021-03-11 12:22:35,670 INFO L147 QuantifierPusher]: treesize reduction 10, result has 89.2 percent of original size 83 [2021-03-11 12:22:35,738 INFO L142 QuantifierPusher]: treesize reduction 57, result has 69.2 percent of original size [2021-03-11 12:22:35,739 INFO L147 QuantifierPusher]: treesize reduction 8, result has 93.8 percent of original size 120 [2021-03-11 12:22:35,821 INFO L142 QuantifierPusher]: treesize reduction 122, result has 37.1 percent of original size [2021-03-11 12:22:35,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:22:35,885 INFO L142 QuantifierPusher]: treesize reduction 95, result has 53.9 percent of original size [2021-03-11 12:22:35,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:22:35,978 INFO L142 QuantifierPusher]: treesize reduction 75, result has 61.7 percent of original size [2021-03-11 12:22:35,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-03-11 12:22:36,096 INFO L142 QuantifierPusher]: treesize reduction 75, result has 63.4 percent of original size [2021-03-11 12:22:36,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-03-11 12:22:36,129 INFO L142 QuantifierPusher]: treesize reduction 92, result has 69.0 percent of original size [2021-03-11 12:22:36,130 INFO L147 QuantifierPusher]: treesize reduction 33, result has 83.9 percent of original size 172 [2021-03-11 12:22:36,296 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2021-03-11 12:22:36,298 INFO L142 QuantifierPusher]: treesize reduction 123, result has 60.6 percent of original size [2021-03-11 12:22:36,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-03-11 12:22:36,472 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2021-03-11 12:22:36,473 INFO L142 QuantifierPusher]: treesize reduction 48, result has 42.9 percent of original size [2021-03-11 12:22:36,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:22:36,532 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:22:36,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:22:36,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:36,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:36,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947162762] [2021-03-11 12:22:36,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:36,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:22:36,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079281141] [2021-03-11 12:22:36,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:22:36,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:22:36,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:22:36,568 INFO L87 Difference]: Start difference. First operand 12861 states and 42602 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:37,347 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-03-11 12:22:37,602 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2021-03-11 12:22:37,880 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-03-11 12:22:38,421 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2021-03-11 12:22:38,773 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-11 12:22:39,272 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2021-03-11 12:22:39,666 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-03-11 12:22:39,927 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2021-03-11 12:22:40,171 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:22:40,495 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-03-11 12:22:40,774 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-03-11 12:22:41,191 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2021-03-11 12:22:41,436 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-03-11 12:22:41,724 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-03-11 12:22:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:42,075 INFO L93 Difference]: Finished difference Result 14719 states and 48196 transitions. [2021-03-11 12:22:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:22:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:42,102 INFO L225 Difference]: With dead ends: 14719 [2021-03-11 12:22:42,102 INFO L226 Difference]: Without dead ends: 14719 [2021-03-11 12:22:42,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3974.2ms TimeCoverageRelationStatistics Valid=379, Invalid=953, Unknown=0, NotChecked=0, Total=1332 [2021-03-11 12:22:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14719 states. [2021-03-11 12:22:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14719 to 12908. [2021-03-11 12:22:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12908 states, 12904 states have (on average 3.3123837569745813) internal successors, (42743), 12907 states have internal predecessors, (42743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12908 states to 12908 states and 42743 transitions. [2021-03-11 12:22:42,290 INFO L78 Accepts]: Start accepts. Automaton has 12908 states and 42743 transitions. Word has length 31 [2021-03-11 12:22:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:42,290 INFO L480 AbstractCegarLoop]: Abstraction has 12908 states and 42743 transitions. [2021-03-11 12:22:42,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12908 states and 42743 transitions. [2021-03-11 12:22:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:42,302 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:42,302 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:42,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 12:22:42,302 INFO L428 AbstractCegarLoop]: === Iteration 129 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:42,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:42,302 INFO L82 PathProgramCache]: Analyzing trace with hash 404527355, now seen corresponding path program 76 times [2021-03-11 12:22:42,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:42,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487280250] [2021-03-11 12:22:42,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:42,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:22:42,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:22:42,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:22:42,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:22:42,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:22:42,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:42,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:22:42,555 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:22:42,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:22:42,598 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.6 percent of original size [2021-03-11 12:22:42,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:22:42,644 INFO L142 QuantifierPusher]: treesize reduction 52, result has 71.3 percent of original size [2021-03-11 12:22:42,645 INFO L147 QuantifierPusher]: treesize reduction 19, result has 85.3 percent of original size 110 [2021-03-11 12:22:42,713 INFO L142 QuantifierPusher]: treesize reduction 189, result has 69.6 percent of original size [2021-03-11 12:22:42,717 INFO L147 QuantifierPusher]: treesize reduction 30, result has 93.1 percent of original size 402 [2021-03-11 12:22:42,842 INFO L142 QuantifierPusher]: treesize reduction 146, result has 41.6 percent of original size [2021-03-11 12:22:42,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-03-11 12:22:42,929 INFO L142 QuantifierPusher]: treesize reduction 145, result has 50.5 percent of original size [2021-03-11 12:22:42,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-03-11 12:22:43,056 INFO L142 QuantifierPusher]: treesize reduction 92, result has 67.5 percent of original size [2021-03-11 12:22:43,057 INFO L147 QuantifierPusher]: treesize reduction 9, result has 95.3 percent of original size 182 [2021-03-11 12:22:43,201 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2021-03-11 12:22:43,204 INFO L142 QuantifierPusher]: treesize reduction 101, result has 65.4 percent of original size [2021-03-11 12:22:43,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-03-11 12:22:43,244 INFO L142 QuantifierPusher]: treesize reduction 156, result has 60.0 percent of original size [2021-03-11 12:22:43,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-03-11 12:22:43,425 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 42 [2021-03-11 12:22:43,426 INFO L142 QuantifierPusher]: treesize reduction 52, result has 46.4 percent of original size [2021-03-11 12:22:43,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:22:43,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:22:43,501 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:22:43,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:22:43,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:43,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:43,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:43,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:43,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487280250] [2021-03-11 12:22:43,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:43,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:22:43,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347283678] [2021-03-11 12:22:43,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:22:43,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:43,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:22:43,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:22:43,544 INFO L87 Difference]: Start difference. First operand 12908 states and 42743 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:44,734 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-03-11 12:22:45,284 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-03-11 12:22:45,699 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-03-11 12:22:46,480 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-03-11 12:22:46,669 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2021-03-11 12:22:47,083 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-11 12:22:47,312 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2021-03-11 12:22:48,083 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-03-11 12:22:48,359 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2021-03-11 12:22:48,974 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-03-11 12:22:49,222 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-03-11 12:22:49,561 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-03-11 12:22:49,878 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-03-11 12:22:50,354 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-03-11 12:22:50,588 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-03-11 12:22:50,878 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2021-03-11 12:22:51,142 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-11 12:22:51,572 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-03-11 12:22:51,899 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-03-11 12:22:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:52,277 INFO L93 Difference]: Finished difference Result 15829 states and 51536 transitions. [2021-03-11 12:22:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 12:22:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:52,300 INFO L225 Difference]: With dead ends: 15829 [2021-03-11 12:22:52,300 INFO L226 Difference]: Without dead ends: 15829 [2021-03-11 12:22:52,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 5924.4ms TimeCoverageRelationStatistics Valid=776, Invalid=1774, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 12:22:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15829 states. [2021-03-11 12:22:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15829 to 13071. [2021-03-11 12:22:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13071 states, 13067 states have (on average 3.3115481747914592) internal successors, (43272), 13070 states have internal predecessors, (43272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 43272 transitions. [2021-03-11 12:22:52,472 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 43272 transitions. Word has length 31 [2021-03-11 12:22:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:52,473 INFO L480 AbstractCegarLoop]: Abstraction has 13071 states and 43272 transitions. [2021-03-11 12:22:52,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 43272 transitions. [2021-03-11 12:22:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:52,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:52,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:52,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 12:22:52,485 INFO L428 AbstractCegarLoop]: === Iteration 130 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1653205681, now seen corresponding path program 77 times [2021-03-11 12:22:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:52,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117446968] [2021-03-11 12:22:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:52,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:22:52,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:52,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:22:52,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:52,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:52,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:52,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:52,708 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:22:52,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:52,759 INFO L142 QuantifierPusher]: treesize reduction 15, result has 71.2 percent of original size [2021-03-11 12:22:52,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:22:52,803 INFO L142 QuantifierPusher]: treesize reduction 23, result has 73.6 percent of original size [2021-03-11 12:22:52,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:22:52,859 INFO L142 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size [2021-03-11 12:22:52,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:22:52,877 INFO L142 QuantifierPusher]: treesize reduction 23, result has 72.3 percent of original size [2021-03-11 12:22:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:22:52,935 INFO L142 QuantifierPusher]: treesize reduction 39, result has 73.8 percent of original size [2021-03-11 12:22:52,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:22:53,024 INFO L142 QuantifierPusher]: treesize reduction 41, result has 73.4 percent of original size [2021-03-11 12:22:53,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:22:53,128 INFO L142 QuantifierPusher]: treesize reduction 39, result has 73.8 percent of original size [2021-03-11 12:22:53,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:22:53,221 INFO L142 QuantifierPusher]: treesize reduction 57, result has 66.1 percent of original size [2021-03-11 12:22:53,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:22:53,321 INFO L142 QuantifierPusher]: treesize reduction 55, result has 69.9 percent of original size [2021-03-11 12:22:53,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-03-11 12:22:53,431 INFO L142 QuantifierPusher]: treesize reduction 40, result has 50.0 percent of original size [2021-03-11 12:22:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:22:53,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:22:53,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:22:53,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:53,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:53,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117446968] [2021-03-11 12:22:53,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:53,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:22:53,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213495268] [2021-03-11 12:22:53,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:22:53,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:53,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:22:53,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:22:53,534 INFO L87 Difference]: Start difference. First operand 13071 states and 43272 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:54,377 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-03-11 12:22:54,653 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-03-11 12:22:55,121 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-03-11 12:22:55,465 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-03-11 12:22:55,834 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-03-11 12:22:56,300 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-03-11 12:22:56,687 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-03-11 12:22:56,891 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-03-11 12:22:57,191 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-03-11 12:22:57,461 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:22:57,739 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-03-11 12:22:58,157 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-03-11 12:22:58,348 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-03-11 12:22:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:22:58,677 INFO L93 Difference]: Finished difference Result 14821 states and 48526 transitions. [2021-03-11 12:22:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:22:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:22:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:22:58,700 INFO L225 Difference]: With dead ends: 14821 [2021-03-11 12:22:58,700 INFO L226 Difference]: Without dead ends: 14821 [2021-03-11 12:22:58,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3397.6ms TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:22:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14821 states. [2021-03-11 12:22:58,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14821 to 13078. [2021-03-11 12:22:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13078 states, 13074 states have (on average 3.3113813675998163) internal successors, (43293), 13077 states have internal predecessors, (43293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 43293 transitions. [2021-03-11 12:22:58,865 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 43293 transitions. Word has length 31 [2021-03-11 12:22:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:22:58,865 INFO L480 AbstractCegarLoop]: Abstraction has 13078 states and 43293 transitions. [2021-03-11 12:22:58,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:22:58,865 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 43293 transitions. [2021-03-11 12:22:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:22:58,877 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:22:58,877 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:22:58,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 12:22:58,877 INFO L428 AbstractCegarLoop]: === Iteration 131 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:22:58,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:22:58,877 INFO L82 PathProgramCache]: Analyzing trace with hash 446900757, now seen corresponding path program 78 times [2021-03-11 12:22:58,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:22:58,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156125069] [2021-03-11 12:22:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:22:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:22:58,916 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:22:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:22:58,929 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:22:58,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:22:58,948 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:22:58,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:22:58,966 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:22:58,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:22:58,989 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:22:58,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:22:59,013 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:22:59,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:22:59,037 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:22:59,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:22:59,064 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.9 percent of original size [2021-03-11 12:22:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:22:59,094 INFO L142 QuantifierPusher]: treesize reduction 18, result has 73.5 percent of original size [2021-03-11 12:22:59,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:22:59,144 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-03-11 12:22:59,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:22:59,161 INFO L142 QuantifierPusher]: treesize reduction 25, result has 66.2 percent of original size [2021-03-11 12:22:59,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:22:59,202 INFO L142 QuantifierPusher]: treesize reduction 64, result has 67.2 percent of original size [2021-03-11 12:22:59,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:22:59,319 INFO L142 QuantifierPusher]: treesize reduction 67, result has 68.2 percent of original size [2021-03-11 12:22:59,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-03-11 12:22:59,453 INFO L142 QuantifierPusher]: treesize reduction 61, result has 70.4 percent of original size [2021-03-11 12:22:59,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-03-11 12:22:59,486 INFO L142 QuantifierPusher]: treesize reduction 79, result has 65.4 percent of original size [2021-03-11 12:22:59,487 INFO L147 QuantifierPusher]: treesize reduction 5, result has 96.6 percent of original size 144 [2021-03-11 12:22:59,617 INFO L142 QuantifierPusher]: treesize reduction 38, result has 58.7 percent of original size [2021-03-11 12:22:59,618 INFO L147 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size 49 [2021-03-11 12:22:59,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:59,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:22:59,720 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:22:59,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:22:59,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:59,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:59,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:22:59,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:22:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:22:59,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156125069] [2021-03-11 12:22:59,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:22:59,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:22:59,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320823766] [2021-03-11 12:22:59,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:22:59,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:22:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:22:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:22:59,763 INFO L87 Difference]: Start difference. First operand 13078 states and 43293 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:00,974 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-03-11 12:23:01,159 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-03-11 12:23:01,552 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-03-11 12:23:02,263 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-03-11 12:23:02,771 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-03-11 12:23:03,241 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2021-03-11 12:23:04,049 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 69 [2021-03-11 12:23:04,293 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-03-11 12:23:04,575 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-03-11 12:23:04,800 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-03-11 12:23:05,081 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-11 12:23:05,428 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-03-11 12:23:05,888 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:23:06,212 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2021-03-11 12:23:06,557 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2021-03-11 12:23:06,976 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-03-11 12:23:07,266 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2021-03-11 12:23:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:07,533 INFO L93 Difference]: Finished difference Result 15949 states and 51916 transitions. [2021-03-11 12:23:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:23:07,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:07,559 INFO L225 Difference]: With dead ends: 15949 [2021-03-11 12:23:07,559 INFO L226 Difference]: Without dead ends: 15949 [2021-03-11 12:23:07,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4568.6ms TimeCoverageRelationStatistics Valid=607, Invalid=1463, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:23:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15949 states. [2021-03-11 12:23:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15949 to 13061. [2021-03-11 12:23:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13061 states, 13057 states have (on average 3.3117867810369916) internal successors, (43242), 13060 states have internal predecessors, (43242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:07,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13061 states to 13061 states and 43242 transitions. [2021-03-11 12:23:07,736 INFO L78 Accepts]: Start accepts. Automaton has 13061 states and 43242 transitions. Word has length 31 [2021-03-11 12:23:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:07,736 INFO L480 AbstractCegarLoop]: Abstraction has 13061 states and 43242 transitions. [2021-03-11 12:23:07,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:07,736 INFO L276 IsEmpty]: Start isEmpty. Operand 13061 states and 43242 transitions. [2021-03-11 12:23:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:07,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:07,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:07,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 12:23:07,748 INFO L428 AbstractCegarLoop]: === Iteration 132 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1173073137, now seen corresponding path program 79 times [2021-03-11 12:23:07,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:07,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656225661] [2021-03-11 12:23:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:07,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:23:07,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:23:07,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:23:07,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:07,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:07,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:07,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:07,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:23:07,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:07,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:23:07,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:08,030 INFO L142 QuantifierPusher]: treesize reduction 30, result has 68.1 percent of original size [2021-03-11 12:23:08,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 12:23:08,091 INFO L142 QuantifierPusher]: treesize reduction 17, result has 78.2 percent of original size [2021-03-11 12:23:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:23:08,108 INFO L142 QuantifierPusher]: treesize reduction 17, result has 76.4 percent of original size [2021-03-11 12:23:08,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:23:08,164 INFO L142 QuantifierPusher]: treesize reduction 40, result has 73.7 percent of original size [2021-03-11 12:23:08,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:23:08,252 INFO L142 QuantifierPusher]: treesize reduction 40, result has 73.7 percent of original size [2021-03-11 12:23:08,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:23:08,254 INFO L142 QuantifierPusher]: treesize reduction 49, result has 71.0 percent of original size [2021-03-11 12:23:08,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:23:08,353 INFO L142 QuantifierPusher]: treesize reduction 29, result has 51.7 percent of original size [2021-03-11 12:23:08,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:23:08,400 INFO L142 QuantifierPusher]: treesize reduction 56, result has 33.3 percent of original size [2021-03-11 12:23:08,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:23:08,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:23:08,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:23:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:08,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:08,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656225661] [2021-03-11 12:23:08,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:08,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:23:08,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609595871] [2021-03-11 12:23:08,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:23:08,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:23:08,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:23:08,481 INFO L87 Difference]: Start difference. First operand 13061 states and 43242 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:08,919 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-03-11 12:23:09,312 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-03-11 12:23:09,576 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-03-11 12:23:10,007 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-03-11 12:23:10,345 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2021-03-11 12:23:11,112 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-03-11 12:23:11,313 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-03-11 12:23:11,588 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-03-11 12:23:11,815 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-03-11 12:23:12,014 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-03-11 12:23:12,493 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-03-11 12:23:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:12,907 INFO L93 Difference]: Finished difference Result 14839 states and 48582 transitions. [2021-03-11 12:23:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-11 12:23:12,909 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:12,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:12,931 INFO L225 Difference]: With dead ends: 14839 [2021-03-11 12:23:12,932 INFO L226 Difference]: Without dead ends: 14839 [2021-03-11 12:23:12,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2654.6ms TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:23:12,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14839 states. [2021-03-11 12:23:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14839 to 13076. [2021-03-11 12:23:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13076 states, 13072 states have (on average 3.311582007343941) internal successors, (43289), 13075 states have internal predecessors, (43289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:13,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13076 states to 13076 states and 43289 transitions. [2021-03-11 12:23:13,102 INFO L78 Accepts]: Start accepts. Automaton has 13076 states and 43289 transitions. Word has length 31 [2021-03-11 12:23:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:13,102 INFO L480 AbstractCegarLoop]: Abstraction has 13076 states and 43289 transitions. [2021-03-11 12:23:13,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13076 states and 43289 transitions. [2021-03-11 12:23:13,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:13,114 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:13,114 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:13,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 12:23:13,114 INFO L428 AbstractCegarLoop]: === Iteration 133 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:13,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1666088391, now seen corresponding path program 80 times [2021-03-11 12:23:13,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:13,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864109076] [2021-03-11 12:23:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:13,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:23:13,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:23:13,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:23:13,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:23:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:23:13,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:23:13,370 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.3 percent of original size [2021-03-11 12:23:13,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:23:13,418 INFO L142 QuantifierPusher]: treesize reduction 25, result has 65.3 percent of original size [2021-03-11 12:23:13,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:23:13,470 INFO L142 QuantifierPusher]: treesize reduction 150, result has 69.6 percent of original size [2021-03-11 12:23:13,472 INFO L147 QuantifierPusher]: treesize reduction 14, result has 95.9 percent of original size 330 [2021-03-11 12:23:13,566 INFO L142 QuantifierPusher]: treesize reduction 17, result has 83.3 percent of original size [2021-03-11 12:23:13,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:23:13,585 INFO L142 QuantifierPusher]: treesize reduction 17, result has 83.0 percent of original size [2021-03-11 12:23:13,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:23:13,668 INFO L142 QuantifierPusher]: treesize reduction 51, result has 73.3 percent of original size [2021-03-11 12:23:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:23:13,786 INFO L142 QuantifierPusher]: treesize reduction 29, result has 52.5 percent of original size [2021-03-11 12:23:13,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:23:13,820 INFO L142 QuantifierPusher]: treesize reduction 38, result has 44.9 percent of original size [2021-03-11 12:23:13,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:23:13,868 INFO L142 QuantifierPusher]: treesize reduction 58, result has 37.6 percent of original size [2021-03-11 12:23:13,869 INFO L147 QuantifierPusher]: treesize reduction 7, result has 80.0 percent of original size 28 [2021-03-11 12:23:13,923 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:23:13,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:23:13,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:13,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864109076] [2021-03-11 12:23:13,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:13,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 12:23:13,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606053268] [2021-03-11 12:23:13,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 12:23:13,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:13,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 12:23:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-03-11 12:23:13,959 INFO L87 Difference]: Start difference. First operand 13076 states and 43289 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:14,822 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2021-03-11 12:23:15,101 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2021-03-11 12:23:15,249 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-11 12:23:15,541 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2021-03-11 12:23:15,913 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-03-11 12:23:16,291 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2021-03-11 12:23:17,293 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-03-11 12:23:17,495 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-11 12:23:17,666 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-03-11 12:23:17,853 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-03-11 12:23:18,076 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-03-11 12:23:18,303 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2021-03-11 12:23:18,527 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-11 12:23:18,770 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-03-11 12:23:18,996 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-03-11 12:23:19,242 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-11 12:23:19,514 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-03-11 12:23:20,030 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-03-11 12:23:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:20,472 INFO L93 Difference]: Finished difference Result 15117 states and 49458 transitions. [2021-03-11 12:23:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-11 12:23:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:20,496 INFO L225 Difference]: With dead ends: 15117 [2021-03-11 12:23:20,496 INFO L226 Difference]: Without dead ends: 15117 [2021-03-11 12:23:20,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4313.4ms TimeCoverageRelationStatistics Valid=457, Invalid=1025, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:23:20,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2021-03-11 12:23:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 13156. [2021-03-11 12:23:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13156 states, 13152 states have (on average 3.312728102189781) internal successors, (43569), 13155 states have internal predecessors, (43569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13156 states to 13156 states and 43569 transitions. [2021-03-11 12:23:20,716 INFO L78 Accepts]: Start accepts. Automaton has 13156 states and 43569 transitions. Word has length 31 [2021-03-11 12:23:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:20,716 INFO L480 AbstractCegarLoop]: Abstraction has 13156 states and 43569 transitions. [2021-03-11 12:23:20,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 13156 states and 43569 transitions. [2021-03-11 12:23:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:20,727 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:20,727 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:20,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 12:23:20,727 INFO L428 AbstractCegarLoop]: === Iteration 134 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1144972789, now seen corresponding path program 81 times [2021-03-11 12:23:20,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611973159] [2021-03-11 12:23:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:20,753 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:23:20,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:23:20,766 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:23:20,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:23:20,786 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:23:20,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:23:20,805 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:23:20,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:23:20,828 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:23:20,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:23:20,853 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:23:20,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:23:20,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:23:20,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:23:20,905 INFO L142 QuantifierPusher]: treesize reduction 18, result has 64.0 percent of original size [2021-03-11 12:23:20,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-03-11 12:23:20,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 12:23:20,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 12:23:20,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 12:23:20,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:23:20,985 INFO L142 QuantifierPusher]: treesize reduction 28, result has 60.6 percent of original size [2021-03-11 12:23:20,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:23:21,027 INFO L142 QuantifierPusher]: treesize reduction 67, result has 55.9 percent of original size [2021-03-11 12:23:21,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:23:21,115 INFO L142 QuantifierPusher]: treesize reduction 51, result has 69.1 percent of original size [2021-03-11 12:23:21,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:23:21,213 INFO L142 QuantifierPusher]: treesize reduction 46, result has 71.1 percent of original size [2021-03-11 12:23:21,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:23:21,242 INFO L142 QuantifierPusher]: treesize reduction 22, result has 62.7 percent of original size [2021-03-11 12:23:21,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:21,289 INFO L142 QuantifierPusher]: treesize reduction 42, result has 50.6 percent of original size [2021-03-11 12:23:21,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:23:21,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:21,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:23:21,378 INFO L142 QuantifierPusher]: treesize reduction 10, result has 76.7 percent of original size [2021-03-11 12:23:21,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:23:21,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:21,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:21,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:21,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:21,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611973159] [2021-03-11 12:23:21,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:21,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:23:21,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095937223] [2021-03-11 12:23:21,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:23:21,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:23:21,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:23:21,423 INFO L87 Difference]: Start difference. First operand 13156 states and 43569 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:22,576 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2021-03-11 12:23:23,087 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2021-03-11 12:23:23,223 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-03-11 12:23:23,578 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-03-11 12:23:24,017 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-03-11 12:23:24,478 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-03-11 12:23:24,662 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2021-03-11 12:23:25,104 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2021-03-11 12:23:25,298 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2021-03-11 12:23:26,158 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 58 [2021-03-11 12:23:26,518 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-03-11 12:23:26,894 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2021-03-11 12:23:27,163 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2021-03-11 12:23:27,541 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-03-11 12:23:27,717 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-03-11 12:23:28,040 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2021-03-11 12:23:28,401 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2021-03-11 12:23:28,726 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2021-03-11 12:23:28,941 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 56 [2021-03-11 12:23:29,244 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-03-11 12:23:29,493 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2021-03-11 12:23:29,971 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-03-11 12:23:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:30,367 INFO L93 Difference]: Finished difference Result 16177 states and 52622 transitions. [2021-03-11 12:23:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-11 12:23:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:30,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:30,391 INFO L225 Difference]: With dead ends: 16177 [2021-03-11 12:23:30,392 INFO L226 Difference]: Without dead ends: 16177 [2021-03-11 12:23:30,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 5437.4ms TimeCoverageRelationStatistics Valid=808, Invalid=1844, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 12:23:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16177 states. [2021-03-11 12:23:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16177 to 13061. [2021-03-11 12:23:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13061 states, 13057 states have (on average 3.313318526460902) internal successors, (43262), 13060 states have internal predecessors, (43262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13061 states to 13061 states and 43262 transitions. [2021-03-11 12:23:30,562 INFO L78 Accepts]: Start accepts. Automaton has 13061 states and 43262 transitions. Word has length 31 [2021-03-11 12:23:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:30,562 INFO L480 AbstractCegarLoop]: Abstraction has 13061 states and 43262 transitions. [2021-03-11 12:23:30,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13061 states and 43262 transitions. [2021-03-11 12:23:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:30,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:30,573 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:30,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 12:23:30,574 INFO L428 AbstractCegarLoop]: === Iteration 135 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 575099943, now seen corresponding path program 82 times [2021-03-11 12:23:30,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:30,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325919923] [2021-03-11 12:23:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:30,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:30,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:23:30,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:30,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-03-11 12:23:30,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:30,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 12:23:30,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:30,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:23:30,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:30,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:23:30,790 INFO L142 QuantifierPusher]: treesize reduction 26, result has 62.3 percent of original size [2021-03-11 12:23:30,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:23:30,836 INFO L142 QuantifierPusher]: treesize reduction 44, result has 49.4 percent of original size [2021-03-11 12:23:30,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:23:30,884 INFO L142 QuantifierPusher]: treesize reduction 64, result has 52.6 percent of original size [2021-03-11 12:23:30,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:23:30,955 INFO L142 QuantifierPusher]: treesize reduction 64, result has 52.6 percent of original size [2021-03-11 12:23:30,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:23:31,024 INFO L142 QuantifierPusher]: treesize reduction 65, result has 62.0 percent of original size [2021-03-11 12:23:31,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-03-11 12:23:31,105 INFO L142 QuantifierPusher]: treesize reduction 97, result has 42.3 percent of original size [2021-03-11 12:23:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-03-11 12:23:31,107 INFO L142 QuantifierPusher]: treesize reduction 79, result has 60.1 percent of original size [2021-03-11 12:23:31,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-11 12:23:31,207 INFO L142 QuantifierPusher]: treesize reduction 73, result has 61.2 percent of original size [2021-03-11 12:23:31,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:23:31,316 INFO L142 QuantifierPusher]: treesize reduction 60, result has 68.6 percent of original size [2021-03-11 12:23:31,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-03-11 12:23:31,346 INFO L142 QuantifierPusher]: treesize reduction 87, result has 63.0 percent of original size [2021-03-11 12:23:31,347 INFO L147 QuantifierPusher]: treesize reduction 6, result has 95.9 percent of original size 142 [2021-03-11 12:23:31,476 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:23:31,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:23:31,513 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:23:31,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:23:31,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:23:31,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:23:31,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:31,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:31,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:31,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325919923] [2021-03-11 12:23:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:23:31,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563042281] [2021-03-11 12:23:31,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:23:31,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:23:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:23:31,587 INFO L87 Difference]: Start difference. First operand 13061 states and 43262 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:32,434 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-03-11 12:23:32,737 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-03-11 12:23:33,037 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-03-11 12:23:33,554 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-03-11 12:23:33,909 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-11 12:23:34,381 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2021-03-11 12:23:34,873 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-03-11 12:23:35,115 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:23:35,414 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-03-11 12:23:35,611 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2021-03-11 12:23:35,851 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-03-11 12:23:36,091 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2021-03-11 12:23:36,479 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 79 [2021-03-11 12:23:36,742 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2021-03-11 12:23:37,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:37,030 INFO L93 Difference]: Finished difference Result 15438 states and 50395 transitions. [2021-03-11 12:23:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:23:37,032 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:37,054 INFO L225 Difference]: With dead ends: 15438 [2021-03-11 12:23:37,054 INFO L226 Difference]: Without dead ends: 15438 [2021-03-11 12:23:37,054 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3954.7ms TimeCoverageRelationStatistics Valid=380, Invalid=880, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:23:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15438 states. [2021-03-11 12:23:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15438 to 13224. [2021-03-11 12:23:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13224 states, 13220 states have (on average 3.3094553706505296) internal successors, (43751), 13223 states have internal predecessors, (43751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13224 states to 13224 states and 43751 transitions. [2021-03-11 12:23:37,219 INFO L78 Accepts]: Start accepts. Automaton has 13224 states and 43751 transitions. Word has length 31 [2021-03-11 12:23:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:37,219 INFO L480 AbstractCegarLoop]: Abstraction has 13224 states and 43751 transitions. [2021-03-11 12:23:37,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13224 states and 43751 transitions. [2021-03-11 12:23:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:37,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:37,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:37,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 12:23:37,231 INFO L428 AbstractCegarLoop]: === Iteration 136 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 586992863, now seen corresponding path program 83 times [2021-03-11 12:23:37,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:37,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434799009] [2021-03-11 12:23:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:37,258 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:23:37,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:23:37,272 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:23:37,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:23:37,291 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:23:37,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:23:37,310 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:23:37,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:23:37,333 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:23:37,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:23:37,358 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:23:37,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:23:37,383 INFO L142 QuantifierPusher]: treesize reduction 21, result has 61.8 percent of original size [2021-03-11 12:23:37,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:23:37,411 INFO L142 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-03-11 12:23:37,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:23:37,479 INFO L142 QuantifierPusher]: treesize reduction 40, result has 64.6 percent of original size [2021-03-11 12:23:37,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-03-11 12:23:37,544 INFO L142 QuantifierPusher]: treesize reduction 45, result has 72.6 percent of original size [2021-03-11 12:23:37,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-03-11 12:23:37,638 INFO L142 QuantifierPusher]: treesize reduction 74, result has 58.7 percent of original size [2021-03-11 12:23:37,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-03-11 12:23:37,661 INFO L142 QuantifierPusher]: treesize reduction 75, result has 63.9 percent of original size [2021-03-11 12:23:37,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-03-11 12:23:37,778 INFO L142 QuantifierPusher]: treesize reduction 62, result has 67.7 percent of original size [2021-03-11 12:23:37,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-03-11 12:23:37,949 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-03-11 12:23:37,951 INFO L142 QuantifierPusher]: treesize reduction 62, result has 70.0 percent of original size [2021-03-11 12:23:37,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-03-11 12:23:37,988 INFO L142 QuantifierPusher]: treesize reduction 93, result has 61.1 percent of original size [2021-03-11 12:23:37,989 INFO L147 QuantifierPusher]: treesize reduction 7, result has 95.2 percent of original size 139 [2021-03-11 12:23:38,117 INFO L142 QuantifierPusher]: treesize reduction 30, result has 55.2 percent of original size [2021-03-11 12:23:38,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:38,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:38,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:23:38,184 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:23:38,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:23:38,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:38,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:38,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:38,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:38,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434799009] [2021-03-11 12:23:38,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:38,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:23:38,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384447425] [2021-03-11 12:23:38,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:23:38,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:38,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:23:38,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:23:38,234 INFO L87 Difference]: Start difference. First operand 13224 states and 43751 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:39,396 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-03-11 12:23:39,577 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:23:39,847 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-03-11 12:23:40,067 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-03-11 12:23:40,473 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-03-11 12:23:41,237 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-11 12:23:41,679 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-03-11 12:23:42,422 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-03-11 12:23:42,678 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-03-11 12:23:42,972 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-03-11 12:23:43,243 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2021-03-11 12:23:43,511 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-03-11 12:23:43,821 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2021-03-11 12:23:44,240 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-03-11 12:23:44,520 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2021-03-11 12:23:44,919 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2021-03-11 12:23:45,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:45,187 INFO L93 Difference]: Finished difference Result 16612 states and 53925 transitions. [2021-03-11 12:23:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 12:23:45,189 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:45,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:45,210 INFO L225 Difference]: With dead ends: 16612 [2021-03-11 12:23:45,210 INFO L226 Difference]: Without dead ends: 16612 [2021-03-11 12:23:45,211 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4596.0ms TimeCoverageRelationStatistics Valid=592, Invalid=1388, Unknown=0, NotChecked=0, Total=1980 [2021-03-11 12:23:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16612 states. [2021-03-11 12:23:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16612 to 13200. [2021-03-11 12:23:45,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13200 states, 13196 states have (on average 3.3100181873294936) internal successors, (43679), 13199 states have internal predecessors, (43679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13200 states to 13200 states and 43679 transitions. [2021-03-11 12:23:45,377 INFO L78 Accepts]: Start accepts. Automaton has 13200 states and 43679 transitions. Word has length 31 [2021-03-11 12:23:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:45,377 INFO L480 AbstractCegarLoop]: Abstraction has 13200 states and 43679 transitions. [2021-03-11 12:23:45,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13200 states and 43679 transitions. [2021-03-11 12:23:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:45,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:45,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:45,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 12:23:45,389 INFO L428 AbstractCegarLoop]: === Iteration 137 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1520427431, now seen corresponding path program 84 times [2021-03-11 12:23:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:45,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207555214] [2021-03-11 12:23:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:45,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:23:45,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:23:45,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:23:45,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:45,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:45,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:45,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:23:45,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:23:45,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:23:45,637 INFO L142 QuantifierPusher]: treesize reduction 62, result has 46.1 percent of original size [2021-03-11 12:23:45,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:23:45,686 INFO L142 QuantifierPusher]: treesize reduction 62, result has 46.1 percent of original size [2021-03-11 12:23:45,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:23:45,737 INFO L142 QuantifierPusher]: treesize reduction 62, result has 55.4 percent of original size [2021-03-11 12:23:45,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:23:45,803 INFO L142 QuantifierPusher]: treesize reduction 68, result has 55.3 percent of original size [2021-03-11 12:23:45,804 INFO L147 QuantifierPusher]: treesize reduction 5, result has 94.0 percent of original size 79 [2021-03-11 12:23:45,875 INFO L142 QuantifierPusher]: treesize reduction 54, result has 60.6 percent of original size [2021-03-11 12:23:45,876 INFO L147 QuantifierPusher]: treesize reduction 5, result has 94.0 percent of original size 78 [2021-03-11 12:23:45,942 INFO L142 QuantifierPusher]: treesize reduction 58, result has 58.9 percent of original size [2021-03-11 12:23:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:23:46,020 INFO L142 QuantifierPusher]: treesize reduction 65, result has 58.3 percent of original size [2021-03-11 12:23:46,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:23:46,109 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:23:46,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:23:46,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:23:46,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:23:46,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:46,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207555214] [2021-03-11 12:23:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:46,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:23:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198370302] [2021-03-11 12:23:46,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:23:46,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:46,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:23:46,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:23:46,187 INFO L87 Difference]: Start difference. First operand 13200 states and 43679 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:47,076 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-03-11 12:23:47,367 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-03-11 12:23:48,047 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-03-11 12:23:48,372 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-03-11 12:23:48,805 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-03-11 12:23:49,221 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-03-11 12:23:49,520 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2021-03-11 12:23:49,736 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2021-03-11 12:23:50,092 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2021-03-11 12:23:50,325 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2021-03-11 12:23:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:23:50,721 INFO L93 Difference]: Finished difference Result 15335 states and 50086 transitions. [2021-03-11 12:23:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-11 12:23:50,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:23:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:23:50,743 INFO L225 Difference]: With dead ends: 15335 [2021-03-11 12:23:50,743 INFO L226 Difference]: Without dead ends: 15335 [2021-03-11 12:23:50,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2821.0ms TimeCoverageRelationStatistics Valid=295, Invalid=761, Unknown=0, NotChecked=0, Total=1056 [2021-03-11 12:23:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15335 states. [2021-03-11 12:23:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15335 to 13207. [2021-03-11 12:23:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 13203 states have (on average 3.3098538211012647) internal successors, (43700), 13206 states have internal predecessors, (43700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 43700 transitions. [2021-03-11 12:23:50,909 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 43700 transitions. Word has length 31 [2021-03-11 12:23:50,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:23:50,909 INFO L480 AbstractCegarLoop]: Abstraction has 13207 states and 43700 transitions. [2021-03-11 12:23:50,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:50,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 43700 transitions. [2021-03-11 12:23:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:23:50,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:23:50,920 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:23:50,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 12:23:50,921 INFO L428 AbstractCegarLoop]: === Iteration 138 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:23:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:23:50,921 INFO L82 PathProgramCache]: Analyzing trace with hash -674433427, now seen corresponding path program 85 times [2021-03-11 12:23:50,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:23:50,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167088942] [2021-03-11 12:23:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:23:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:23:50,953 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:23:50,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:23:50,976 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:23:50,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:23:51,013 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:23:51,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:23:51,047 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:23:51,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:23:51,089 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:23:51,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:23:51,131 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:23:51,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:23:51,174 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:23:51,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:23:51,222 INFO L142 QuantifierPusher]: treesize reduction 93, result has 47.8 percent of original size [2021-03-11 12:23:51,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:23:51,283 INFO L142 QuantifierPusher]: treesize reduction 93, result has 47.8 percent of original size [2021-03-11 12:23:51,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-03-11 12:23:51,346 INFO L142 QuantifierPusher]: treesize reduction 93, result has 51.1 percent of original size [2021-03-11 12:23:51,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:23:51,418 INFO L142 QuantifierPusher]: treesize reduction 90, result has 51.6 percent of original size [2021-03-11 12:23:51,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-03-11 12:23:51,441 INFO L142 QuantifierPusher]: treesize reduction 88, result has 60.5 percent of original size [2021-03-11 12:23:51,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:23:51,558 INFO L142 QuantifierPusher]: treesize reduction 243, result has 61.7 percent of original size [2021-03-11 12:23:51,559 INFO L147 QuantifierPusher]: treesize reduction 48, result has 87.8 percent of original size 344 [2021-03-11 12:23:51,701 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 39 [2021-03-11 12:23:51,704 INFO L142 QuantifierPusher]: treesize reduction 97, result has 60.2 percent of original size [2021-03-11 12:23:51,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-03-11 12:23:51,833 INFO L142 QuantifierPusher]: treesize reduction 118, result has 57.2 percent of original size [2021-03-11 12:23:51,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-03-11 12:23:51,960 INFO L142 QuantifierPusher]: treesize reduction 64, result has 44.3 percent of original size [2021-03-11 12:23:51,961 INFO L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-03-11 12:23:52,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:52,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:23:52,064 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:23:52,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:23:52,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:52,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:52,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:23:52,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:23:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:23:52,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167088942] [2021-03-11 12:23:52,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:23:52,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:23:52,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465392274] [2021-03-11 12:23:52,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:23:52,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:23:52,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:23:52,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:23:52,121 INFO L87 Difference]: Start difference. First operand 13207 states and 43700 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:23:53,427 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-03-11 12:23:53,633 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-03-11 12:23:53,944 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-03-11 12:23:54,190 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-03-11 12:23:54,641 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-03-11 12:23:55,612 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2021-03-11 12:23:55,828 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-03-11 12:23:56,342 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-03-11 12:23:56,583 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2021-03-11 12:23:57,410 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2021-03-11 12:23:57,699 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2021-03-11 12:23:58,004 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2021-03-11 12:23:58,399 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-03-11 12:23:58,731 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:23:59,070 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 59 [2021-03-11 12:23:59,411 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-03-11 12:23:59,900 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2021-03-11 12:24:00,148 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2021-03-11 12:24:00,457 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2021-03-11 12:24:00,760 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-03-11 12:24:01,189 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2021-03-11 12:24:01,514 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2021-03-11 12:24:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:01,913 INFO L93 Difference]: Finished difference Result 16885 states and 54764 transitions. [2021-03-11 12:24:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 12:24:01,915 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:01,939 INFO L225 Difference]: With dead ends: 16885 [2021-03-11 12:24:01,939 INFO L226 Difference]: Without dead ends: 16885 [2021-03-11 12:24:01,939 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 6438.4ms TimeCoverageRelationStatistics Valid=794, Invalid=1858, Unknown=0, NotChecked=0, Total=2652 [2021-03-11 12:24:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16885 states. [2021-03-11 12:24:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16885 to 13070. [2021-03-11 12:24:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13070 states, 13066 states have (on average 3.313102709321904) internal successors, (43289), 13069 states have internal predecessors, (43289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13070 states to 13070 states and 43289 transitions. [2021-03-11 12:24:02,186 INFO L78 Accepts]: Start accepts. Automaton has 13070 states and 43289 transitions. Word has length 31 [2021-03-11 12:24:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:02,186 INFO L480 AbstractCegarLoop]: Abstraction has 13070 states and 43289 transitions. [2021-03-11 12:24:02,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13070 states and 43289 transitions. [2021-03-11 12:24:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:02,196 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:02,196 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:02,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 12:24:02,197 INFO L428 AbstractCegarLoop]: === Iteration 139 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1379923121, now seen corresponding path program 86 times [2021-03-11 12:24:02,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:02,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576246665] [2021-03-11 12:24:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:02,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:24:02,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:24:02,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:24:02,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:24:02,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:24:02,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:02,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:24:02,452 INFO L142 QuantifierPusher]: treesize reduction 15, result has 77.3 percent of original size [2021-03-11 12:24:02,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 12:24:02,501 INFO L142 QuantifierPusher]: treesize reduction 82, result has 53.1 percent of original size [2021-03-11 12:24:02,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:24:02,570 INFO L142 QuantifierPusher]: treesize reduction 55, result has 69.1 percent of original size [2021-03-11 12:24:02,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-03-11 12:24:02,649 INFO L142 QuantifierPusher]: treesize reduction 55, result has 68.6 percent of original size [2021-03-11 12:24:02,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-03-11 12:24:02,671 INFO L142 QuantifierPusher]: treesize reduction 73, result has 64.9 percent of original size [2021-03-11 12:24:02,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:24:02,771 INFO L142 QuantifierPusher]: treesize reduction 73, result has 64.9 percent of original size [2021-03-11 12:24:02,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-03-11 12:24:02,867 INFO L142 QuantifierPusher]: treesize reduction 156, result has 62.7 percent of original size [2021-03-11 12:24:02,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 262 [2021-03-11 12:24:03,007 INFO L142 QuantifierPusher]: treesize reduction 81, result has 64.6 percent of original size [2021-03-11 12:24:03,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-03-11 12:24:03,132 INFO L142 QuantifierPusher]: treesize reduction 83, result has 67.6 percent of original size [2021-03-11 12:24:03,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-03-11 12:24:03,275 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2021-03-11 12:24:03,276 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.9 percent of original size [2021-03-11 12:24:03,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:24:03,317 INFO L142 QuantifierPusher]: treesize reduction 23, result has 54.0 percent of original size [2021-03-11 12:24:03,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:24:03,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:24:03,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:24:03,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:03,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:03,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576246665] [2021-03-11 12:24:03,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:03,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:24:03,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519003201] [2021-03-11 12:24:03,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:24:03,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:24:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:24:03,398 INFO L87 Difference]: Start difference. First operand 13070 states and 43289 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:04,210 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2021-03-11 12:24:04,484 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-03-11 12:24:04,930 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2021-03-11 12:24:05,273 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-03-11 12:24:05,621 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-03-11 12:24:06,086 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-03-11 12:24:06,721 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2021-03-11 12:24:06,961 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2021-03-11 12:24:07,325 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-03-11 12:24:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:07,656 INFO L93 Difference]: Finished difference Result 15782 states and 51427 transitions. [2021-03-11 12:24:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 12:24:07,658 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:07,681 INFO L225 Difference]: With dead ends: 15782 [2021-03-11 12:24:07,681 INFO L226 Difference]: Without dead ends: 15782 [2021-03-11 12:24:07,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3181.6ms TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:24:07,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15782 states. [2021-03-11 12:24:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15782 to 13137. [2021-03-11 12:24:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13137 states, 13133 states have (on average 3.3115053681565523) internal successors, (43490), 13136 states have internal predecessors, (43490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13137 states to 13137 states and 43490 transitions. [2021-03-11 12:24:07,892 INFO L78 Accepts]: Start accepts. Automaton has 13137 states and 43490 transitions. Word has length 31 [2021-03-11 12:24:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:07,892 INFO L480 AbstractCegarLoop]: Abstraction has 13137 states and 43490 transitions. [2021-03-11 12:24:07,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand 13137 states and 43490 transitions. [2021-03-11 12:24:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:07,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:07,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:07,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 12:24:07,903 INFO L428 AbstractCegarLoop]: === Iteration 140 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:07,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1368030201, now seen corresponding path program 87 times [2021-03-11 12:24:07,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:07,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288345467] [2021-03-11 12:24:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:07,930 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:24:07,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:24:07,944 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:24:07,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:24:07,965 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:24:07,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:24:07,985 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-03-11 12:24:07,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:24:08,009 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:24:08,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:24:08,037 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:24:08,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:24:08,066 INFO L142 QuantifierPusher]: treesize reduction 44, result has 48.2 percent of original size [2021-03-11 12:24:08,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:24:08,129 INFO L142 QuantifierPusher]: treesize reduction 61, result has 56.1 percent of original size [2021-03-11 12:24:08,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-03-11 12:24:08,214 INFO L142 QuantifierPusher]: treesize reduction 78, result has 59.4 percent of original size [2021-03-11 12:24:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:24:08,306 INFO L142 QuantifierPusher]: treesize reduction 74, result has 57.2 percent of original size [2021-03-11 12:24:08,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:24:08,329 INFO L142 QuantifierPusher]: treesize reduction 66, result has 66.3 percent of original size [2021-03-11 12:24:08,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-03-11 12:24:08,473 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2021-03-11 12:24:08,476 INFO L142 QuantifierPusher]: treesize reduction 66, result has 66.3 percent of original size [2021-03-11 12:24:08,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-03-11 12:24:08,613 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2021-03-11 12:24:08,615 INFO L142 QuantifierPusher]: treesize reduction 53, result has 73.2 percent of original size [2021-03-11 12:24:08,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-03-11 12:24:08,756 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2021-03-11 12:24:08,758 INFO L142 QuantifierPusher]: treesize reduction 53, result has 72.8 percent of original size [2021-03-11 12:24:08,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-03-11 12:24:08,793 INFO L142 QuantifierPusher]: treesize reduction 58, result has 70.6 percent of original size [2021-03-11 12:24:08,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-03-11 12:24:08,944 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 33 [2021-03-11 12:24:08,946 INFO L142 QuantifierPusher]: treesize reduction 43, result has 60.9 percent of original size [2021-03-11 12:24:08,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:24:09,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:09,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:24:09,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:09,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:24:09,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.7 percent of original size [2021-03-11 12:24:09,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:24:09,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:24:09,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:24:09,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 12:24:09,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 12:24:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:09,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288345467] [2021-03-11 12:24:09,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:09,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-03-11 12:24:09,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660030290] [2021-03-11 12:24:09,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-11 12:24:09,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:09,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-11 12:24:09,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-03-11 12:24:09,247 INFO L87 Difference]: Start difference. First operand 13137 states and 43490 transitions. Second operand has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:09,981 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-03-11 12:24:10,274 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2021-03-11 12:24:10,596 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2021-03-11 12:24:11,165 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2021-03-11 12:24:11,593 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2021-03-11 12:24:12,078 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-03-11 12:24:12,291 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-11 12:24:12,933 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-11 12:24:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:16,191 INFO L93 Difference]: Finished difference Result 17712 states and 57893 transitions. [2021-03-11 12:24:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-11 12:24:16,193 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:16,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:16,216 INFO L225 Difference]: With dead ends: 17712 [2021-03-11 12:24:16,216 INFO L226 Difference]: Without dead ends: 17712 [2021-03-11 12:24:16,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3112.8ms TimeCoverageRelationStatistics Valid=230, Invalid=1030, Unknown=0, NotChecked=0, Total=1260 [2021-03-11 12:24:16,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17712 states. [2021-03-11 12:24:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17712 to 13185. [2021-03-11 12:24:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13185 states, 13181 states have (on average 3.3106744556558683) internal successors, (43638), 13184 states have internal predecessors, (43638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13185 states to 13185 states and 43638 transitions. [2021-03-11 12:24:16,396 INFO L78 Accepts]: Start accepts. Automaton has 13185 states and 43638 transitions. Word has length 31 [2021-03-11 12:24:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:16,396 INFO L480 AbstractCegarLoop]: Abstraction has 13185 states and 43638 transitions. [2021-03-11 12:24:16,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 13185 states and 43638 transitions. [2021-03-11 12:24:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:16,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:16,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:16,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 12:24:16,407 INFO L428 AbstractCegarLoop]: === Iteration 141 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash -434595633, now seen corresponding path program 88 times [2021-03-11 12:24:16,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:16,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516014704] [2021-03-11 12:24:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:16,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:24:16,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:24:16,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:24:16,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:16,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:16,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:16,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:16,616 INFO L142 QuantifierPusher]: treesize reduction 25, result has 59.7 percent of original size [2021-03-11 12:24:16,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:16,661 INFO L142 QuantifierPusher]: treesize reduction 66, result has 50.4 percent of original size [2021-03-11 12:24:16,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:24:16,725 INFO L142 QuantifierPusher]: treesize reduction 45, result has 69.2 percent of original size [2021-03-11 12:24:16,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:24:16,808 INFO L142 QuantifierPusher]: treesize reduction 39, result has 70.5 percent of original size [2021-03-11 12:24:16,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-03-11 12:24:16,828 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:24:16,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:24:16,930 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:24:16,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:24:17,035 INFO L142 QuantifierPusher]: treesize reduction 49, result has 70.3 percent of original size [2021-03-11 12:24:17,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-03-11 12:24:17,147 INFO L142 QuantifierPusher]: treesize reduction 49, result has 69.8 percent of original size [2021-03-11 12:24:17,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:24:17,257 INFO L142 QuantifierPusher]: treesize reduction 69, result has 62.9 percent of original size [2021-03-11 12:24:17,258 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.0 percent of original size 110 [2021-03-11 12:24:17,377 INFO L142 QuantifierPusher]: treesize reduction 67, result has 66.7 percent of original size [2021-03-11 12:24:17,378 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.8 percent of original size 127 [2021-03-11 12:24:17,513 INFO L142 QuantifierPusher]: treesize reduction 54, result has 40.0 percent of original size [2021-03-11 12:24:17,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:24:17,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:24:17,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:24:17,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:17,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:17,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516014704] [2021-03-11 12:24:17,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:17,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:24:17,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538177906] [2021-03-11 12:24:17,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:24:17,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:17,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:24:17,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:24:17,618 INFO L87 Difference]: Start difference. First operand 13185 states and 43638 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:18,271 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-03-11 12:24:18,509 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-03-11 12:24:18,775 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2021-03-11 12:24:19,202 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-03-11 12:24:19,536 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2021-03-11 12:24:19,885 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-11 12:24:20,347 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-03-11 12:24:20,908 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2021-03-11 12:24:21,129 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-03-11 12:24:21,517 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-03-11 12:24:21,724 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2021-03-11 12:24:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:22,121 INFO L93 Difference]: Finished difference Result 15839 states and 51602 transitions. [2021-03-11 12:24:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-11 12:24:22,123 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:22,144 INFO L225 Difference]: With dead ends: 15839 [2021-03-11 12:24:22,144 INFO L226 Difference]: Without dead ends: 15839 [2021-03-11 12:24:22,145 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 3251.2ms TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2021-03-11 12:24:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15839 states. [2021-03-11 12:24:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15839 to 13192. [2021-03-11 12:24:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13192 states, 13188 states have (on average 3.3105095541401273) internal successors, (43659), 13191 states have internal predecessors, (43659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13192 states to 13192 states and 43659 transitions. [2021-03-11 12:24:22,316 INFO L78 Accepts]: Start accepts. Automaton has 13192 states and 43659 transitions. Word has length 31 [2021-03-11 12:24:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:22,316 INFO L480 AbstractCegarLoop]: Abstraction has 13192 states and 43659 transitions. [2021-03-11 12:24:22,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:22,316 INFO L276 IsEmpty]: Start isEmpty. Operand 13192 states and 43659 transitions. [2021-03-11 12:24:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:22,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:22,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:22,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 12:24:22,328 INFO L428 AbstractCegarLoop]: === Iteration 142 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:22,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1665510805, now seen corresponding path program 89 times [2021-03-11 12:24:22,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:22,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690227160] [2021-03-11 12:24:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:22,361 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:24:22,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:24:22,387 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:24:22,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:24:22,426 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:24:22,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:24:22,462 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:24:22,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:24:22,504 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:24:22,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:24:22,550 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:24:22,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:24:22,595 INFO L142 QuantifierPusher]: treesize reduction 18, result has 72.7 percent of original size [2021-03-11 12:24:22,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:24:22,645 INFO L142 QuantifierPusher]: treesize reduction 72, result has 57.9 percent of original size [2021-03-11 12:24:22,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-03-11 12:24:22,720 INFO L142 QuantifierPusher]: treesize reduction 45, result has 74.1 percent of original size [2021-03-11 12:24:22,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-03-11 12:24:22,805 INFO L142 QuantifierPusher]: treesize reduction 42, result has 77.7 percent of original size [2021-03-11 12:24:22,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-03-11 12:24:22,828 INFO L142 QuantifierPusher]: treesize reduction 77, result has 67.0 percent of original size [2021-03-11 12:24:22,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-03-11 12:24:22,978 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2021-03-11 12:24:22,980 INFO L142 QuantifierPusher]: treesize reduction 77, result has 67.0 percent of original size [2021-03-11 12:24:22,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-03-11 12:24:23,111 INFO L142 QuantifierPusher]: treesize reduction 232, result has 64.4 percent of original size [2021-03-11 12:24:23,112 INFO L147 QuantifierPusher]: treesize reduction 48, result has 88.5 percent of original size 371 [2021-03-11 12:24:23,301 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 37 [2021-03-11 12:24:23,304 INFO L142 QuantifierPusher]: treesize reduction 88, result has 65.9 percent of original size [2021-03-11 12:24:23,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-03-11 12:24:23,454 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-03-11 12:24:23,457 INFO L142 QuantifierPusher]: treesize reduction 150, result has 56.8 percent of original size [2021-03-11 12:24:23,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-03-11 12:24:23,630 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-03-11 12:24:23,631 INFO L142 QuantifierPusher]: treesize reduction 58, result has 43.7 percent of original size [2021-03-11 12:24:23,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 12:24:23,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:23,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:24:23,719 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.7 percent of original size [2021-03-11 12:24:23,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:24:23,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:23,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:23,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:23,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:23,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690227160] [2021-03-11 12:24:23,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:23,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:24:23,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599302413] [2021-03-11 12:24:23,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:24:23,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:23,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:24:23,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:24:23,776 INFO L87 Difference]: Start difference. First operand 13192 states and 43659 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:25,108 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-03-11 12:24:25,321 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-03-11 12:24:25,647 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-03-11 12:24:25,892 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-03-11 12:24:26,238 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-03-11 12:24:26,820 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-03-11 12:24:27,280 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-03-11 12:24:27,619 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2021-03-11 12:24:28,222 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-03-11 12:24:29,180 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2021-03-11 12:24:29,492 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2021-03-11 12:24:29,799 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-03-11 12:24:30,066 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-03-11 12:24:30,428 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:24:30,851 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2021-03-11 12:24:31,335 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-03-11 12:24:31,642 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-03-11 12:24:32,012 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 74 [2021-03-11 12:24:32,498 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2021-03-11 12:24:32,811 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2021-03-11 12:24:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:33,098 INFO L93 Difference]: Finished difference Result 17479 states and 56588 transitions. [2021-03-11 12:24:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-03-11 12:24:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:33,125 INFO L225 Difference]: With dead ends: 17479 [2021-03-11 12:24:33,125 INFO L226 Difference]: Without dead ends: 17479 [2021-03-11 12:24:33,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 6263.1ms TimeCoverageRelationStatistics Valid=690, Invalid=1760, Unknown=0, NotChecked=0, Total=2450 [2021-03-11 12:24:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17479 states. [2021-03-11 12:24:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17479 to 13103. [2021-03-11 12:24:33,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 13099 states have (on average 3.312313917092908) internal successors, (43388), 13102 states have internal predecessors, (43388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 43388 transitions. [2021-03-11 12:24:33,301 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 43388 transitions. Word has length 31 [2021-03-11 12:24:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:33,301 INFO L480 AbstractCegarLoop]: Abstraction has 13103 states and 43388 transitions. [2021-03-11 12:24:33,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 43388 transitions. [2021-03-11 12:24:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:33,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:33,313 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:33,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 12:24:33,313 INFO L428 AbstractCegarLoop]: === Iteration 143 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:33,313 INFO L82 PathProgramCache]: Analyzing trace with hash 45536911, now seen corresponding path program 90 times [2021-03-11 12:24:33,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:33,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079832971] [2021-03-11 12:24:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:33,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:24:33,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:24:33,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:24:33,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:33,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:33,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:33,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:24:33,608 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:24:33,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:24:33,656 INFO L142 QuantifierPusher]: treesize reduction 62, result has 46.1 percent of original size [2021-03-11 12:24:33,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:24:33,708 INFO L142 QuantifierPusher]: treesize reduction 35, result has 70.3 percent of original size [2021-03-11 12:24:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:24:33,767 INFO L142 QuantifierPusher]: treesize reduction 35, result has 69.6 percent of original size [2021-03-11 12:24:33,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-03-11 12:24:33,788 INFO L142 QuantifierPusher]: treesize reduction 79, result has 56.1 percent of original size [2021-03-11 12:24:33,789 INFO L147 QuantifierPusher]: treesize reduction 10, result has 90.1 percent of original size 91 [2021-03-11 12:24:33,872 INFO L142 QuantifierPusher]: treesize reduction 89, result has 50.6 percent of original size [2021-03-11 12:24:33,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:24:33,945 INFO L142 QuantifierPusher]: treesize reduction 82, result has 57.5 percent of original size [2021-03-11 12:24:33,946 INFO L147 QuantifierPusher]: treesize reduction 18, result has 83.8 percent of original size 93 [2021-03-11 12:24:34,031 INFO L142 QuantifierPusher]: treesize reduction 68, result has 61.8 percent of original size [2021-03-11 12:24:34,032 INFO L147 QuantifierPusher]: treesize reduction 18, result has 83.6 percent of original size 92 [2021-03-11 12:24:34,110 INFO L142 QuantifierPusher]: treesize reduction 75, result has 61.1 percent of original size [2021-03-11 12:24:34,111 INFO L147 QuantifierPusher]: treesize reduction 18, result has 84.7 percent of original size 100 [2021-03-11 12:24:34,214 INFO L142 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-03-11 12:24:34,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:24:34,261 INFO L142 QuantifierPusher]: treesize reduction 26, result has 50.9 percent of original size [2021-03-11 12:24:34,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:24:34,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:24:34,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:24:34,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:34,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:34,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079832971] [2021-03-11 12:24:34,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:34,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:24:34,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997518868] [2021-03-11 12:24:34,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:24:34,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:24:34,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:24:34,345 INFO L87 Difference]: Start difference. First operand 13103 states and 43388 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:35,181 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-03-11 12:24:35,448 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-03-11 12:24:35,873 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2021-03-11 12:24:36,233 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-03-11 12:24:36,581 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2021-03-11 12:24:37,357 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-03-11 12:24:37,577 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2021-03-11 12:24:37,923 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2021-03-11 12:24:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:38,323 INFO L93 Difference]: Finished difference Result 15775 states and 51406 transitions. [2021-03-11 12:24:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:24:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:38,347 INFO L225 Difference]: With dead ends: 15775 [2021-03-11 12:24:38,348 INFO L226 Difference]: Without dead ends: 15775 [2021-03-11 12:24:38,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2671.1ms TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:24:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15775 states. [2021-03-11 12:24:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15775 to 13115. [2021-03-11 12:24:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 13111 states have (on average 3.312180611700099) internal successors, (43426), 13114 states have internal predecessors, (43426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 43426 transitions. [2021-03-11 12:24:38,516 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 43426 transitions. Word has length 31 [2021-03-11 12:24:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:38,516 INFO L480 AbstractCegarLoop]: Abstraction has 13115 states and 43426 transitions. [2021-03-11 12:24:38,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 43426 transitions. [2021-03-11 12:24:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:38,528 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:38,528 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:38,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 12:24:38,528 INFO L428 AbstractCegarLoop]: === Iteration 144 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1410268857, now seen corresponding path program 91 times [2021-03-11 12:24:38,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:38,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190523545] [2021-03-11 12:24:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:38,558 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:24:38,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:24:38,575 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.0 percent of original size [2021-03-11 12:24:38,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-11 12:24:38,604 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-11 12:24:38,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-11 12:24:38,629 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-03-11 12:24:38,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 12:24:38,672 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size [2021-03-11 12:24:38,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:24:38,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.6 percent of original size [2021-03-11 12:24:38,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 12:24:38,775 INFO L142 QuantifierPusher]: treesize reduction 35, result has 58.3 percent of original size [2021-03-11 12:24:38,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:24:38,851 INFO L142 QuantifierPusher]: treesize reduction 42, result has 59.2 percent of original size [2021-03-11 12:24:38,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:24:38,931 INFO L142 QuantifierPusher]: treesize reduction 103, result has 51.6 percent of original size [2021-03-11 12:24:38,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:24:39,049 INFO L142 QuantifierPusher]: treesize reduction 103, result has 51.6 percent of original size [2021-03-11 12:24:39,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-03-11 12:24:39,179 INFO L142 QuantifierPusher]: treesize reduction 90, result has 60.2 percent of original size [2021-03-11 12:24:39,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-03-11 12:24:39,385 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2021-03-11 12:24:39,387 INFO L142 QuantifierPusher]: treesize reduction 85, result has 60.1 percent of original size [2021-03-11 12:24:39,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-03-11 12:24:39,524 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2021-03-11 12:24:39,525 INFO L142 QuantifierPusher]: treesize reduction 15, result has 70.6 percent of original size [2021-03-11 12:24:39,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:24:39,570 INFO L142 QuantifierPusher]: treesize reduction 15, result has 78.3 percent of original size [2021-03-11 12:24:39,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:24:39,648 INFO L142 QuantifierPusher]: treesize reduction 32, result has 74.0 percent of original size [2021-03-11 12:24:39,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:24:39,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:39,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 12:24:39,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:39,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-11 12:24:39,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-03-11 12:24:39,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 12:24:39,928 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:24:39,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:24:39,962 INFO L142 QuantifierPusher]: treesize reduction 14, result has 17.6 percent of original size [2021-03-11 12:24:39,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 12:24:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:39,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190523545] [2021-03-11 12:24:39,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:39,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-03-11 12:24:39,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293688644] [2021-03-11 12:24:39,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-11 12:24:39,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-11 12:24:39,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-03-11 12:24:39,997 INFO L87 Difference]: Start difference. First operand 13115 states and 43426 transitions. Second operand has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:40,849 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-03-11 12:24:41,204 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-03-11 12:24:42,045 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-03-11 12:24:42,535 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2021-03-11 12:24:43,052 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2021-03-11 12:24:43,302 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2021-03-11 12:24:44,731 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-03-11 12:24:45,249 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-03-11 12:24:47,072 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-03-11 12:24:47,799 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-11 12:24:49,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:24:49,952 INFO L93 Difference]: Finished difference Result 17330 states and 56735 transitions. [2021-03-11 12:24:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:24:49,954 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:24:49,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:24:49,979 INFO L225 Difference]: With dead ends: 17330 [2021-03-11 12:24:49,979 INFO L226 Difference]: Without dead ends: 17330 [2021-03-11 12:24:49,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4399.3ms TimeCoverageRelationStatistics Valid=322, Invalid=1748, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:24:49,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17330 states. [2021-03-11 12:24:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17330 to 13225. [2021-03-11 12:24:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13225 states, 13221 states have (on average 3.3123061795628166) internal successors, (43792), 13224 states have internal predecessors, (43792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13225 states to 13225 states and 43792 transitions. [2021-03-11 12:24:50,169 INFO L78 Accepts]: Start accepts. Automaton has 13225 states and 43792 transitions. Word has length 31 [2021-03-11 12:24:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:24:50,169 INFO L480 AbstractCegarLoop]: Abstraction has 13225 states and 43792 transitions. [2021-03-11 12:24:50,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 13225 states and 43792 transitions. [2021-03-11 12:24:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:24:50,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:24:50,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:24:50,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-11 12:24:50,181 INFO L428 AbstractCegarLoop]: === Iteration 145 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:24:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:24:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1931384459, now seen corresponding path program 92 times [2021-03-11 12:24:50,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:24:50,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098046627] [2021-03-11 12:24:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:24:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:24:50,217 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.3 percent of original size [2021-03-11 12:24:50,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:24:50,248 INFO L142 QuantifierPusher]: treesize reduction 3, result has 95.9 percent of original size [2021-03-11 12:24:50,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:24:50,292 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.7 percent of original size [2021-03-11 12:24:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-11 12:24:50,331 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.6 percent of original size [2021-03-11 12:24:50,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-11 12:24:50,377 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.0 percent of original size [2021-03-11 12:24:50,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:24:50,432 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.3 percent of original size [2021-03-11 12:24:50,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-03-11 12:24:50,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 76.0 percent of original size [2021-03-11 12:24:50,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-11 12:24:50,570 INFO L142 QuantifierPusher]: treesize reduction 66, result has 62.1 percent of original size [2021-03-11 12:24:50,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-03-11 12:24:50,663 INFO L142 QuantifierPusher]: treesize reduction 39, result has 78.0 percent of original size [2021-03-11 12:24:50,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-03-11 12:24:50,788 INFO L142 QuantifierPusher]: treesize reduction 45, result has 77.5 percent of original size [2021-03-11 12:24:50,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-03-11 12:24:50,816 INFO L142 QuantifierPusher]: treesize reduction 96, result has 62.8 percent of original size [2021-03-11 12:24:50,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-03-11 12:24:50,981 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2021-03-11 12:24:50,989 INFO L142 QuantifierPusher]: treesize reduction 96, result has 62.8 percent of original size [2021-03-11 12:24:50,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-03-11 12:24:51,160 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2021-03-11 12:24:51,165 INFO L142 QuantifierPusher]: treesize reduction 257, result has 62.3 percent of original size [2021-03-11 12:24:51,167 INFO L147 QuantifierPusher]: treesize reduction 48, result has 88.7 percent of original size 377 [2021-03-11 12:24:51,418 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 38 [2021-03-11 12:24:51,420 INFO L142 QuantifierPusher]: treesize reduction 102, result has 63.6 percent of original size [2021-03-11 12:24:51,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-03-11 12:24:51,623 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-03-11 12:24:51,625 INFO L142 QuantifierPusher]: treesize reduction 22, result has 77.1 percent of original size [2021-03-11 12:24:51,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 12:24:51,722 INFO L142 QuantifierPusher]: treesize reduction 57, result has 55.8 percent of original size [2021-03-11 12:24:51,723 INFO L147 QuantifierPusher]: treesize reduction 7, result has 90.3 percent of original size 65 [2021-03-11 12:24:51,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:51,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:24:51,864 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:24:51,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:24:51,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:51,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:51,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:24:51,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:24:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:24:51,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098046627] [2021-03-11 12:24:51,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:24:51,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:24:51,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085053996] [2021-03-11 12:24:51,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:24:51,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:24:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:24:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:24:51,918 INFO L87 Difference]: Start difference. First operand 13225 states and 43792 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:24:52,755 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-03-11 12:24:53,037 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-03-11 12:24:53,262 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-03-11 12:24:53,605 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-03-11 12:24:53,897 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2021-03-11 12:24:54,321 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-03-11 12:24:54,677 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-03-11 12:24:54,941 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-03-11 12:24:55,401 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2021-03-11 12:24:55,800 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-03-11 12:24:56,565 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-03-11 12:24:57,165 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-03-11 12:24:57,626 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-03-11 12:24:57,937 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-03-11 12:24:58,770 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2021-03-11 12:24:59,105 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-03-11 12:25:00,303 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-03-11 12:25:00,639 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-03-11 12:25:01,289 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2021-03-11 12:25:01,973 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-03-11 12:25:02,645 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2021-03-11 12:25:03,199 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2021-03-11 12:25:03,630 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2021-03-11 12:25:04,105 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-03-11 12:25:04,918 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 75 [2021-03-11 12:25:05,462 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2021-03-11 12:25:05,853 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-03-11 12:25:06,380 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-03-11 12:25:06,814 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-03-11 12:25:07,700 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-03-11 12:25:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:25:08,413 INFO L93 Difference]: Finished difference Result 18162 states and 58711 transitions. [2021-03-11 12:25:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 12:25:08,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:25:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:25:08,441 INFO L225 Difference]: With dead ends: 18162 [2021-03-11 12:25:08,441 INFO L226 Difference]: Without dead ends: 18162 [2021-03-11 12:25:08,442 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 10567.6ms TimeCoverageRelationStatistics Valid=900, Invalid=2180, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 12:25:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18162 states. [2021-03-11 12:25:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18162 to 13332. [2021-03-11 12:25:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13332 states, 13328 states have (on average 3.3111494597839135) internal successors, (44131), 13331 states have internal predecessors, (44131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13332 states to 13332 states and 44131 transitions. [2021-03-11 12:25:08,628 INFO L78 Accepts]: Start accepts. Automaton has 13332 states and 44131 transitions. Word has length 31 [2021-03-11 12:25:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:25:08,628 INFO L480 AbstractCegarLoop]: Abstraction has 13332 states and 44131 transitions. [2021-03-11 12:25:08,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13332 states and 44131 transitions. [2021-03-11 12:25:08,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:25:08,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:25:08,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:25:08,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-11 12:25:08,641 INFO L428 AbstractCegarLoop]: === Iteration 146 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:25:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:25:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 578839575, now seen corresponding path program 93 times [2021-03-11 12:25:08,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:25:08,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733509345] [2021-03-11 12:25:08,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:25:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:25:08,665 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:25:08,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:25:08,688 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:25:08,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:25:08,714 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:25:08,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:25:08,736 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:25:08,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:08,783 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:25:08,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:08,832 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:25:08,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:08,881 INFO L142 QuantifierPusher]: treesize reduction 21, result has 63.8 percent of original size [2021-03-11 12:25:08,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:08,933 INFO L142 QuantifierPusher]: treesize reduction 31, result has 71.0 percent of original size [2021-03-11 12:25:08,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-03-11 12:25:09,018 INFO L142 QuantifierPusher]: treesize reduction 31, result has 78.3 percent of original size [2021-03-11 12:25:09,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-03-11 12:25:09,115 INFO L142 QuantifierPusher]: treesize reduction 58, result has 59.7 percent of original size [2021-03-11 12:25:09,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-11 12:25:09,144 INFO L142 QuantifierPusher]: treesize reduction 58, result has 66.9 percent of original size [2021-03-11 12:25:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-03-11 12:25:09,299 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2021-03-11 12:25:09,301 INFO L142 QuantifierPusher]: treesize reduction 44, result has 74.3 percent of original size [2021-03-11 12:25:09,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:25:09,453 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2021-03-11 12:25:09,455 INFO L142 QuantifierPusher]: treesize reduction 40, result has 77.3 percent of original size [2021-03-11 12:25:09,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-03-11 12:25:09,506 INFO L142 QuantifierPusher]: treesize reduction 67, result has 67.5 percent of original size [2021-03-11 12:25:09,507 INFO L147 QuantifierPusher]: treesize reduction 10, result has 92.8 percent of original size 129 [2021-03-11 12:25:09,678 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2021-03-11 12:25:09,679 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:25:09,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:25:09,723 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.0 percent of original size [2021-03-11 12:25:09,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:25:09,769 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:25:09,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:25:09,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:25:09,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:25:09,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:09,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:25:09,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733509345] [2021-03-11 12:25:09,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:25:09,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:25:09,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718481999] [2021-03-11 12:25:09,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:25:09,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:25:09,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:25:09,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:25:09,861 INFO L87 Difference]: Start difference. First operand 13332 states and 44131 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:10,256 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-03-11 12:25:10,475 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-03-11 12:25:10,747 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-03-11 12:25:11,032 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:25:11,365 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-03-11 12:25:11,753 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2021-03-11 12:25:12,091 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2021-03-11 12:25:12,307 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-03-11 12:25:12,517 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2021-03-11 12:25:12,957 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2021-03-11 12:25:13,146 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-03-11 12:25:13,426 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-03-11 12:25:13,897 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-03-11 12:25:14,437 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-03-11 12:25:14,859 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2021-03-11 12:25:15,998 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2021-03-11 12:25:16,301 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:25:16,553 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-03-11 12:25:16,894 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-03-11 12:25:17,423 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 82 [2021-03-11 12:25:17,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:25:17,880 INFO L93 Difference]: Finished difference Result 16216 states and 52785 transitions. [2021-03-11 12:25:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-11 12:25:17,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:25:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:25:17,908 INFO L225 Difference]: With dead ends: 16216 [2021-03-11 12:25:17,908 INFO L226 Difference]: Without dead ends: 16216 [2021-03-11 12:25:17,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 5257.3ms TimeCoverageRelationStatistics Valid=447, Invalid=1035, Unknown=0, NotChecked=0, Total=1482 [2021-03-11 12:25:17,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16216 states. [2021-03-11 12:25:18,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16216 to 13393. [2021-03-11 12:25:18,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13393 states, 13389 states have (on average 3.309731869445067) internal successors, (44314), 13392 states have internal predecessors, (44314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13393 states to 13393 states and 44314 transitions. [2021-03-11 12:25:18,148 INFO L78 Accepts]: Start accepts. Automaton has 13393 states and 44314 transitions. Word has length 31 [2021-03-11 12:25:18,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:25:18,148 INFO L480 AbstractCegarLoop]: Abstraction has 13393 states and 44314 transitions. [2021-03-11 12:25:18,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13393 states and 44314 transitions. [2021-03-11 12:25:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:25:18,161 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:25:18,161 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:25:18,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-11 12:25:18,161 INFO L428 AbstractCegarLoop]: === Iteration 147 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:25:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:25:18,161 INFO L82 PathProgramCache]: Analyzing trace with hash 590732495, now seen corresponding path program 94 times [2021-03-11 12:25:18,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:25:18,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115816793] [2021-03-11 12:25:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:25:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:25:18,185 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:25:18,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:25:18,202 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:25:18,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:25:18,226 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:25:18,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:25:18,250 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:18,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:18,277 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:18,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:18,307 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:18,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:18,337 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.2 percent of original size [2021-03-11 12:25:18,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:25:18,390 INFO L142 QuantifierPusher]: treesize reduction 55, result has 56.0 percent of original size [2021-03-11 12:25:18,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-03-11 12:25:18,465 INFO L142 QuantifierPusher]: treesize reduction 61, result has 56.4 percent of original size [2021-03-11 12:25:18,466 INFO L147 QuantifierPusher]: treesize reduction 6, result has 92.4 percent of original size 73 [2021-03-11 12:25:18,560 INFO L142 QuantifierPusher]: treesize reduction 57, result has 59.0 percent of original size [2021-03-11 12:25:18,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:25:18,582 INFO L142 QuantifierPusher]: treesize reduction 76, result has 55.3 percent of original size [2021-03-11 12:25:18,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-03-11 12:25:18,696 INFO L142 QuantifierPusher]: treesize reduction 70, result has 58.1 percent of original size [2021-03-11 12:25:18,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-03-11 12:25:18,831 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-03-11 12:25:18,833 INFO L142 QuantifierPusher]: treesize reduction 55, result has 67.5 percent of original size [2021-03-11 12:25:18,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:25:18,869 INFO L142 QuantifierPusher]: treesize reduction 77, result has 59.5 percent of original size [2021-03-11 12:25:18,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:25:19,007 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-11 12:25:19,009 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-03-11 12:25:19,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:19,058 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-03-11 12:25:19,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:19,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:19,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:25:19,161 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:25:19,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:25:19,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:19,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:19,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:19,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:25:19,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115816793] [2021-03-11 12:25:19,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:25:19,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:25:19,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512425330] [2021-03-11 12:25:19,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:25:19,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:25:19,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:25:19,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:25:19,220 INFO L87 Difference]: Start difference. First operand 13393 states and 44314 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:19,698 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-03-11 12:25:20,420 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-11 12:25:20,627 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-03-11 12:25:20,968 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2021-03-11 12:25:21,241 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2021-03-11 12:25:21,667 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2021-03-11 12:25:21,998 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2021-03-11 12:25:22,457 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-11 12:25:22,811 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-03-11 12:25:23,293 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-03-11 12:25:23,602 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2021-03-11 12:25:23,845 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-11 12:25:24,055 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-03-11 12:25:24,599 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2021-03-11 12:25:24,873 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-03-11 12:25:25,239 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-03-11 12:25:25,457 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2021-03-11 12:25:25,750 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2021-03-11 12:25:26,345 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2021-03-11 12:25:26,799 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2021-03-11 12:25:27,616 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-03-11 12:25:28,261 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2021-03-11 12:25:28,514 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-03-11 12:25:28,798 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2021-03-11 12:25:29,375 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-03-11 12:25:29,897 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-03-11 12:25:30,448 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2021-03-11 12:25:30,995 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2021-03-11 12:25:31,485 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2021-03-11 12:25:31,778 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2021-03-11 12:25:32,107 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-03-11 12:25:32,390 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2021-03-11 12:25:32,752 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-03-11 12:25:33,017 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-03-11 12:25:33,379 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-03-11 12:25:33,829 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 76 [2021-03-11 12:25:34,397 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-03-11 12:25:34,804 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 84 [2021-03-11 12:25:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:25:35,252 INFO L93 Difference]: Finished difference Result 18512 states and 59805 transitions. [2021-03-11 12:25:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-03-11 12:25:35,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:25:35,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:25:35,278 INFO L225 Difference]: With dead ends: 18512 [2021-03-11 12:25:35,278 INFO L226 Difference]: Without dead ends: 18512 [2021-03-11 12:25:35,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 9938.9ms TimeCoverageRelationStatistics Valid=1155, Invalid=2751, Unknown=0, NotChecked=0, Total=3906 [2021-03-11 12:25:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18512 states. [2021-03-11 12:25:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18512 to 13619. [2021-03-11 12:25:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13619 states, 13615 states have (on average 3.304590525156078) internal successors, (44992), 13618 states have internal predecessors, (44992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13619 states to 13619 states and 44992 transitions. [2021-03-11 12:25:35,460 INFO L78 Accepts]: Start accepts. Automaton has 13619 states and 44992 transitions. Word has length 31 [2021-03-11 12:25:35,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:25:35,460 INFO L480 AbstractCegarLoop]: Abstraction has 13619 states and 44992 transitions. [2021-03-11 12:25:35,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:35,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13619 states and 44992 transitions. [2021-03-11 12:25:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:25:35,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:25:35,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:25:35,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-11 12:25:35,472 INFO L428 AbstractCegarLoop]: === Iteration 148 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:25:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:25:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash -989265189, now seen corresponding path program 95 times [2021-03-11 12:25:35,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:25:35,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103922470] [2021-03-11 12:25:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:25:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:25:35,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:25:35,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:25:35,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:25:35,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:35,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:35,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:35,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:35,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 67.3 percent of original size [2021-03-11 12:25:35,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:25:35,797 INFO L142 QuantifierPusher]: treesize reduction 39, result has 63.2 percent of original size [2021-03-11 12:25:35,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-03-11 12:25:35,875 INFO L142 QuantifierPusher]: treesize reduction 44, result has 72.0 percent of original size [2021-03-11 12:25:35,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-03-11 12:25:36,001 INFO L142 QuantifierPusher]: treesize reduction 39, result has 70.9 percent of original size [2021-03-11 12:25:36,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-03-11 12:25:36,101 INFO L142 QuantifierPusher]: treesize reduction 53, result has 67.7 percent of original size [2021-03-11 12:25:36,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:25:36,231 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2021-03-11 12:25:36,233 INFO L142 QuantifierPusher]: treesize reduction 48, result has 71.1 percent of original size [2021-03-11 12:25:36,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-03-11 12:25:36,371 INFO L142 QuantifierPusher]: treesize reduction 48, result has 70.6 percent of original size [2021-03-11 12:25:36,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-03-11 12:25:36,409 INFO L142 QuantifierPusher]: treesize reduction 68, result has 63.6 percent of original size [2021-03-11 12:25:36,410 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.1 percent of original size 112 [2021-03-11 12:25:36,555 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2021-03-11 12:25:36,557 INFO L142 QuantifierPusher]: treesize reduction 68, result has 63.6 percent of original size [2021-03-11 12:25:36,558 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.1 percent of original size 112 [2021-03-11 12:25:36,711 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2021-03-11 12:25:36,713 INFO L142 QuantifierPusher]: treesize reduction 66, result has 67.3 percent of original size [2021-03-11 12:25:36,714 INFO L147 QuantifierPusher]: treesize reduction 7, result has 94.9 percent of original size 129 [2021-03-11 12:25:36,872 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2021-03-11 12:25:36,884 INFO L142 QuantifierPusher]: treesize reduction 47, result has 47.8 percent of original size [2021-03-11 12:25:36,885 INFO L147 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size 36 [2021-03-11 12:25:36,978 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:25:36,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:25:37,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:37,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:25:37,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103922470] [2021-03-11 12:25:37,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:25:37,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:25:37,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138372186] [2021-03-11 12:25:37,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:25:37,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:25:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:25:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:25:37,023 INFO L87 Difference]: Start difference. First operand 13619 states and 44992 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:37,630 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-03-11 12:25:37,891 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2021-03-11 12:25:38,191 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-03-11 12:25:38,525 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-03-11 12:25:39,102 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-03-11 12:25:39,528 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-03-11 12:25:40,155 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-03-11 12:25:40,562 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-03-11 12:25:41,465 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2021-03-11 12:25:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:25:41,964 INFO L93 Difference]: Finished difference Result 16122 states and 52501 transitions. [2021-03-11 12:25:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 12:25:41,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:25:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:25:41,988 INFO L225 Difference]: With dead ends: 16122 [2021-03-11 12:25:41,988 INFO L226 Difference]: Without dead ends: 16122 [2021-03-11 12:25:41,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3277.8ms TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2021-03-11 12:25:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16122 states. [2021-03-11 12:25:42,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16122 to 13625. [2021-03-11 12:25:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13625 states, 13621 states have (on average 3.304456354159019) internal successors, (45010), 13624 states have internal predecessors, (45010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13625 states to 13625 states and 45010 transitions. [2021-03-11 12:25:42,161 INFO L78 Accepts]: Start accepts. Automaton has 13625 states and 45010 transitions. Word has length 31 [2021-03-11 12:25:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:25:42,161 INFO L480 AbstractCegarLoop]: Abstraction has 13625 states and 45010 transitions. [2021-03-11 12:25:42,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 13625 states and 45010 transitions. [2021-03-11 12:25:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:25:42,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:25:42,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:25:42,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-11 12:25:42,173 INFO L428 AbstractCegarLoop]: === Iteration 149 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:25:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:25:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1110841249, now seen corresponding path program 96 times [2021-03-11 12:25:42,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:25:42,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300786951] [2021-03-11 12:25:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:25:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:25:42,201 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:25:42,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:25:42,220 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:25:42,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:25:42,245 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:25:42,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:25:42,268 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:42,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:42,295 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:42,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:42,326 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:42,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:42,358 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.2 percent of original size [2021-03-11 12:25:42,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:25:42,413 INFO L142 QuantifierPusher]: treesize reduction 63, result has 49.2 percent of original size [2021-03-11 12:25:42,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:25:42,484 INFO L142 QuantifierPusher]: treesize reduction 69, result has 50.4 percent of original size [2021-03-11 12:25:42,484 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.4 percent of original size 64 [2021-03-11 12:25:42,571 INFO L142 QuantifierPusher]: treesize reduction 66, result has 52.2 percent of original size [2021-03-11 12:25:42,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:25:42,593 INFO L142 QuantifierPusher]: treesize reduction 85, result has 49.4 percent of original size [2021-03-11 12:25:42,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:25:42,701 INFO L142 QuantifierPusher]: treesize reduction 79, result has 52.1 percent of original size [2021-03-11 12:25:42,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-11 12:25:42,824 INFO L142 QuantifierPusher]: treesize reduction 64, result has 61.7 percent of original size [2021-03-11 12:25:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:25:42,857 INFO L142 QuantifierPusher]: treesize reduction 86, result has 54.5 percent of original size [2021-03-11 12:25:42,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:25:42,993 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-03-11 12:25:42,996 INFO L142 QuantifierPusher]: treesize reduction 82, result has 56.6 percent of original size [2021-03-11 12:25:42,997 INFO L147 QuantifierPusher]: treesize reduction 4, result has 96.3 percent of original size 103 [2021-03-11 12:25:43,131 INFO L142 QuantifierPusher]: treesize reduction 38, result has 58.7 percent of original size [2021-03-11 12:25:43,132 INFO L147 QuantifierPusher]: treesize reduction 5, result has 90.7 percent of original size 49 [2021-03-11 12:25:43,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:43,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:25:43,269 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:25:43,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:25:43,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:43,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:43,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:43,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:25:43,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300786951] [2021-03-11 12:25:43,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:25:43,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:25:43,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370095895] [2021-03-11 12:25:43,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:25:43,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:25:43,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:25:43,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:25:43,323 INFO L87 Difference]: Start difference. First operand 13625 states and 45010 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:44,531 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-03-11 12:25:44,834 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-03-11 12:25:45,078 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:25:45,484 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-03-11 12:25:45,771 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-11 12:25:46,181 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-11 12:25:46,942 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-03-11 12:25:47,497 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2021-03-11 12:25:47,868 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-03-11 12:25:48,389 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2021-03-11 12:25:49,026 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2021-03-11 12:25:49,261 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-03-11 12:25:49,608 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2021-03-11 12:25:49,845 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-03-11 12:25:50,182 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2021-03-11 12:25:50,617 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-03-11 12:25:50,928 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-03-11 12:25:51,268 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-03-11 12:25:51,781 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2021-03-11 12:25:52,258 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:25:52,906 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-03-11 12:25:53,327 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-03-11 12:25:53,835 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2021-03-11 12:25:54,194 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-03-11 12:25:54,578 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2021-03-11 12:25:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:25:54,868 INFO L93 Difference]: Finished difference Result 17872 states and 57801 transitions. [2021-03-11 12:25:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-03-11 12:25:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:25:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:25:54,894 INFO L225 Difference]: With dead ends: 17872 [2021-03-11 12:25:54,894 INFO L226 Difference]: Without dead ends: 17872 [2021-03-11 12:25:54,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 7065.7ms TimeCoverageRelationStatistics Valid=712, Invalid=1838, Unknown=0, NotChecked=0, Total=2550 [2021-03-11 12:25:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17872 states. [2021-03-11 12:25:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17872 to 13609. [2021-03-11 12:25:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13609 states, 13605 states have (on average 3.30481440646821) internal successors, (44962), 13608 states have internal predecessors, (44962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13609 states to 13609 states and 44962 transitions. [2021-03-11 12:25:55,076 INFO L78 Accepts]: Start accepts. Automaton has 13609 states and 44962 transitions. Word has length 31 [2021-03-11 12:25:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:25:55,076 INFO L480 AbstractCegarLoop]: Abstraction has 13609 states and 44962 transitions. [2021-03-11 12:25:55,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13609 states and 44962 transitions. [2021-03-11 12:25:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:25:55,088 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:25:55,088 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:25:55,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-11 12:25:55,089 INFO L428 AbstractCegarLoop]: === Iteration 150 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:25:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:25:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash 337838043, now seen corresponding path program 97 times [2021-03-11 12:25:55,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:25:55,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746428454] [2021-03-11 12:25:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:25:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:25:55,111 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:25:55,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:25:55,129 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:25:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:25:55,154 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:25:55,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:25:55,178 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:55,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:55,210 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:55,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:55,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:25:55,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:25:55,272 INFO L142 QuantifierPusher]: treesize reduction 12, result has 78.2 percent of original size [2021-03-11 12:25:55,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 12:25:55,327 INFO L142 QuantifierPusher]: treesize reduction 63, result has 49.2 percent of original size [2021-03-11 12:25:55,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-03-11 12:25:55,396 INFO L142 QuantifierPusher]: treesize reduction 69, result has 50.4 percent of original size [2021-03-11 12:25:55,397 INFO L147 QuantifierPusher]: treesize reduction 6, result has 91.4 percent of original size 64 [2021-03-11 12:25:55,486 INFO L142 QuantifierPusher]: treesize reduction 66, result has 52.2 percent of original size [2021-03-11 12:25:55,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 72 [2021-03-11 12:25:55,509 INFO L142 QuantifierPusher]: treesize reduction 85, result has 49.4 percent of original size [2021-03-11 12:25:55,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:25:55,619 INFO L142 QuantifierPusher]: treesize reduction 79, result has 52.1 percent of original size [2021-03-11 12:25:55,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-03-11 12:25:55,742 INFO L142 QuantifierPusher]: treesize reduction 64, result has 61.7 percent of original size [2021-03-11 12:25:55,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:25:55,833 INFO L142 QuantifierPusher]: treesize reduction 86, result has 54.5 percent of original size [2021-03-11 12:25:55,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-03-11 12:25:55,964 INFO L142 QuantifierPusher]: treesize reduction 43, result has 53.3 percent of original size [2021-03-11 12:25:55,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 12:25:56,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:56,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:25:56,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:56,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:25:56,111 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:25:56,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:25:56,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:56,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:56,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:25:56,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:25:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:25:56,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746428454] [2021-03-11 12:25:56,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:25:56,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:25:56,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764230495] [2021-03-11 12:25:56,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:25:56,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:25:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:25:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:25:56,166 INFO L87 Difference]: Start difference. First operand 13609 states and 44962 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:25:57,378 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-03-11 12:25:57,707 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-03-11 12:25:57,942 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2021-03-11 12:25:58,319 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-03-11 12:25:58,585 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-03-11 12:25:58,999 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-03-11 12:25:59,693 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-03-11 12:25:59,903 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-03-11 12:26:00,425 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2021-03-11 12:26:00,674 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2021-03-11 12:26:00,982 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-03-11 12:26:01,215 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-03-11 12:26:01,701 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2021-03-11 12:26:01,964 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2021-03-11 12:26:02,807 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-03-11 12:26:03,074 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2021-03-11 12:26:03,665 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2021-03-11 12:26:03,966 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-03-11 12:26:04,199 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-03-11 12:26:04,804 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-03-11 12:26:05,247 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-03-11 12:26:05,792 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2021-03-11 12:26:06,243 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:26:06,835 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-03-11 12:26:07,118 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-03-11 12:26:07,503 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-03-11 12:26:07,832 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 81 [2021-03-11 12:26:08,348 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 88 [2021-03-11 12:26:08,667 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 92 [2021-03-11 12:26:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:26:09,043 INFO L93 Difference]: Finished difference Result 18762 states and 60533 transitions. [2021-03-11 12:26:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 12:26:09,046 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:26:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:26:09,071 INFO L225 Difference]: With dead ends: 18762 [2021-03-11 12:26:09,071 INFO L226 Difference]: Without dead ends: 18762 [2021-03-11 12:26:09,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 7946.1ms TimeCoverageRelationStatistics Valid=892, Invalid=2188, Unknown=0, NotChecked=0, Total=3080 [2021-03-11 12:26:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18762 states. [2021-03-11 12:26:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18762 to 13793. [2021-03-11 12:26:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13793 states, 13789 states have (on average 3.3037928783813184) internal successors, (45556), 13792 states have internal predecessors, (45556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 45556 transitions. [2021-03-11 12:26:09,256 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 45556 transitions. Word has length 31 [2021-03-11 12:26:09,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:26:09,256 INFO L480 AbstractCegarLoop]: Abstraction has 13793 states and 45556 transitions. [2021-03-11 12:26:09,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 45556 transitions. [2021-03-11 12:26:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:26:09,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:26:09,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:26:09,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-11 12:26:09,269 INFO L428 AbstractCegarLoop]: === Iteration 151 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:26:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:26:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1220261287, now seen corresponding path program 98 times [2021-03-11 12:26:09,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:26:09,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007548785] [2021-03-11 12:26:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:26:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:26:09,296 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:26:09,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:26:09,315 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:26:09,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:26:09,341 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:26:09,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:26:09,365 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:26:09,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:09,412 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:26:09,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:09,462 INFO L142 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-03-11 12:26:09,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:09,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:26:09,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:26:09,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:26:09,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:26:09,635 INFO L142 QuantifierPusher]: treesize reduction 27, result has 60.3 percent of original size [2021-03-11 12:26:09,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:26:09,637 INFO L142 QuantifierPusher]: treesize reduction 49, result has 49.0 percent of original size [2021-03-11 12:26:09,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:26:09,701 INFO L142 QuantifierPusher]: treesize reduction 49, result has 49.0 percent of original size [2021-03-11 12:26:09,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:26:09,769 INFO L142 QuantifierPusher]: treesize reduction 85, result has 56.6 percent of original size [2021-03-11 12:26:09,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-03-11 12:26:09,901 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-03-11 12:26:09,904 INFO L142 QuantifierPusher]: treesize reduction 89, result has 58.2 percent of original size [2021-03-11 12:26:09,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-03-11 12:26:10,049 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-03-11 12:26:10,051 INFO L142 QuantifierPusher]: treesize reduction 80, result has 61.4 percent of original size [2021-03-11 12:26:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-03-11 12:26:10,086 INFO L142 QuantifierPusher]: treesize reduction 93, result has 60.4 percent of original size [2021-03-11 12:26:10,087 INFO L147 QuantifierPusher]: treesize reduction 21, result has 85.2 percent of original size 121 [2021-03-11 12:26:10,247 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2021-03-11 12:26:10,249 INFO L142 QuantifierPusher]: treesize reduction 31, result has 48.3 percent of original size [2021-03-11 12:26:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 12:26:10,295 INFO L142 QuantifierPusher]: treesize reduction 39, result has 40.9 percent of original size [2021-03-11 12:26:10,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:26:10,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:26:10,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:26:10,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:10,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:26:10,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007548785] [2021-03-11 12:26:10,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:26:10,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:26:10,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565960438] [2021-03-11 12:26:10,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:26:10,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:26:10,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:26:10,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:26:10,389 INFO L87 Difference]: Start difference. First operand 13793 states and 45556 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:11,142 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-03-11 12:26:11,404 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-03-11 12:26:11,856 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2021-03-11 12:26:12,181 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-03-11 12:26:12,617 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-03-11 12:26:13,058 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-03-11 12:26:13,673 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-03-11 12:26:14,363 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2021-03-11 12:26:14,623 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-03-11 12:26:14,934 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2021-03-11 12:26:15,472 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2021-03-11 12:26:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:26:15,841 INFO L93 Difference]: Finished difference Result 15382 states and 50325 transitions. [2021-03-11 12:26:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-11 12:26:15,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:26:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:26:15,867 INFO L225 Difference]: With dead ends: 15382 [2021-03-11 12:26:15,867 INFO L226 Difference]: Without dead ends: 15382 [2021-03-11 12:26:15,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3507.6ms TimeCoverageRelationStatistics Valid=280, Invalid=712, Unknown=0, NotChecked=0, Total=992 [2021-03-11 12:26:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15382 states. [2021-03-11 12:26:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15382 to 13868. [2021-03-11 12:26:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13868 states, 13864 states have (on average 3.302149451817657) internal successors, (45781), 13867 states have internal predecessors, (45781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13868 states to 13868 states and 45781 transitions. [2021-03-11 12:26:16,041 INFO L78 Accepts]: Start accepts. Automaton has 13868 states and 45781 transitions. Word has length 31 [2021-03-11 12:26:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:26:16,041 INFO L480 AbstractCegarLoop]: Abstraction has 13868 states and 45781 transitions. [2021-03-11 12:26:16,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 13868 states and 45781 transitions. [2021-03-11 12:26:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:26:16,054 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:26:16,054 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:26:16,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-11 12:26:16,054 INFO L428 AbstractCegarLoop]: === Iteration 152 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:26:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:26:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1232154207, now seen corresponding path program 99 times [2021-03-11 12:26:16,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:26:16,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797999524] [2021-03-11 12:26:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:26:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:26:16,081 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:26:16,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:26:16,099 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.5 percent of original size [2021-03-11 12:26:16,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:26:16,124 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-03-11 12:26:16,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:26:16,148 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:26:16,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:26:16,179 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:26:16,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:26:16,212 INFO L142 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-03-11 12:26:16,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:26:16,244 INFO L142 QuantifierPusher]: treesize reduction 18, result has 65.4 percent of original size [2021-03-11 12:26:16,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-11 12:26:16,281 INFO L142 QuantifierPusher]: treesize reduction 33, result has 64.5 percent of original size [2021-03-11 12:26:16,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:26:16,356 INFO L142 QuantifierPusher]: treesize reduction 27, result has 70.0 percent of original size [2021-03-11 12:26:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-03-11 12:26:16,375 INFO L142 QuantifierPusher]: treesize reduction 34, result has 68.8 percent of original size [2021-03-11 12:26:16,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-11 12:26:16,477 INFO L142 QuantifierPusher]: treesize reduction 34, result has 68.8 percent of original size [2021-03-11 12:26:16,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-03-11 12:26:16,614 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-03-11 12:26:16,616 INFO L142 QuantifierPusher]: treesize reduction 117, result has 49.4 percent of original size [2021-03-11 12:26:16,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-03-11 12:26:16,753 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-03-11 12:26:16,756 INFO L142 QuantifierPusher]: treesize reduction 59, result has 74.5 percent of original size [2021-03-11 12:26:16,757 INFO L147 QuantifierPusher]: treesize reduction 33, result has 80.8 percent of original size 139 [2021-03-11 12:26:16,924 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2021-03-11 12:26:16,927 INFO L142 QuantifierPusher]: treesize reduction 55, result has 71.8 percent of original size [2021-03-11 12:26:16,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-03-11 12:26:16,967 INFO L142 QuantifierPusher]: treesize reduction 78, result has 63.9 percent of original size [2021-03-11 12:26:16,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-03-11 12:26:17,130 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-03-11 12:26:17,131 INFO L142 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-03-11 12:26:17,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:17,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:17,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:26:17,221 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:26:17,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:26:17,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:17,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:17,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:17,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:26:17,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797999524] [2021-03-11 12:26:17,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:26:17,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 12:26:17,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649786635] [2021-03-11 12:26:17,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 12:26:17,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:26:17,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 12:26:17,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-03-11 12:26:17,274 INFO L87 Difference]: Start difference. First operand 13868 states and 45781 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:18,367 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-11 12:26:18,595 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-03-11 12:26:18,902 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2021-03-11 12:26:19,139 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2021-03-11 12:26:19,497 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-03-11 12:26:20,112 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-03-11 12:26:20,507 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-03-11 12:26:20,827 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-03-11 12:26:21,612 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2021-03-11 12:26:22,326 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-03-11 12:26:22,874 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2021-03-11 12:26:23,167 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2021-03-11 12:26:23,481 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2021-03-11 12:26:23,842 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-03-11 12:26:24,274 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2021-03-11 12:26:24,653 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-03-11 12:26:25,226 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-03-11 12:26:25,534 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-03-11 12:26:25,990 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-03-11 12:26:26,408 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-03-11 12:26:26,934 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 79 [2021-03-11 12:26:27,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:26:27,334 INFO L93 Difference]: Finished difference Result 16870 states and 54859 transitions. [2021-03-11 12:26:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-03-11 12:26:27,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:26:27,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:26:27,358 INFO L225 Difference]: With dead ends: 16870 [2021-03-11 12:26:27,358 INFO L226 Difference]: Without dead ends: 16870 [2021-03-11 12:26:27,358 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 6015.6ms TimeCoverageRelationStatistics Valid=598, Invalid=1472, Unknown=0, NotChecked=0, Total=2070 [2021-03-11 12:26:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16870 states. [2021-03-11 12:26:27,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16870 to 13844. [2021-03-11 12:26:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13844 states, 13840 states have (on average 3.3026734104046245) internal successors, (45709), 13843 states have internal predecessors, (45709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13844 states to 13844 states and 45709 transitions. [2021-03-11 12:26:27,532 INFO L78 Accepts]: Start accepts. Automaton has 13844 states and 45709 transitions. Word has length 31 [2021-03-11 12:26:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:26:27,532 INFO L480 AbstractCegarLoop]: Abstraction has 13844 states and 45709 transitions. [2021-03-11 12:26:27,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13844 states and 45709 transitions. [2021-03-11 12:26:27,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:26:27,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:26:27,544 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:26:27,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-11 12:26:27,544 INFO L428 AbstractCegarLoop]: === Iteration 153 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:26:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:26:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2129378521, now seen corresponding path program 100 times [2021-03-11 12:26:27,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:26:27,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098664788] [2021-03-11 12:26:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:26:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:26:27,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:26:27,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-03-11 12:26:27,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-11 12:26:27,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:27,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:27,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:27,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:27,786 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 12:26:27,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:26:27,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 74.6 percent of original size [2021-03-11 12:26:27,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-03-11 12:26:27,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 60.3 percent of original size [2021-03-11 12:26:27,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 12:26:27,908 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.0 percent of original size [2021-03-11 12:26:27,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:26:27,981 INFO L142 QuantifierPusher]: treesize reduction 53, result has 47.0 percent of original size [2021-03-11 12:26:27,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 12:26:28,059 INFO L142 QuantifierPusher]: treesize reduction 62, result has 55.4 percent of original size [2021-03-11 12:26:28,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-03-11 12:26:28,148 INFO L142 QuantifierPusher]: treesize reduction 68, result has 55.3 percent of original size [2021-03-11 12:26:28,149 INFO L147 QuantifierPusher]: treesize reduction 5, result has 94.0 percent of original size 79 [2021-03-11 12:26:28,241 INFO L142 QuantifierPusher]: treesize reduction 54, result has 60.6 percent of original size [2021-03-11 12:26:28,242 INFO L147 QuantifierPusher]: treesize reduction 5, result has 94.0 percent of original size 78 [2021-03-11 12:26:28,325 INFO L142 QuantifierPusher]: treesize reduction 58, result has 58.9 percent of original size [2021-03-11 12:26:28,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-03-11 12:26:28,418 INFO L142 QuantifierPusher]: treesize reduction 65, result has 58.3 percent of original size [2021-03-11 12:26:28,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-03-11 12:26:28,524 INFO L142 QuantifierPusher]: treesize reduction 21, result has 56.3 percent of original size [2021-03-11 12:26:28,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 12:26:28,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-03-11 12:26:28,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 12:26:28,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:28,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:26:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098664788] [2021-03-11 12:26:28,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:26:28,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:26:28,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485338917] [2021-03-11 12:26:28,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:26:28,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:26:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:26:28,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:26:28,624 INFO L87 Difference]: Start difference. First operand 13844 states and 45709 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:29,404 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-03-11 12:26:29,701 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-03-11 12:26:30,212 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2021-03-11 12:26:30,568 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2021-03-11 12:26:31,040 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-03-11 12:26:31,498 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-03-11 12:26:32,091 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-03-11 12:26:32,784 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2021-03-11 12:26:33,031 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-03-11 12:26:33,329 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-03-11 12:26:33,837 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-03-11 12:26:34,067 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-03-11 12:26:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 12:26:34,576 INFO L93 Difference]: Finished difference Result 15367 states and 50280 transitions. [2021-03-11 12:26:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 12:26:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-11 12:26:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 12:26:34,598 INFO L225 Difference]: With dead ends: 15367 [2021-03-11 12:26:34,598 INFO L226 Difference]: Without dead ends: 15367 [2021-03-11 12:26:34,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3642.0ms TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2021-03-11 12:26:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2021-03-11 12:26:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13851. [2021-03-11 12:26:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13851 states, 13847 states have (on average 3.3025204015310177) internal successors, (45730), 13850 states have internal predecessors, (45730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13851 states to 13851 states and 45730 transitions. [2021-03-11 12:26:34,764 INFO L78 Accepts]: Start accepts. Automaton has 13851 states and 45730 transitions. Word has length 31 [2021-03-11 12:26:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 12:26:34,764 INFO L480 AbstractCegarLoop]: Abstraction has 13851 states and 45730 transitions. [2021-03-11 12:26:34,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13851 states and 45730 transitions. [2021-03-11 12:26:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-11 12:26:34,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 12:26:34,776 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 12:26:34,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-11 12:26:34,776 INFO L428 AbstractCegarLoop]: === Iteration 154 === [reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr0ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr3ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, reader_twoErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_twoErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 12:26:34,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 12:26:34,776 INFO L82 PathProgramCache]: Analyzing trace with hash -29272083, now seen corresponding path program 101 times [2021-03-11 12:26:34,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 12:26:34,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907488671] [2021-03-11 12:26:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 12:26:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 12:26:34,807 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-03-11 12:26:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-11 12:26:34,824 INFO L142 QuantifierPusher]: treesize reduction 3, result has 96.5 percent of original size [2021-03-11 12:26:34,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-03-11 12:26:34,870 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.3 percent of original size [2021-03-11 12:26:34,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 12:26:34,910 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size [2021-03-11 12:26:34,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:26:34,960 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size [2021-03-11 12:26:34,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:26:35,013 INFO L142 QuantifierPusher]: treesize reduction 3, result has 94.1 percent of original size [2021-03-11 12:26:35,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-11 12:26:35,066 INFO L142 QuantifierPusher]: treesize reduction 21, result has 72.0 percent of original size [2021-03-11 12:26:35,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 12:26:35,124 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-03-11 12:26:35,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 12:26:35,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 68.6 percent of original size [2021-03-11 12:26:35,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-03-11 12:26:35,211 INFO L142 QuantifierPusher]: treesize reduction 66, result has 48.4 percent of original size [2021-03-11 12:26:35,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:26:35,306 INFO L142 QuantifierPusher]: treesize reduction 66, result has 48.4 percent of original size [2021-03-11 12:26:35,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-03-11 12:26:35,398 INFO L142 QuantifierPusher]: treesize reduction 75, result has 57.4 percent of original size [2021-03-11 12:26:35,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-03-11 12:26:35,511 INFO L142 QuantifierPusher]: treesize reduction 117, result has 69.8 percent of original size [2021-03-11 12:26:35,513 INFO L147 QuantifierPusher]: treesize reduction 16, result has 94.1 percent of original size 254 [2021-03-11 12:26:35,713 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2021-03-11 12:26:35,715 INFO L142 QuantifierPusher]: treesize reduction 59, result has 69.1 percent of original size [2021-03-11 12:26:35,716 INFO L147 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size 117 [2021-03-11 12:26:35,862 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2021-03-11 12:26:35,864 INFO L142 QuantifierPusher]: treesize reduction 86, result has 57.6 percent of original size [2021-03-11 12:26:35,865 INFO L147 QuantifierPusher]: treesize reduction 10, result has 91.5 percent of original size 107 [2021-03-11 12:26:36,005 INFO L142 QuantifierPusher]: treesize reduction 41, result has 47.4 percent of original size [2021-03-11 12:26:36,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 12:26:36,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:36,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 12:26:36,108 INFO L142 QuantifierPusher]: treesize reduction 10, result has 75.0 percent of original size [2021-03-11 12:26:36,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-11 12:26:36,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:36,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:36,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 12:26:36,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 12:26:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 12:26:36,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907488671] [2021-03-11 12:26:36,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 12:26:36,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-03-11 12:26:36,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993411186] [2021-03-11 12:26:36,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-11 12:26:36,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 12:26:36,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-11 12:26:36,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-03-11 12:26:36,167 INFO L87 Difference]: Start difference. First operand 13851 states and 45730 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 12:26:37,441 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2021-03-11 12:26:37,654 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2021-03-11 12:26:38,031 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-03-11 12:26:38,311 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-03-11 12:26:38,740 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-03-11 12:26:39,544 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-03-11 12:26:40,034 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-03-11 12:26:40,412 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-03-11 12:26:41,361 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-03-11 12:26:42,226 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-03-11 12:26:43,232 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-03-11 12:26:43,580 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2021-03-11 12:26:44,024 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-03-11 12:26:44,410 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-03-11 12:26:44,754 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2021-03-11 12:26:45,260 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-03-11 12:26:46,026 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-03-11 12:26:46,406 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-03-11 12:26:46,917 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 Received shutdown request... [2021-03-11 12:26:47,339 WARN L222 SmtUtils]: Removed 4 from assertion stack [2021-03-11 12:26:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-11 12:26:47,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-11 12:26:47,340 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 12:26:47,342 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 12:26:47,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 12:26:47 BasicIcfg [2021-03-11 12:26:47,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 12:26:47,343 INFO L168 Benchmark]: Toolchain (without parser) took 789052.42 ms. Allocated memory was 356.5 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 319.3 MB in the beginning and 972.1 MB in the end (delta: -652.8 MB). Peak memory consumption was 584.5 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory was 337.8 MB in the beginning and 337.7 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.89 ms. Allocated memory is still 356.5 MB. Free memory was 318.7 MB in the beginning and 281.2 MB in the end (delta: 37.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 356.5 MB. Free memory was 281.2 MB in the beginning and 278.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: Boogie Preprocessor took 19.37 ms. Allocated memory is still 356.5 MB. Free memory was 278.2 MB in the beginning and 276.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: RCFGBuilder took 490.84 ms. Allocated memory is still 356.5 MB. Free memory was 276.1 MB in the beginning and 235.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L168 Benchmark]: TraceAbstraction took 787966.64 ms. Allocated memory was 356.5 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 235.1 MB in the beginning and 972.1 MB in the end (delta: -737.0 MB). Peak memory consumption was 499.1 MB. Max. memory is 16.0 GB. [2021-03-11 12:26:47,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory was 337.8 MB in the beginning and 337.7 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 514.89 ms. Allocated memory is still 356.5 MB. Free memory was 318.7 MB in the beginning and 281.2 MB in the end (delta: 37.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.59 ms. Allocated memory is still 356.5 MB. Free memory was 281.2 MB in the beginning and 278.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.37 ms. Allocated memory is still 356.5 MB. Free memory was 278.2 MB in the beginning and 276.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 490.84 ms. Allocated memory is still 356.5 MB. Free memory was 276.1 MB in the beginning and 235.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 787966.64 ms. Allocated memory was 356.5 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 235.1 MB in the beginning and 972.1 MB in the end (delta: -737.0 MB). Peak memory consumption was 499.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4869.0ms, 188 PlacesBefore, 58 PlacesAfterwards, 200 TransitionsBefore, 64 TransitionsAfterwards, 15102 CoEnabledTransitionPairs, 10 FixpointIterations, 31 TrivialSequentialCompositions, 110 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 32 ConcurrentYvCompositions, 6 ChoiceCompositions, 179 TotalNumberOfCompositions, 39122 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18502, positive: 17830, positive conditional: 0, positive unconditional: 17830, negative: 672, negative conditional: 0, negative unconditional: 672, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10141, positive: 9999, positive conditional: 0, positive unconditional: 9999, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10141, positive: 9799, positive conditional: 0, positive unconditional: 9799, negative: 342, negative conditional: 0, negative unconditional: 342, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 342, positive: 200, positive conditional: 0, positive unconditional: 200, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 793, positive: 240, positive conditional: 0, positive unconditional: 240, negative: 552, negative conditional: 0, negative unconditional: 552, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18502, positive: 7831, positive conditional: 0, positive unconditional: 7831, negative: 530, negative conditional: 0, negative unconditional: 530, unknown: 10141, unknown conditional: 0, unknown unconditional: 10141] , Statistics on independence cache: Total cache size (in pairs): 661, Positive cache size: 604, Positive conditional cache size: 0, Positive unconditional cache size: 604, Negative cache size: 57, Negative conditional cache size: 0, Negative unconditional cache size: 57 - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 1060). Cancelled while BasicCegarLoop was constructing difference of abstraction (13851states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 113 for 169ms.. - TimeoutResultAtElement [Line: 1065]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 1065). Cancelled while BasicCegarLoop was constructing difference of abstraction (13851states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 113 for 169ms.. - TimeoutResultAtElement [Line: 1064]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 1064). Cancelled while BasicCegarLoop was constructing difference of abstraction (13851states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 113 for 169ms.. - TimeoutResultAtElement [Line: 1061]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 1061). Cancelled while BasicCegarLoop was constructing difference of abstraction (13851states) and FLOYD_HOARE automaton (currently 31 states, 19 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 113 for 169ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 182 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 787798.7ms, OverallIterations: 154, TraceHistogramMax: 1, EmptinessCheckTime: 1378.2ms, AutomataDifference: 660324.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4977.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8797 SDtfs, 45962 SDslu, 40300 SDs, 0 SdLazy, 349259 SolverSat, 4876 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 177107.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6002 GetRequests, 192 SyntacticMatches, 196 SemanticMatches, 5613 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31248 ImplicationChecksByTransitivity, 423575.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13868occurred in iteration=151, InterpolantAutomatonStates: 4014, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20150.5ms AutomataMinimizationTime, 153 MinimizatonAttempts, 280431 StatesRemovedByMinimization, 151 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 174.4ms SsaConstructionTime, 1365.6ms SatisfiabilityAnalysisTime, 98734.8ms InterpolantComputationTime, 4547 NumberOfCodeBlocks, 4547 NumberOfCodeBlocksAsserted, 154 NumberOfCheckSat, 4393 ConstructedInterpolants, 0 QuantifiedInterpolants, 147353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 154 InterpolantComputations, 154 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown