/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:57:46,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:57:46,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:57:46,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:57:46,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:57:46,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:57:46,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:57:46,428 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-NoLbe.epf [2021-07-13 18:57:46,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:57:46,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:57:46,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:57:46,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:57:46,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:57:46,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:57:46,460 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:57:46,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:57:46,460 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:57:46,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:57:46,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:57:46,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:57:46,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:57:46,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:57:46,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:57:46,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:57:46,463 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:57:46,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:57:46,463 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:57:46,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:57:46,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:57:46,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:57:46,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:57:46,690 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:57:46,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-07-13 18:57:46,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7a95999/d5562902a686495399188c0dc45de5f5/FLAGc81b0ba60 [2021-07-13 18:57:47,185 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:57:47,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-07-13 18:57:47,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7a95999/d5562902a686495399188c0dc45de5f5/FLAGc81b0ba60 [2021-07-13 18:57:47,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e7a95999/d5562902a686495399188c0dc45de5f5 [2021-07-13 18:57:47,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:57:47,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:57:47,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:57:47,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:57:47,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:57:47,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7094e1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47, skipping insertion in model container [2021-07-13 18:57:47,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:57:47,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:57:47,357 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:57:47,521 WARN L224 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_1w1r-2.i[39095,39108] [2021-07-13 18:57:47,525 WARN L224 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_1w1r-2.i[39180,39193] [2021-07-13 18:57:47,526 WARN L224 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_1w1r-2.i[39232,39245] [2021-07-13 18:57:47,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:57:47,543 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:57:47,558 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-13 18:57:47,577 WARN L224 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_1w1r-2.i[39095,39108] [2021-07-13 18:57:47,578 WARN L224 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_1w1r-2.i[39180,39193] [2021-07-13 18:57:47,578 WARN L224 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_1w1r-2.i[39232,39245] [2021-07-13 18:57:47,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:57:47,609 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:57:47,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47 WrapperNode [2021-07-13 18:57:47,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:57:47,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:57:47,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:57:47,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:57:47,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:57:47,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:57:47,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:57:47,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:57:47,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (1/1) ... [2021-07-13 18:57:47,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:57:47,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:57:47,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:57:47,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:57:47,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (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 [2021-07-13 18:57:47,742 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2021-07-13 18:57:47,743 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2021-07-13 18:57:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:57:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:57:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-13 18:57:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:57:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:57:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:57:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:57:47,745 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:57:48,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:57:48,210 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-07-13 18:57:48,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:57:48 BoogieIcfgContainer [2021-07-13 18:57:48,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:57:48,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:57:48,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:57:48,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:57:48,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:57:47" (1/3) ... [2021-07-13 18:57:48,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9dc6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:57:48, skipping insertion in model container [2021-07-13 18:57:48,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:57:47" (2/3) ... [2021-07-13 18:57:48,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9dc6cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:57:48, skipping insertion in model container [2021-07-13 18:57:48,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:57:48" (3/3) ... [2021-07-13 18:57:48,230 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2021-07-13 18:57:48,233 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:57:48,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:57:48,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-13 18:57:48,234 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,253 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,254 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,255 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,256 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,257 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,258 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,259 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,260 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,261 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,262 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,263 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,264 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,265 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,266 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,267 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,268 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,269 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,270 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,271 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,272 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,273 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,274 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,275 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,276 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,277 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,278 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,279 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,280 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,281 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,282 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,287 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:57:48,291 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-07-13 18:57:48,305 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-13 18:57:48,324 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:57:48,324 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:57:48,324 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:57:48,325 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:57:48,325 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:57:48,325 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:57:48,325 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:57:48,325 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == reader_fnThread1of1ForFork0======== [2021-07-13 18:57:48,333 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 142 transitions, 292 flow [2021-07-13 18:57:48,397 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2067 states, 2064 states have (on average 2.142926356589147) internal successors, (4423), 2066 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 2067 states, 2064 states have (on average 2.142926356589147) internal successors, (4423), 2066 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-13 18:57:48,407 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:48,408 INFO L508 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, 1, 1, 1, 1] [2021-07-13 18:57:48,408 INFO L430 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:48,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1950975089, now seen corresponding path program 1 times [2021-07-13 18:57:48,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:48,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999908998] [2021-07-13 18:57:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:48,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:48,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999908998] [2021-07-13 18:57:48,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999908998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:48,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:48,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 18:57:48,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910958383] [2021-07-13 18:57:48,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-13 18:57:48,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:48,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-13 18:57:48,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-13 18:57:48,606 INFO L87 Difference]: Start difference. First operand has 2067 states, 2064 states have (on average 2.142926356589147) internal successors, (4423), 2066 states have internal predecessors, (4423), 0 states have call successors, (0), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:48,635 INFO L93 Difference]: Finished difference Result 2067 states and 4201 transitions. [2021-07-13 18:57:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-13 18:57:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-07-13 18:57:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:48,660 INFO L225 Difference]: With dead ends: 2067 [2021-07-13 18:57:48,660 INFO L226 Difference]: Without dead ends: 2067 [2021-07-13 18:57:48,661 INFO L764 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 [2021-07-13 18:57:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2021-07-13 18:57:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2067. [2021-07-13 18:57:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2067 states, 2064 states have (on average 2.0353682170542635) internal successors, (4201), 2066 states have internal predecessors, (4201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 4201 transitions. [2021-07-13 18:57:48,769 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 4201 transitions. Word has length 35 [2021-07-13 18:57:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:48,769 INFO L482 AbstractCegarLoop]: Abstraction has 2067 states and 4201 transitions. [2021-07-13 18:57:48,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 4201 transitions. [2021-07-13 18:57:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-13 18:57:48,770 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:48,770 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-13 18:57:48,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:57:48,771 INFO L430 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -350717078, now seen corresponding path program 1 times [2021-07-13 18:57:48,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:48,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535731917] [2021-07-13 18:57:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:48,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:48,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535731917] [2021-07-13 18:57:48,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535731917] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:48,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:48,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 18:57:48,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654149612] [2021-07-13 18:57:48,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 18:57:48,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:48,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 18:57:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:57:48,851 INFO L87 Difference]: Start difference. First operand 2067 states and 4201 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:48,888 INFO L93 Difference]: Finished difference Result 3359 states and 6857 transitions. [2021-07-13 18:57:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 18:57:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2021-07-13 18:57:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:48,900 INFO L225 Difference]: With dead ends: 3359 [2021-07-13 18:57:48,900 INFO L226 Difference]: Without dead ends: 3359 [2021-07-13 18:57:48,900 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 18:57:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-07-13 18:57:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 2543. [2021-07-13 18:57:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2540 states have (on average 2.0476377952755906) internal successors, (5201), 2542 states have internal predecessors, (5201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 5201 transitions. [2021-07-13 18:57:48,947 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 5201 transitions. Word has length 36 [2021-07-13 18:57:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:48,947 INFO L482 AbstractCegarLoop]: Abstraction has 2543 states and 5201 transitions. [2021-07-13 18:57:48,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:48,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 5201 transitions. [2021-07-13 18:57:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-13 18:57:48,958 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:48,958 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:48,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:57:48,958 INFO L430 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash 225905160, now seen corresponding path program 1 times [2021-07-13 18:57:48,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:48,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083227390] [2021-07-13 18:57:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:49,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:49,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083227390] [2021-07-13 18:57:49,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083227390] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:49,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:49,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-13 18:57:49,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716788218] [2021-07-13 18:57:49,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-13 18:57:49,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-13 18:57:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:57:49,417 INFO L87 Difference]: Start difference. First operand 2543 states and 5201 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:50,398 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-07-13 18:57:50,671 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-07-13 18:57:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:51,226 INFO L93 Difference]: Finished difference Result 2806 states and 5743 transitions. [2021-07-13 18:57:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-13 18:57:51,226 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-07-13 18:57:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:51,235 INFO L225 Difference]: With dead ends: 2806 [2021-07-13 18:57:51,235 INFO L226 Difference]: Without dead ends: 2691 [2021-07-13 18:57:51,236 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1458.1ms TimeCoverageRelationStatistics Valid=375, Invalid=1031, Unknown=0, NotChecked=0, Total=1406 [2021-07-13 18:57:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-07-13 18:57:51,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2499. [2021-07-13 18:57:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2496 states have (on average 2.0516826923076925) internal successors, (5121), 2498 states have internal predecessors, (5121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 5121 transitions. [2021-07-13 18:57:51,283 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 5121 transitions. Word has length 65 [2021-07-13 18:57:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:51,283 INFO L482 AbstractCegarLoop]: Abstraction has 2499 states and 5121 transitions. [2021-07-13 18:57:51,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 5121 transitions. [2021-07-13 18:57:51,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:57:51,286 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:51,286 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:51,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:57:51,286 INFO L430 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:51,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:51,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1391035745, now seen corresponding path program 1 times [2021-07-13 18:57:51,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:51,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436286313] [2021-07-13 18:57:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:51,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:51,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436286313] [2021-07-13 18:57:51,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436286313] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:51,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:51,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:57:51,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779123128] [2021-07-13 18:57:51,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:57:51,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:51,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:57:51,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:57:51,970 INFO L87 Difference]: Start difference. First operand 2499 states and 5121 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:53,311 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 18:57:53,572 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-07-13 18:57:53,774 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-13 18:57:53,963 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-07-13 18:57:54,197 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-13 18:57:54,394 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-13 18:57:54,572 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-07-13 18:57:54,797 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 18:57:55,027 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-07-13 18:57:55,213 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-07-13 18:57:55,397 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-07-13 18:57:55,630 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-13 18:57:55,887 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 83 [2021-07-13 18:57:56,216 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-13 18:57:56,477 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-13 18:57:56,837 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2021-07-13 18:57:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:57:58,091 INFO L93 Difference]: Finished difference Result 3516 states and 7207 transitions. [2021-07-13 18:57:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 18:57:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:57:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:57:58,106 INFO L225 Difference]: With dead ends: 3516 [2021-07-13 18:57:58,106 INFO L226 Difference]: Without dead ends: 3516 [2021-07-13 18:57:58,108 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 5148.3ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 18:57:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-07-13 18:57:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 2675. [2021-07-13 18:57:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2672 states have (on average 2.0486526946107784) internal successors, (5474), 2674 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 5474 transitions. [2021-07-13 18:57:58,161 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 5474 transitions. Word has length 85 [2021-07-13 18:57:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:57:58,162 INFO L482 AbstractCegarLoop]: Abstraction has 2675 states and 5474 transitions. [2021-07-13 18:57:58,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:57:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 5474 transitions. [2021-07-13 18:57:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:57:58,165 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:57:58,166 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:57:58,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:57:58,168 INFO L430 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:57:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:57:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash 278399633, now seen corresponding path program 2 times [2021-07-13 18:57:58,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:57:58,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126989192] [2021-07-13 18:57:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:57:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:57:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:57:59,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:57:59,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126989192] [2021-07-13 18:57:59,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126989192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:57:59,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:57:59,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:57:59,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959378949] [2021-07-13 18:57:59,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:57:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:57:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:57:59,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:57:59,017 INFO L87 Difference]: Start difference. First operand 2675 states and 5474 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:00,030 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-07-13 18:58:00,313 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 18:58:00,586 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-07-13 18:58:00,795 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-13 18:58:01,015 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-07-13 18:58:01,227 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2021-07-13 18:58:01,435 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-13 18:58:01,625 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-13 18:58:01,828 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-07-13 18:58:02,025 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 18:58:02,259 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-07-13 18:58:02,462 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-13 18:58:02,666 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-07-13 18:58:02,859 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 18:58:03,088 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 18:58:03,341 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-07-13 18:58:03,606 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-13 18:58:03,904 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-13 18:58:04,140 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-13 18:58:04,492 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2021-07-13 18:58:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:05,638 INFO L93 Difference]: Finished difference Result 3634 states and 7456 transitions. [2021-07-13 18:58:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 18:58:05,638 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:05,649 INFO L225 Difference]: With dead ends: 3634 [2021-07-13 18:58:05,649 INFO L226 Difference]: Without dead ends: 3634 [2021-07-13 18:58:05,650 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 5665.7ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 18:58:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2021-07-13 18:58:05,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2684. [2021-07-13 18:58:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2681 states have (on average 2.0488623647892577) internal successors, (5493), 2683 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 5493 transitions. [2021-07-13 18:58:05,695 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 5493 transitions. Word has length 85 [2021-07-13 18:58:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:05,695 INFO L482 AbstractCegarLoop]: Abstraction has 2684 states and 5493 transitions. [2021-07-13 18:58:05,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 5493 transitions. [2021-07-13 18:58:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:05,698 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:05,698 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:05,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:58:05,699 INFO L430 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:05,699 INFO L82 PathProgramCache]: Analyzing trace with hash 337074681, now seen corresponding path program 3 times [2021-07-13 18:58:05,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:05,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542261202] [2021-07-13 18:58:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:06,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:06,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542261202] [2021-07-13 18:58:06,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542261202] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:06,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:06,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:06,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634151769] [2021-07-13 18:58:06,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:06,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:06,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:06,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:06,396 INFO L87 Difference]: Start difference. First operand 2684 states and 5493 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:07,676 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-13 18:58:07,962 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-13 18:58:08,174 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 18:58:08,391 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 18:58:08,564 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-13 18:58:08,770 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-13 18:58:08,952 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 18:58:09,132 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-13 18:58:09,329 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 18:58:09,511 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 18:58:09,723 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 18:58:09,924 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 18:58:10,126 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 18:58:10,314 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 18:58:10,522 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-13 18:58:10,797 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-13 18:58:11,041 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 18:58:11,237 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 18:58:11,446 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 18:58:11,671 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-13 18:58:11,860 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 18:58:12,095 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 18:58:12,405 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 18:58:12,778 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 18:58:13,342 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 18:58:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:13,738 INFO L93 Difference]: Finished difference Result 3610 states and 7404 transitions. [2021-07-13 18:58:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 18:58:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:13,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:13,748 INFO L225 Difference]: With dead ends: 3610 [2021-07-13 18:58:13,748 INFO L226 Difference]: Without dead ends: 3610 [2021-07-13 18:58:13,749 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 6459.8ms TimeCoverageRelationStatistics Valid=1519, Invalid=4333, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 18:58:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-07-13 18:58:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 2685. [2021-07-13 18:58:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2682 states have (on average 2.0488441461595825) internal successors, (5495), 2684 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 5495 transitions. [2021-07-13 18:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 5495 transitions. Word has length 85 [2021-07-13 18:58:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:13,792 INFO L482 AbstractCegarLoop]: Abstraction has 2685 states and 5495 transitions. [2021-07-13 18:58:13,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 5495 transitions. [2021-07-13 18:58:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:13,795 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:13,795 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:13,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:58:13,796 INFO L430 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:13,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1109201329, now seen corresponding path program 4 times [2021-07-13 18:58:13,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:13,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282863815] [2021-07-13 18:58:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:14,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:14,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282863815] [2021-07-13 18:58:14,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282863815] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:14,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:14,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:14,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827427752] [2021-07-13 18:58:14,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:14,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:14,506 INFO L87 Difference]: Start difference. First operand 2685 states and 5495 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:15,342 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2021-07-13 18:58:15,560 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-07-13 18:58:15,753 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-07-13 18:58:15,931 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-13 18:58:16,120 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 18:58:16,297 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-13 18:58:16,492 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-13 18:58:16,685 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-13 18:58:16,850 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2021-07-13 18:58:17,047 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 18:58:17,230 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-07-13 18:58:17,439 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 18:58:17,641 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-07-13 18:58:17,834 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-13 18:58:18,019 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-13 18:58:18,219 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 18:58:18,479 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-13 18:58:18,750 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-07-13 18:58:18,947 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-13 18:58:19,166 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 18:58:19,387 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-07-13 18:58:19,602 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-07-13 18:58:19,857 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 18:58:20,130 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-13 18:58:20,421 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-13 18:58:20,801 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-07-13 18:58:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:21,091 INFO L93 Difference]: Finished difference Result 3579 states and 7339 transitions. [2021-07-13 18:58:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 18:58:21,091 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:21,102 INFO L225 Difference]: With dead ends: 3579 [2021-07-13 18:58:21,102 INFO L226 Difference]: Without dead ends: 3579 [2021-07-13 18:58:21,103 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 6114.3ms TimeCoverageRelationStatistics Valid=1368, Invalid=3324, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 18:58:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-07-13 18:58:21,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 2841. [2021-07-13 18:58:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2838 states have (on average 2.0496828752642706) internal successors, (5817), 2840 states have internal predecessors, (5817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 5817 transitions. [2021-07-13 18:58:21,164 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 5817 transitions. Word has length 85 [2021-07-13 18:58:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:21,164 INFO L482 AbstractCegarLoop]: Abstraction has 2841 states and 5817 transitions. [2021-07-13 18:58:21,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 5817 transitions. [2021-07-13 18:58:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:21,167 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:21,168 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:21,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:58:21,168 INFO L430 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash 442382817, now seen corresponding path program 5 times [2021-07-13 18:58:21,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:21,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876218849] [2021-07-13 18:58:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:21,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:21,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876218849] [2021-07-13 18:58:21,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876218849] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:21,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:21,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:21,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067143762] [2021-07-13 18:58:21,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:21,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:21,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:21,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:21,902 INFO L87 Difference]: Start difference. First operand 2841 states and 5817 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:24,418 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-07-13 18:58:24,675 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-07-13 18:58:24,825 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-13 18:58:24,955 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-07-13 18:58:25,251 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-13 18:58:25,405 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-13 18:58:25,582 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-07-13 18:58:25,743 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:58:25,896 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-13 18:58:26,037 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-13 18:58:26,229 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-07-13 18:58:26,446 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-13 18:58:26,579 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-13 18:58:26,779 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2021-07-13 18:58:26,943 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 18:58:27,118 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-13 18:58:27,321 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 18:58:27,504 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2021-07-13 18:58:27,689 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-13 18:58:27,932 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-13 18:58:28,125 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 18:58:28,315 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 18:58:28,511 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-07-13 18:58:28,723 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2021-07-13 18:58:28,928 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 18:58:29,178 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-13 18:58:29,382 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-07-13 18:58:29,604 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-07-13 18:58:29,808 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-07-13 18:58:30,029 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-07-13 18:58:30,209 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 18:58:30,487 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 18:58:30,753 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 18:58:30,962 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-07-13 18:58:31,198 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-13 18:58:31,459 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-13 18:58:31,682 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 18:58:31,952 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-07-13 18:58:32,263 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-13 18:58:32,519 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-07-13 18:58:32,863 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-07-13 18:58:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:33,223 INFO L93 Difference]: Finished difference Result 3793 states and 7777 transitions. [2021-07-13 18:58:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-13 18:58:33,224 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:33,229 INFO L225 Difference]: With dead ends: 3793 [2021-07-13 18:58:33,230 INFO L226 Difference]: Without dead ends: 3793 [2021-07-13 18:58:33,231 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 10453.0ms TimeCoverageRelationStatistics Valid=2862, Invalid=7038, Unknown=0, NotChecked=0, Total=9900 [2021-07-13 18:58:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-07-13 18:58:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3055. [2021-07-13 18:58:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 3052 states have (on average 2.051114023591088) internal successors, (6260), 3054 states have internal predecessors, (6260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 6260 transitions. [2021-07-13 18:58:33,276 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 6260 transitions. Word has length 85 [2021-07-13 18:58:33,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:33,276 INFO L482 AbstractCegarLoop]: Abstraction has 3055 states and 6260 transitions. [2021-07-13 18:58:33,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 6260 transitions. [2021-07-13 18:58:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:33,279 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:33,279 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:33,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:58:33,280 INFO L430 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:33,280 INFO L82 PathProgramCache]: Analyzing trace with hash -171396979, now seen corresponding path program 6 times [2021-07-13 18:58:33,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:33,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273469155] [2021-07-13 18:58:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:33,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:33,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273469155] [2021-07-13 18:58:33,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273469155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:33,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:33,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:33,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766033537] [2021-07-13 18:58:33,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:33,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:33,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:33,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:33,920 INFO L87 Difference]: Start difference. First operand 3055 states and 6260 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:35,373 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2021-07-13 18:58:35,858 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2021-07-13 18:58:36,504 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-07-13 18:58:36,771 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-13 18:58:36,922 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-13 18:58:37,057 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-07-13 18:58:37,346 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-13 18:58:37,489 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-13 18:58:37,690 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2021-07-13 18:58:37,861 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:58:38,016 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-13 18:58:38,155 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-13 18:58:38,344 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-13 18:58:38,538 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-13 18:58:38,671 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-13 18:58:38,873 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 18:58:39,042 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-13 18:58:39,206 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-13 18:58:39,413 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 18:58:39,591 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2021-07-13 18:58:39,763 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-13 18:58:39,986 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 18:58:40,185 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-07-13 18:58:40,381 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 18:58:40,576 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-13 18:58:40,784 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2021-07-13 18:58:40,971 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 18:58:41,223 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 18:58:41,426 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-07-13 18:58:41,640 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 18:58:41,836 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-07-13 18:58:42,064 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-07-13 18:58:42,243 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-07-13 18:58:42,513 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2021-07-13 18:58:42,782 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-13 18:58:42,986 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-13 18:58:43,220 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 18:58:43,475 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-07-13 18:58:43,699 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2021-07-13 18:58:43,968 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-07-13 18:58:44,259 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-13 18:58:44,514 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-13 18:58:44,845 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-13 18:58:45,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:45,194 INFO L93 Difference]: Finished difference Result 3934 states and 8076 transitions. [2021-07-13 18:58:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-13 18:58:45,195 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:45,201 INFO L225 Difference]: With dead ends: 3934 [2021-07-13 18:58:45,201 INFO L226 Difference]: Without dead ends: 3934 [2021-07-13 18:58:45,202 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 10413.6ms TimeCoverageRelationStatistics Valid=2906, Invalid=7194, Unknown=0, NotChecked=0, Total=10100 [2021-07-13 18:58:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-07-13 18:58:45,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3109. [2021-07-13 18:58:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3109 states, 3106 states have (on average 2.0521571152607856) internal successors, (6374), 3108 states have internal predecessors, (6374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 6374 transitions. [2021-07-13 18:58:45,243 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 6374 transitions. Word has length 85 [2021-07-13 18:58:45,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:45,243 INFO L482 AbstractCegarLoop]: Abstraction has 3109 states and 6374 transitions. [2021-07-13 18:58:45,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 6374 transitions. [2021-07-13 18:58:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:45,246 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:45,246 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:45,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:58:45,246 INFO L430 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:45,247 INFO L82 PathProgramCache]: Analyzing trace with hash 874507825, now seen corresponding path program 7 times [2021-07-13 18:58:45,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:45,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650655672] [2021-07-13 18:58:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:45,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:45,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650655672] [2021-07-13 18:58:45,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650655672] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:45,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:45,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:45,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530700356] [2021-07-13 18:58:45,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:45,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:45,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:45,837 INFO L87 Difference]: Start difference. First operand 3109 states and 6374 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:47,187 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2021-07-13 18:58:48,019 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-13 18:58:48,432 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-07-13 18:58:48,704 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-13 18:58:48,872 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-13 18:58:49,296 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-13 18:58:49,440 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-13 18:58:49,616 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-13 18:58:49,785 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:58:49,939 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-13 18:58:50,080 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-13 18:58:50,260 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-13 18:58:50,414 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-13 18:58:50,610 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-13 18:58:50,746 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-13 18:58:50,946 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 18:58:51,117 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-13 18:58:51,291 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-13 18:58:51,541 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 18:58:51,725 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2021-07-13 18:58:51,891 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-13 18:58:52,123 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 18:58:52,322 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 18:58:52,536 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 18:58:52,741 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-13 18:58:52,952 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 18:58:53,145 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 18:58:53,407 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 18:58:53,611 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 18:58:53,829 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 18:58:54,030 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-13 18:58:54,266 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-13 18:58:54,457 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-13 18:58:54,731 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 18:58:55,000 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 18:58:55,213 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-13 18:58:55,453 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 18:58:55,702 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 18:58:55,929 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 18:58:56,191 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-13 18:58:56,488 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-13 18:58:56,748 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 18:58:57,068 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-13 18:58:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:58:57,332 INFO L93 Difference]: Finished difference Result 3742 states and 7662 transitions. [2021-07-13 18:58:57,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-13 18:58:57,333 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:58:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:58:57,338 INFO L225 Difference]: With dead ends: 3742 [2021-07-13 18:58:57,338 INFO L226 Difference]: Without dead ends: 3742 [2021-07-13 18:58:57,340 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 10799.9ms TimeCoverageRelationStatistics Valid=3036, Invalid=7470, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 18:58:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-07-13 18:58:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3083. [2021-07-13 18:58:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 3080 states have (on average 2.051948051948052) internal successors, (6320), 3082 states have internal predecessors, (6320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 6320 transitions. [2021-07-13 18:58:57,383 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 6320 transitions. Word has length 85 [2021-07-13 18:58:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:58:57,383 INFO L482 AbstractCegarLoop]: Abstraction has 3083 states and 6320 transitions. [2021-07-13 18:58:57,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 6320 transitions. [2021-07-13 18:58:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:58:57,386 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:58:57,387 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:58:57,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:58:57,387 INFO L430 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:58:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:58:57,387 INFO L82 PathProgramCache]: Analyzing trace with hash 147448899, now seen corresponding path program 8 times [2021-07-13 18:58:57,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:58:57,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237368764] [2021-07-13 18:58:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:58:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:58:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:58:57,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:58:57,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237368764] [2021-07-13 18:58:57,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237368764] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:58:57,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:58:57,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:58:57,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360576689] [2021-07-13 18:58:57,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:58:57,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:58:57,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:58:57,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:58:57,933 INFO L87 Difference]: Start difference. First operand 3083 states and 6320 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:58:59,183 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 18:58:59,344 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 18:58:59,522 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 18:58:59,703 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 18:58:59,868 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 18:59:00,022 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 18:59:00,192 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 18:59:00,392 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 18:59:00,564 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 18:59:00,749 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 18:59:00,928 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 18:59:01,143 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-13 18:59:01,383 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 18:59:01,582 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 18:59:01,877 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 18:59:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:02,799 INFO L93 Difference]: Finished difference Result 4578 states and 9397 transitions. [2021-07-13 18:59:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 18:59:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:02,806 INFO L225 Difference]: With dead ends: 4578 [2021-07-13 18:59:02,806 INFO L226 Difference]: Without dead ends: 4578 [2021-07-13 18:59:02,807 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4412.3ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 18:59:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2021-07-13 18:59:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3198. [2021-07-13 18:59:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 3195 states have (on average 2.050391236306729) internal successors, (6551), 3197 states have internal predecessors, (6551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:02,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 6551 transitions. [2021-07-13 18:59:02,852 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 6551 transitions. Word has length 85 [2021-07-13 18:59:02,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:02,852 INFO L482 AbstractCegarLoop]: Abstraction has 3198 states and 6551 transitions. [2021-07-13 18:59:02,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:02,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 6551 transitions. [2021-07-13 18:59:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:02,856 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:02,856 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:02,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-13 18:59:02,856 INFO L430 AbstractCegarLoop]: === Iteration 12 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:02,857 INFO L82 PathProgramCache]: Analyzing trace with hash -965187213, now seen corresponding path program 9 times [2021-07-13 18:59:02,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:02,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527759549] [2021-07-13 18:59:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:03,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:03,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527759549] [2021-07-13 18:59:03,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527759549] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:03,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:03,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:03,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921723323] [2021-07-13 18:59:03,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:03,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:03,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:03,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:03,480 INFO L87 Difference]: Start difference. First operand 3198 states and 6551 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:04,758 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 18:59:04,921 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 18:59:05,096 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 18:59:05,264 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-13 18:59:05,446 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 18:59:05,618 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 18:59:05,777 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 18:59:05,952 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 18:59:06,155 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 18:59:06,342 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 18:59:06,514 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 18:59:06,684 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 18:59:06,874 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 18:59:07,103 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 18:59:07,331 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-13 18:59:07,566 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 18:59:07,781 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 18:59:08,068 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 18:59:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:08,948 INFO L93 Difference]: Finished difference Result 4696 states and 9646 transitions. [2021-07-13 18:59:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 18:59:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:08,955 INFO L225 Difference]: With dead ends: 4696 [2021-07-13 18:59:08,955 INFO L226 Difference]: Without dead ends: 4696 [2021-07-13 18:59:08,956 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 4950.5ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 18:59:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2021-07-13 18:59:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 3207. [2021-07-13 18:59:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 3204 states have (on average 2.050561797752809) internal successors, (6570), 3206 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 6570 transitions. [2021-07-13 18:59:09,001 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 6570 transitions. Word has length 85 [2021-07-13 18:59:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:09,001 INFO L482 AbstractCegarLoop]: Abstraction has 3207 states and 6570 transitions. [2021-07-13 18:59:09,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 6570 transitions. [2021-07-13 18:59:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:09,005 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:09,005 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:09,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-13 18:59:09,005 INFO L430 AbstractCegarLoop]: === Iteration 13 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash -906512165, now seen corresponding path program 10 times [2021-07-13 18:59:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:09,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667188356] [2021-07-13 18:59:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:09,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:09,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667188356] [2021-07-13 18:59:09,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667188356] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:09,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:09,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:09,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200551585] [2021-07-13 18:59:09,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:09,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:09,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:09,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:09,544 INFO L87 Difference]: Start difference. First operand 3207 states and 6570 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:10,679 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-13 18:59:10,893 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-13 18:59:11,071 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 18:59:11,264 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 18:59:11,438 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-13 18:59:11,626 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-13 18:59:11,811 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 18:59:11,978 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-13 18:59:12,164 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 18:59:12,349 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 18:59:12,559 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 18:59:12,754 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 18:59:12,939 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 18:59:13,122 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 18:59:13,315 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-13 18:59:13,553 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-13 18:59:13,807 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 18:59:14,000 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 18:59:14,202 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 18:59:14,418 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-13 18:59:14,619 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 18:59:14,854 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 18:59:15,186 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 18:59:15,536 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 18:59:16,087 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 18:59:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:16,457 INFO L93 Difference]: Finished difference Result 4672 states and 9594 transitions. [2021-07-13 18:59:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 18:59:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:16,463 INFO L225 Difference]: With dead ends: 4672 [2021-07-13 18:59:16,464 INFO L226 Difference]: Without dead ends: 4672 [2021-07-13 18:59:16,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 6249.9ms TimeCoverageRelationStatistics Valid=1518, Invalid=4334, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 18:59:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2021-07-13 18:59:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 3208. [2021-07-13 18:59:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3205 states have (on average 2.0505460218408738) internal successors, (6572), 3207 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 6572 transitions. [2021-07-13 18:59:16,504 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 6572 transitions. Word has length 85 [2021-07-13 18:59:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:16,505 INFO L482 AbstractCegarLoop]: Abstraction has 3208 states and 6572 transitions. [2021-07-13 18:59:16,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 6572 transitions. [2021-07-13 18:59:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:16,508 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:16,508 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:16,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-13 18:59:16,508 INFO L430 AbstractCegarLoop]: === Iteration 14 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash -134385517, now seen corresponding path program 11 times [2021-07-13 18:59:16,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:16,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758575568] [2021-07-13 18:59:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:17,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:17,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758575568] [2021-07-13 18:59:17,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758575568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:17,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:17,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:17,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993402466] [2021-07-13 18:59:17,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:17,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:17,152 INFO L87 Difference]: Start difference. First operand 3208 states and 6572 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:18,037 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 18:59:18,317 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-13 18:59:18,558 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-13 18:59:18,760 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-13 18:59:18,964 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-13 18:59:19,154 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 18:59:19,377 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 18:59:19,580 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-13 18:59:19,756 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-13 18:59:19,958 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-13 18:59:20,163 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-13 18:59:20,386 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-13 18:59:20,603 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-13 18:59:20,797 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 18:59:20,995 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-07-13 18:59:21,209 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 18:59:21,478 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 18:59:21,718 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-07-13 18:59:21,924 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 18:59:22,158 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2021-07-13 18:59:22,392 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 18:59:22,657 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-13 18:59:22,925 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-13 18:59:23,210 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2021-07-13 18:59:23,479 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-07-13 18:59:23,880 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 90 [2021-07-13 18:59:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:24,201 INFO L93 Difference]: Finished difference Result 4641 states and 9529 transitions. [2021-07-13 18:59:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 18:59:24,208 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:24,213 INFO L225 Difference]: With dead ends: 4641 [2021-07-13 18:59:24,214 INFO L226 Difference]: Without dead ends: 4641 [2021-07-13 18:59:24,214 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 6390.6ms TimeCoverageRelationStatistics Valid=1367, Invalid=3325, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 18:59:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-07-13 18:59:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 3325. [2021-07-13 18:59:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3322 states have (on average 2.0517760385310053) internal successors, (6816), 3324 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 6816 transitions. [2021-07-13 18:59:24,255 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 6816 transitions. Word has length 85 [2021-07-13 18:59:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:24,255 INFO L482 AbstractCegarLoop]: Abstraction has 3325 states and 6816 transitions. [2021-07-13 18:59:24,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 6816 transitions. [2021-07-13 18:59:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:24,258 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:24,258 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:24,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-13 18:59:24,258 INFO L430 AbstractCegarLoop]: === Iteration 15 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash -801204029, now seen corresponding path program 12 times [2021-07-13 18:59:24,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:24,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033045271] [2021-07-13 18:59:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:24,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:24,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033045271] [2021-07-13 18:59:24,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033045271] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:24,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:24,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:24,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208975709] [2021-07-13 18:59:24,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:24,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:24,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:24,883 INFO L87 Difference]: Start difference. First operand 3325 states and 6816 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:25,787 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 18:59:25,975 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 18:59:26,176 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-13 18:59:26,323 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 18:59:26,502 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:59:26,681 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-13 18:59:26,845 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 18:59:27,019 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-13 18:59:27,213 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 18:59:27,390 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-13 18:59:27,562 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-13 18:59:27,760 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 18:59:27,945 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-13 18:59:28,129 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-13 18:59:28,349 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 18:59:28,549 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 18:59:28,741 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 18:59:28,914 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-07-13 18:59:29,129 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-13 18:59:29,322 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 18:59:29,561 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 18:59:29,767 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 18:59:29,972 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-07-13 18:59:30,178 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2021-07-13 18:59:30,395 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-13 18:59:30,581 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 18:59:30,832 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 18:59:31,093 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-13 18:59:31,305 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-13 18:59:31,558 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 18:59:31,807 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 18:59:32,027 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 18:59:32,297 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 84 [2021-07-13 18:59:32,584 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-13 18:59:32,842 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2021-07-13 18:59:33,185 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-13 18:59:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:33,578 INFO L93 Difference]: Finished difference Result 4799 states and 9855 transitions. [2021-07-13 18:59:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 18:59:33,578 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:33,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:33,583 INFO L225 Difference]: With dead ends: 4799 [2021-07-13 18:59:33,583 INFO L226 Difference]: Without dead ends: 4799 [2021-07-13 18:59:33,584 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 7964.2ms TimeCoverageRelationStatistics Valid=1829, Invalid=4333, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 18:59:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-07-13 18:59:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3120. [2021-07-13 18:59:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3117 states have (on average 2.051331408405518) internal successors, (6394), 3119 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 6394 transitions. [2021-07-13 18:59:33,622 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 6394 transitions. Word has length 85 [2021-07-13 18:59:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:33,622 INFO L482 AbstractCegarLoop]: Abstraction has 3120 states and 6394 transitions. [2021-07-13 18:59:33,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 6394 transitions. [2021-07-13 18:59:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:33,625 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:33,625 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:33,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-13 18:59:33,625 INFO L430 AbstractCegarLoop]: === Iteration 16 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1414983825, now seen corresponding path program 13 times [2021-07-13 18:59:33,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:33,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788445350] [2021-07-13 18:59:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:34,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:34,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788445350] [2021-07-13 18:59:34,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788445350] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:34,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:34,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:34,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541297592] [2021-07-13 18:59:34,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:34,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:34,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:34,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:34,271 INFO L87 Difference]: Start difference. First operand 3120 states and 6394 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:35,155 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 18:59:35,342 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 18:59:35,505 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 18:59:35,706 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 18:59:35,853 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 18:59:36,018 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:59:36,194 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-13 18:59:36,365 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 18:59:36,549 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 18:59:36,742 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 18:59:36,930 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 18:59:37,104 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 18:59:37,289 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 18:59:37,488 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 18:59:37,680 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-13 18:59:37,919 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 18:59:38,116 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 18:59:38,312 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 18:59:38,488 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2021-07-13 18:59:38,691 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 18:59:38,886 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 18:59:39,129 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 18:59:39,333 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 18:59:39,546 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 18:59:39,745 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-13 18:59:39,965 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-13 18:59:40,152 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 18:59:40,428 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 18:59:40,687 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 18:59:40,896 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-13 18:59:41,135 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 18:59:41,391 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 18:59:41,630 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 18:59:41,893 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-13 18:59:42,179 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-13 18:59:42,443 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 18:59:42,789 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-13 18:59:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:43,157 INFO L93 Difference]: Finished difference Result 4940 states and 10154 transitions. [2021-07-13 18:59:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 18:59:43,158 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:43,166 INFO L225 Difference]: With dead ends: 4940 [2021-07-13 18:59:43,166 INFO L226 Difference]: Without dead ends: 4940 [2021-07-13 18:59:43,166 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 8154.3ms TimeCoverageRelationStatistics Valid=1873, Invalid=4447, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 18:59:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2021-07-13 18:59:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 3174. [2021-07-13 18:59:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3171 states have (on average 2.0523494165878273) internal successors, (6508), 3173 states have internal predecessors, (6508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 6508 transitions. [2021-07-13 18:59:43,218 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 6508 transitions. Word has length 85 [2021-07-13 18:59:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:43,218 INFO L482 AbstractCegarLoop]: Abstraction has 3174 states and 6508 transitions. [2021-07-13 18:59:43,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 6508 transitions. [2021-07-13 18:59:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:43,221 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:43,221 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:43,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-13 18:59:43,222 INFO L430 AbstractCegarLoop]: === Iteration 17 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:43,222 INFO L82 PathProgramCache]: Analyzing trace with hash -369079021, now seen corresponding path program 14 times [2021-07-13 18:59:43,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:43,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082556739] [2021-07-13 18:59:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:43,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:43,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082556739] [2021-07-13 18:59:43,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082556739] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:43,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:43,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:43,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59810323] [2021-07-13 18:59:43,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:43,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:43,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:43,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:43,816 INFO L87 Difference]: Start difference. First operand 3174 states and 6508 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:45,311 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 18:59:45,871 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 18:59:46,364 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 18:59:46,756 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-13 18:59:47,297 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-13 18:59:47,700 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 18:59:47,871 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 18:59:48,040 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 18:59:48,176 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-07-13 18:59:48,363 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 18:59:48,551 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-13 18:59:48,701 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-07-13 18:59:49,013 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-13 18:59:49,219 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 18:59:49,446 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 18:59:49,579 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-07-13 18:59:49,766 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 18:59:49,929 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 18:59:50,140 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 18:59:50,328 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-13 18:59:50,530 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 18:59:50,719 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-13 18:59:50,913 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 18:59:51,102 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 18:59:51,310 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 18:59:51,510 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-13 18:59:51,732 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-13 18:59:51,984 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 18:59:52,201 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-13 18:59:52,419 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 18:59:52,637 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2021-07-13 18:59:52,867 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-13 18:59:53,083 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-13 18:59:53,381 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-13 18:59:53,604 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-13 18:59:53,876 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 18:59:54,099 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-13 18:59:54,353 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-13 18:59:54,552 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-13 18:59:54,877 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-13 18:59:55,173 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-13 18:59:55,405 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2021-07-13 18:59:55,675 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-13 18:59:55,964 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 81 [2021-07-13 18:59:56,204 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-13 18:59:56,522 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-07-13 18:59:56,863 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2021-07-13 18:59:57,174 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2021-07-13 18:59:57,530 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2021-07-13 18:59:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:59:57,925 INFO L93 Difference]: Finished difference Result 5040 states and 10336 transitions. [2021-07-13 18:59:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-13 18:59:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 18:59:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:59:57,930 INFO L225 Difference]: With dead ends: 5040 [2021-07-13 18:59:57,930 INFO L226 Difference]: Without dead ends: 5040 [2021-07-13 18:59:57,931 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 12771.3ms TimeCoverageRelationStatistics Valid=3726, Invalid=9156, Unknown=0, NotChecked=0, Total=12882 [2021-07-13 18:59:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-07-13 18:59:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 3090. [2021-07-13 18:59:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3087 states have (on average 2.0518302559118884) internal successors, (6334), 3089 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 6334 transitions. [2021-07-13 18:59:57,970 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 6334 transitions. Word has length 85 [2021-07-13 18:59:57,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:59:57,970 INFO L482 AbstractCegarLoop]: Abstraction has 3090 states and 6334 transitions. [2021-07-13 18:59:57,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 6334 transitions. [2021-07-13 18:59:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 18:59:57,973 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:59:57,973 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:59:57,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-13 18:59:57,973 INFO L430 AbstractCegarLoop]: === Iteration 18 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:59:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:59:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -190120765, now seen corresponding path program 15 times [2021-07-13 18:59:57,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:59:57,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127718506] [2021-07-13 18:59:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:59:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:59:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:59:58,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:59:58,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127718506] [2021-07-13 18:59:58,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127718506] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:59:58,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:59:58,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 18:59:58,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742504700] [2021-07-13 18:59:58,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 18:59:58,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:59:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 18:59:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 18:59:58,495 INFO L87 Difference]: Start difference. First operand 3090 states and 6334 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:59:59,565 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 18:59:59,759 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 18:59:59,926 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:00:00,100 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:00:00,280 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:00:00,447 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:00:00,603 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:00:00,780 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:00:00,986 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:00:01,160 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:00:01,341 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:00:01,558 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:00:01,806 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-13 19:00:02,083 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:00:02,325 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:00:02,682 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:00:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:03,710 INFO L93 Difference]: Finished difference Result 4191 states and 8595 transitions. [2021-07-13 19:00:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:00:03,711 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:03,715 INFO L225 Difference]: With dead ends: 4191 [2021-07-13 19:00:03,715 INFO L226 Difference]: Without dead ends: 4191 [2021-07-13 19:00:03,720 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4591.8ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 19:00:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-07-13 19:00:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3139. [2021-07-13 19:00:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3136 states have (on average 2.0513392857142856) internal successors, (6433), 3138 states have internal predecessors, (6433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 6433 transitions. [2021-07-13 19:00:03,758 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 6433 transitions. Word has length 85 [2021-07-13 19:00:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:03,758 INFO L482 AbstractCegarLoop]: Abstraction has 3139 states and 6433 transitions. [2021-07-13 19:00:03,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 6433 transitions. [2021-07-13 19:00:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:03,761 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:03,761 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:03,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-13 19:00:03,761 INFO L430 AbstractCegarLoop]: === Iteration 19 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:03,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:03,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1302756877, now seen corresponding path program 16 times [2021-07-13 19:00:03,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:03,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394179006] [2021-07-13 19:00:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:04,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:04,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394179006] [2021-07-13 19:00:04,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394179006] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:04,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:04,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:04,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685315088] [2021-07-13 19:00:04,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:04,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:04,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:04,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:04,331 INFO L87 Difference]: Start difference. First operand 3139 states and 6433 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:05,513 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 19:00:05,743 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:00:05,917 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:00:06,113 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 19:00:06,292 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-13 19:00:06,490 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:00:06,659 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:00:06,826 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:00:07,019 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:00:07,239 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:00:07,431 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:00:07,625 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:00:07,828 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 19:00:08,023 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 19:00:08,272 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:00:08,495 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-13 19:00:08,734 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:00:08,949 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:00:09,264 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:00:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:10,219 INFO L93 Difference]: Finished difference Result 4309 states and 8844 transitions. [2021-07-13 19:00:10,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:00:10,219 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:10,224 INFO L225 Difference]: With dead ends: 4309 [2021-07-13 19:00:10,224 INFO L226 Difference]: Without dead ends: 4309 [2021-07-13 19:00:10,224 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5143.3ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:00:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2021-07-13 19:00:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3148. [2021-07-13 19:00:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3145 states have (on average 2.051510333863275) internal successors, (6452), 3147 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6452 transitions. [2021-07-13 19:00:10,264 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6452 transitions. Word has length 85 [2021-07-13 19:00:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:10,265 INFO L482 AbstractCegarLoop]: Abstraction has 3148 states and 6452 transitions. [2021-07-13 19:00:10,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6452 transitions. [2021-07-13 19:00:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:10,268 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:10,268 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:10,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-13 19:00:10,268 INFO L430 AbstractCegarLoop]: === Iteration 20 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:10,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1244081829, now seen corresponding path program 17 times [2021-07-13 19:00:10,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:10,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388648942] [2021-07-13 19:00:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:10,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:10,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388648942] [2021-07-13 19:00:10,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388648942] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:10,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:10,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:10,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43782315] [2021-07-13 19:00:10,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:10,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:10,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:10,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:10,805 INFO L87 Difference]: Start difference. First operand 3148 states and 6452 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:11,797 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-07-13 19:00:12,098 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-13 19:00:12,339 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-13 19:00:12,533 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 19:00:12,736 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:00:12,920 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-13 19:00:13,121 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-13 19:00:13,307 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:00:13,490 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-13 19:00:13,683 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:00:13,874 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 19:00:14,095 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 19:00:14,301 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:00:14,505 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 19:00:14,712 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:00:14,922 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:00:15,174 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:00:15,419 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:00:15,614 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-13 19:00:15,841 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 19:00:16,089 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:00:16,303 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:00:16,556 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:00:16,893 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 19:00:17,261 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:00:17,859 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:00:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:18,258 INFO L93 Difference]: Finished difference Result 4285 states and 8792 transitions. [2021-07-13 19:00:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:00:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:18,265 INFO L225 Difference]: With dead ends: 4285 [2021-07-13 19:00:18,265 INFO L226 Difference]: Without dead ends: 4285 [2021-07-13 19:00:18,265 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 6584.9ms TimeCoverageRelationStatistics Valid=1518, Invalid=4334, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 19:00:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2021-07-13 19:00:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3149. [2021-07-13 19:00:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 3146 states have (on average 2.0514939605848697) internal successors, (6454), 3148 states have internal predecessors, (6454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 6454 transitions. [2021-07-13 19:00:18,310 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 6454 transitions. Word has length 85 [2021-07-13 19:00:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:18,310 INFO L482 AbstractCegarLoop]: Abstraction has 3149 states and 6454 transitions. [2021-07-13 19:00:18,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 6454 transitions. [2021-07-13 19:00:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:18,313 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:18,314 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:18,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-13 19:00:18,314 INFO L430 AbstractCegarLoop]: === Iteration 21 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash -471955181, now seen corresponding path program 18 times [2021-07-13 19:00:18,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:18,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475989707] [2021-07-13 19:00:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:19,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:19,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475989707] [2021-07-13 19:00:19,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475989707] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:19,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:19,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:19,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047544105] [2021-07-13 19:00:19,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:19,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:19,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:19,010 INFO L87 Difference]: Start difference. First operand 3149 states and 6454 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:19,884 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-13 19:00:20,156 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-13 19:00:20,371 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-13 19:00:20,570 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-13 19:00:20,774 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-13 19:00:20,956 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-13 19:00:21,158 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:00:21,353 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 19:00:21,534 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:00:21,745 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 19:00:21,942 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-07-13 19:00:22,177 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:00:22,402 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:00:22,603 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:00:22,800 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-13 19:00:23,009 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-13 19:00:23,290 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-13 19:00:23,525 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:00:23,728 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-13 19:00:23,953 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-13 19:00:24,203 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-13 19:00:24,423 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-07-13 19:00:24,685 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2021-07-13 19:00:24,985 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2021-07-13 19:00:25,258 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:00:25,634 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:00:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:25,928 INFO L93 Difference]: Finished difference Result 4254 states and 8727 transitions. [2021-07-13 19:00:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:00:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:25,933 INFO L225 Difference]: With dead ends: 4254 [2021-07-13 19:00:25,933 INFO L226 Difference]: Without dead ends: 4254 [2021-07-13 19:00:25,934 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 6409.5ms TimeCoverageRelationStatistics Valid=1367, Invalid=3325, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 19:00:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-07-13 19:00:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 3254. [2021-07-13 19:00:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3251 states have (on average 2.052906797908336) internal successors, (6674), 3253 states have internal predecessors, (6674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 6674 transitions. [2021-07-13 19:00:25,969 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 6674 transitions. Word has length 85 [2021-07-13 19:00:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:25,970 INFO L482 AbstractCegarLoop]: Abstraction has 3254 states and 6674 transitions. [2021-07-13 19:00:25,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 6674 transitions. [2021-07-13 19:00:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:25,972 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:25,973 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:25,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-13 19:00:25,973 INFO L430 AbstractCegarLoop]: === Iteration 22 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1138773693, now seen corresponding path program 19 times [2021-07-13 19:00:25,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:25,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77031396] [2021-07-13 19:00:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:26,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:26,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77031396] [2021-07-13 19:00:26,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77031396] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:26,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:26,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:26,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154774018] [2021-07-13 19:00:26,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:26,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:26,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:26,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:26,603 INFO L87 Difference]: Start difference. First operand 3254 states and 6674 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:27,481 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-13 19:00:27,720 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-13 19:00:27,916 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:00:28,101 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:00:28,287 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-13 19:00:28,469 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-13 19:00:28,671 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-13 19:00:28,852 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2021-07-13 19:00:29,052 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:00:29,239 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:00:29,428 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-07-13 19:00:29,629 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:00:29,817 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:00:30,054 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:00:30,250 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:00:30,442 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-13 19:00:30,637 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:00:30,849 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-13 19:00:31,036 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:00:31,282 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:00:31,541 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 19:00:31,747 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-13 19:00:31,986 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:00:32,223 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 19:00:32,468 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:00:32,726 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:00:33,005 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:00:33,252 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:00:33,591 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-13 19:00:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:33,929 INFO L93 Difference]: Finished difference Result 4450 states and 9136 transitions. [2021-07-13 19:00:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:00:33,929 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:33,934 INFO L225 Difference]: With dead ends: 4450 [2021-07-13 19:00:33,934 INFO L226 Difference]: Without dead ends: 4450 [2021-07-13 19:00:33,935 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 6833.2ms TimeCoverageRelationStatistics Valid=1503, Invalid=3609, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 19:00:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2021-07-13 19:00:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 3104. [2021-07-13 19:00:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3101 states have (on average 2.0515962592712027) internal successors, (6362), 3103 states have internal predecessors, (6362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 6362 transitions. [2021-07-13 19:00:33,968 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 6362 transitions. Word has length 85 [2021-07-13 19:00:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:33,968 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 6362 transitions. [2021-07-13 19:00:33,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 6362 transitions. [2021-07-13 19:00:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:33,971 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:33,971 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:33,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-13 19:00:33,971 INFO L430 AbstractCegarLoop]: === Iteration 23 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1752553489, now seen corresponding path program 20 times [2021-07-13 19:00:33,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:33,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889934785] [2021-07-13 19:00:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:34,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:34,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:34,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889934785] [2021-07-13 19:00:34,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889934785] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:34,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:34,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:34,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465579422] [2021-07-13 19:00:34,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:34,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:34,670 INFO L87 Difference]: Start difference. First operand 3104 states and 6362 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:35,604 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-13 19:00:35,797 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-13 19:00:36,035 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:00:36,232 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:00:36,426 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-13 19:00:36,625 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:00:36,799 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-13 19:00:37,004 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-07-13 19:00:37,194 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2021-07-13 19:00:37,434 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-13 19:00:37,644 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:00:37,849 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-13 19:00:38,063 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:00:38,267 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:00:38,508 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:00:38,718 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:00:38,928 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:00:39,126 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:00:39,340 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-13 19:00:39,527 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:00:39,784 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:00:40,056 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 19:00:40,267 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-13 19:00:40,508 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:00:40,750 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 19:00:40,966 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:00:41,245 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:00:41,541 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:00:41,784 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:00:42,112 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-13 19:00:42,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:42,541 INFO L93 Difference]: Finished difference Result 4801 states and 9876 transitions. [2021-07-13 19:00:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:00:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:42,546 INFO L225 Difference]: With dead ends: 4801 [2021-07-13 19:00:42,546 INFO L226 Difference]: Without dead ends: 4801 [2021-07-13 19:00:42,546 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 7181.5ms TimeCoverageRelationStatistics Valid=1547, Invalid=3709, Unknown=0, NotChecked=0, Total=5256 [2021-07-13 19:00:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-07-13 19:00:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 3158. [2021-07-13 19:00:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3158 states, 3155 states have (on average 2.0526148969889064) internal successors, (6476), 3157 states have internal predecessors, (6476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:42,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 6476 transitions. [2021-07-13 19:00:42,582 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 6476 transitions. Word has length 85 [2021-07-13 19:00:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:42,582 INFO L482 AbstractCegarLoop]: Abstraction has 3158 states and 6476 transitions. [2021-07-13 19:00:42,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 6476 transitions. [2021-07-13 19:00:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:42,585 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:42,585 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:42,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-13 19:00:42,585 INFO L430 AbstractCegarLoop]: === Iteration 24 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash -706648685, now seen corresponding path program 21 times [2021-07-13 19:00:42,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:42,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758468996] [2021-07-13 19:00:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:43,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:43,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758468996] [2021-07-13 19:00:43,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758468996] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:43,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:43,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:00:43,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452926035] [2021-07-13 19:00:43,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:00:43,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:43,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:00:43,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:00:43,156 INFO L87 Difference]: Start difference. First operand 3158 states and 6476 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:44,594 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2021-07-13 19:00:45,304 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-13 19:00:46,052 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 19:00:46,599 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-07-13 19:00:46,751 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-13 19:00:47,157 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:00:47,345 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:00:47,488 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-07-13 19:00:47,702 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-13 19:00:47,878 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-07-13 19:00:48,017 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-07-13 19:00:48,198 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:00:48,402 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-13 19:00:48,610 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:00:48,763 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-07-13 19:00:48,987 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-13 19:00:49,172 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-07-13 19:00:49,373 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-07-13 19:00:49,548 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-13 19:00:49,745 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:00:49,926 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-13 19:00:50,147 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-07-13 19:00:50,324 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 19:00:50,549 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-07-13 19:00:50,754 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2021-07-13 19:00:50,994 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-13 19:00:51,191 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-13 19:00:51,429 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-13 19:00:51,648 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-13 19:00:51,864 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-13 19:00:52,094 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-13 19:00:52,327 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-07-13 19:00:52,546 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-13 19:00:52,856 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2021-07-13 19:00:53,098 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:00:53,322 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:00:53,564 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:00:53,784 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-07-13 19:00:54,028 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-13 19:00:54,227 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-13 19:00:54,561 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-13 19:00:54,886 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-07-13 19:00:55,123 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:00:55,420 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-13 19:00:55,732 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 19:00:55,973 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-13 19:00:56,277 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-07-13 19:00:56,621 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-13 19:00:56,946 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-13 19:00:57,282 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-13 19:00:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:00:57,589 INFO L93 Difference]: Finished difference Result 4901 states and 10058 transitions. [2021-07-13 19:00:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-13 19:00:57,589 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:00:57,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:00:57,594 INFO L225 Difference]: With dead ends: 4901 [2021-07-13 19:00:57,594 INFO L226 Difference]: Without dead ends: 4901 [2021-07-13 19:00:57,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 13254.6ms TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-07-13 19:00:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2021-07-13 19:00:57,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3092. [2021-07-13 19:00:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3089 states have (on average 2.051796697960505) internal successors, (6338), 3091 states have internal predecessors, (6338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 6338 transitions. [2021-07-13 19:00:57,628 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 6338 transitions. Word has length 85 [2021-07-13 19:00:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:00:57,628 INFO L482 AbstractCegarLoop]: Abstraction has 3092 states and 6338 transitions. [2021-07-13 19:00:57,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 6338 transitions. [2021-07-13 19:00:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:00:57,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:00:57,630 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:00:57,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-13 19:00:57,630 INFO L430 AbstractCegarLoop]: === Iteration 25 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:00:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:00:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1159334459, now seen corresponding path program 22 times [2021-07-13 19:00:57,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:00:57,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268257205] [2021-07-13 19:00:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:00:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:00:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:00:58,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:00:58,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268257205] [2021-07-13 19:00:58,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268257205] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:00:58,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:00:58,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:00:58,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603743207] [2021-07-13 19:00:58,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:00:58,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:00:58,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:00:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:00:58,083 INFO L87 Difference]: Start difference. First operand 3092 states and 6338 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:00:59,531 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2021-07-13 19:00:59,994 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-13 19:01:00,361 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2021-07-13 19:01:01,092 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2021-07-13 19:01:01,617 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-13 19:01:01,764 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-07-13 19:01:02,187 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-07-13 19:01:02,324 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:01:02,507 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-07-13 19:01:02,679 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:01:02,845 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-07-13 19:01:02,994 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2021-07-13 19:01:03,170 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-13 19:01:03,342 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:01:03,539 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:01:03,836 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:01:04,025 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-07-13 19:01:04,191 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2021-07-13 19:01:04,384 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-13 19:01:04,590 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:01:04,774 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:01:04,933 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-07-13 19:01:05,135 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-13 19:01:05,350 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-13 19:01:05,551 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-13 19:01:05,732 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-07-13 19:01:05,970 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:01:06,176 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2021-07-13 19:01:06,399 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2021-07-13 19:01:06,636 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:01:06,869 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:01:07,108 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-13 19:01:07,355 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:01:07,617 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:01:07,819 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2021-07-13 19:01:08,015 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-13 19:01:08,228 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:01:08,476 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:01:08,702 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:01:09,024 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 19:01:09,266 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:01:09,520 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:01:09,770 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-13 19:01:10,024 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:01:10,318 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-13 19:01:10,579 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-13 19:01:10,862 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:01:11,214 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-13 19:01:11,548 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:01:11,914 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-13 19:01:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:12,209 INFO L93 Difference]: Finished difference Result 4514 states and 9270 transitions. [2021-07-13 19:01:12,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-13 19:01:12,209 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:12,215 INFO L225 Difference]: With dead ends: 4514 [2021-07-13 19:01:12,216 INFO L226 Difference]: Without dead ends: 4514 [2021-07-13 19:01:12,216 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 12780.5ms TimeCoverageRelationStatistics Valid=3819, Invalid=9291, Unknown=0, NotChecked=0, Total=13110 [2021-07-13 19:01:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4514 states. [2021-07-13 19:01:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4514 to 3101. [2021-07-13 19:01:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3098 states have (on average 2.051969012265978) internal successors, (6357), 3100 states have internal predecessors, (6357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 6357 transitions. [2021-07-13 19:01:12,250 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 6357 transitions. Word has length 85 [2021-07-13 19:01:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:12,250 INFO L482 AbstractCegarLoop]: Abstraction has 3101 states and 6357 transitions. [2021-07-13 19:01:12,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:12,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 6357 transitions. [2021-07-13 19:01:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:12,252 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:12,252 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:12,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-13 19:01:12,253 INFO L430 AbstractCegarLoop]: === Iteration 26 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:12,253 INFO L82 PathProgramCache]: Analyzing trace with hash -273769133, now seen corresponding path program 23 times [2021-07-13 19:01:12,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:12,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391794170] [2021-07-13 19:01:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:12,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:12,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391794170] [2021-07-13 19:01:12,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391794170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:12,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:12,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:01:12,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27225914] [2021-07-13 19:01:12,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:01:12,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:12,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:01:12,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:01:12,713 INFO L87 Difference]: Start difference. First operand 3101 states and 6357 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:14,539 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-13 19:01:15,220 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-07-13 19:01:15,461 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:01:16,088 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-13 19:01:16,234 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-13 19:01:16,381 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-07-13 19:01:16,664 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-07-13 19:01:16,966 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-13 19:01:17,124 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-07-13 19:01:17,271 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-07-13 19:01:17,535 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:01:17,709 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-13 19:01:17,864 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:01:18,039 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-07-13 19:01:18,171 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-07-13 19:01:18,390 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-07-13 19:01:18,569 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-13 19:01:18,731 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2021-07-13 19:01:18,939 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2021-07-13 19:01:19,129 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:01:19,310 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 19:01:19,537 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:01:19,737 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:01:19,923 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-13 19:01:20,117 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-13 19:01:20,328 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:01:20,528 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2021-07-13 19:01:20,780 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-13 19:01:20,987 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2021-07-13 19:01:21,198 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-13 19:01:21,399 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-13 19:01:21,632 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-13 19:01:21,825 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-13 19:01:22,100 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-13 19:01:22,379 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:01:22,613 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-13 19:01:22,879 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:01:23,135 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:01:23,357 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:01:23,613 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-13 19:01:23,901 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:01:24,195 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:01:24,562 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-13 19:01:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:24,771 INFO L93 Difference]: Finished difference Result 3996 states and 8185 transitions. [2021-07-13 19:01:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-13 19:01:24,771 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:24,776 INFO L225 Difference]: With dead ends: 3996 [2021-07-13 19:01:24,776 INFO L226 Difference]: Without dead ends: 3996 [2021-07-13 19:01:24,776 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 11160.4ms TimeCoverageRelationStatistics Valid=3410, Invalid=8362, Unknown=0, NotChecked=0, Total=11772 [2021-07-13 19:01:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-07-13 19:01:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 2895. [2021-07-13 19:01:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2892 states have (on average 2.050829875518672) internal successors, (5931), 2894 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-13 19:01:24,805 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-13 19:01:24,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:24,805 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-13 19:01:24,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:24,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-13 19:01:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:24,807 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:24,807 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:24,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-13 19:01:24,807 INFO L430 AbstractCegarLoop]: === Iteration 27 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:24,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:24,808 INFO L82 PathProgramCache]: Analyzing trace with hash 889180321, now seen corresponding path program 24 times [2021-07-13 19:01:24,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:24,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20696455] [2021-07-13 19:01:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:25,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:25,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20696455] [2021-07-13 19:01:25,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20696455] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:25,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:25,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:01:25,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910392532] [2021-07-13 19:01:25,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:01:25,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:01:25,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:01:25,338 INFO L87 Difference]: Start difference. First operand 2895 states and 5931 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:26,478 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 19:01:26,707 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:01:26,892 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:01:27,073 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:01:27,262 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:01:27,432 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:01:27,597 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:01:27,773 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:01:27,970 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:01:28,157 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:01:28,330 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:01:28,521 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:01:28,741 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-13 19:01:28,996 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:01:29,195 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:01:29,498 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:01:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:30,509 INFO L93 Difference]: Finished difference Result 4063 states and 8337 transitions. [2021-07-13 19:01:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:01:30,510 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:30,515 INFO L225 Difference]: With dead ends: 4063 [2021-07-13 19:01:30,515 INFO L226 Difference]: Without dead ends: 4063 [2021-07-13 19:01:30,515 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4416.2ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 19:01:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2021-07-13 19:01:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 3006. [2021-07-13 19:01:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3003 states have (on average 2.0492840492840494) internal successors, (6154), 3005 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 6154 transitions. [2021-07-13 19:01:30,543 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 6154 transitions. Word has length 85 [2021-07-13 19:01:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:30,543 INFO L482 AbstractCegarLoop]: Abstraction has 3006 states and 6154 transitions. [2021-07-13 19:01:30,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 6154 transitions. [2021-07-13 19:01:30,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:30,546 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:30,546 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:30,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-13 19:01:30,546 INFO L430 AbstractCegarLoop]: === Iteration 28 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:30,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:30,546 INFO L82 PathProgramCache]: Analyzing trace with hash -223455791, now seen corresponding path program 25 times [2021-07-13 19:01:30,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:30,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834300072] [2021-07-13 19:01:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:31,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:31,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834300072] [2021-07-13 19:01:31,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834300072] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:31,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:31,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:01:31,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207884388] [2021-07-13 19:01:31,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:01:31,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:01:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:01:31,117 INFO L87 Difference]: Start difference. First operand 3006 states and 6154 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:32,166 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 19:01:32,372 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:01:32,541 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:01:32,722 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 19:01:32,883 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-13 19:01:33,067 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:01:33,239 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:01:33,406 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:01:33,593 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:01:33,790 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:01:33,966 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:01:34,141 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:01:34,310 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 19:01:34,497 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 19:01:34,728 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:01:34,945 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-13 19:01:35,167 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:01:35,369 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:01:35,667 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:01:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:36,594 INFO L93 Difference]: Finished difference Result 4181 states and 8586 transitions. [2021-07-13 19:01:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:01:36,594 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:36,599 INFO L225 Difference]: With dead ends: 4181 [2021-07-13 19:01:36,599 INFO L226 Difference]: Without dead ends: 4181 [2021-07-13 19:01:36,599 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4924.7ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:01:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2021-07-13 19:01:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 3015. [2021-07-13 19:01:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3012 states have (on average 2.049468791500664) internal successors, (6173), 3014 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 6173 transitions. [2021-07-13 19:01:36,628 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 6173 transitions. Word has length 85 [2021-07-13 19:01:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:36,628 INFO L482 AbstractCegarLoop]: Abstraction has 3015 states and 6173 transitions. [2021-07-13 19:01:36,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 6173 transitions. [2021-07-13 19:01:36,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:36,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:36,630 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:36,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-13 19:01:36,630 INFO L430 AbstractCegarLoop]: === Iteration 29 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash -164780743, now seen corresponding path program 26 times [2021-07-13 19:01:36,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:36,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474121124] [2021-07-13 19:01:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:37,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:37,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474121124] [2021-07-13 19:01:37,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474121124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:37,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:37,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:01:37,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479117685] [2021-07-13 19:01:37,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:01:37,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:37,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:01:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:01:37,173 INFO L87 Difference]: Start difference. First operand 3015 states and 6173 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:38,375 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-13 19:01:38,607 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-07-13 19:01:38,791 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-13 19:01:38,979 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-13 19:01:39,153 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:01:39,342 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-13 19:01:39,522 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-13 19:01:39,692 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-07-13 19:01:39,882 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:01:40,063 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-13 19:01:40,269 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 19:01:40,454 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:01:40,638 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:01:40,818 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:01:41,015 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-13 19:01:41,259 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-13 19:01:41,492 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:01:41,695 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:01:41,900 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:01:42,120 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-13 19:01:42,314 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:01:42,549 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:01:42,862 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 19:01:43,231 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:01:43,813 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:01:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:44,175 INFO L93 Difference]: Finished difference Result 4157 states and 8534 transitions. [2021-07-13 19:01:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:01:44,176 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:44,180 INFO L225 Difference]: With dead ends: 4157 [2021-07-13 19:01:44,180 INFO L226 Difference]: Without dead ends: 4157 [2021-07-13 19:01:44,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6280.9ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 19:01:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-07-13 19:01:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3016. [2021-07-13 19:01:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 3013 states have (on average 2.049452373050116) internal successors, (6175), 3015 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 6175 transitions. [2021-07-13 19:01:44,209 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 6175 transitions. Word has length 85 [2021-07-13 19:01:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:44,209 INFO L482 AbstractCegarLoop]: Abstraction has 3016 states and 6175 transitions. [2021-07-13 19:01:44,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 6175 transitions. [2021-07-13 19:01:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:44,211 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:44,211 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:44,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-13 19:01:44,212 INFO L430 AbstractCegarLoop]: === Iteration 30 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:44,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:44,212 INFO L82 PathProgramCache]: Analyzing trace with hash 607345905, now seen corresponding path program 27 times [2021-07-13 19:01:44,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:44,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890076451] [2021-07-13 19:01:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:44,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:44,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890076451] [2021-07-13 19:01:44,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890076451] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:44,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:44,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:01:44,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107393505] [2021-07-13 19:01:44,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:01:44,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:01:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:01:44,869 INFO L87 Difference]: Start difference. First operand 3016 states and 6175 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:45,973 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-13 19:01:46,188 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-13 19:01:46,380 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-13 19:01:46,590 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:01:46,775 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:01:46,974 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 19:01:47,166 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-13 19:01:47,347 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-13 19:01:47,548 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-13 19:01:47,738 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-13 19:01:47,960 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-13 19:01:48,166 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-13 19:01:48,366 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-13 19:01:48,572 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-07-13 19:01:48,782 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:01:49,051 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 19:01:49,313 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-07-13 19:01:49,521 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 19:01:49,752 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2021-07-13 19:01:50,001 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:01:50,237 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-13 19:01:50,499 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-13 19:01:50,784 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2021-07-13 19:01:51,057 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-07-13 19:01:51,434 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 90 [2021-07-13 19:01:51,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:01:51,740 INFO L93 Difference]: Finished difference Result 4126 states and 8469 transitions. [2021-07-13 19:01:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:01:51,740 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:01:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:01:51,745 INFO L225 Difference]: With dead ends: 4126 [2021-07-13 19:01:51,745 INFO L226 Difference]: Without dead ends: 4126 [2021-07-13 19:01:51,745 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 6313.8ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 19:01:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-07-13 19:01:51,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3133. [2021-07-13 19:01:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3130 states have (on average 2.0507987220447284) internal successors, (6419), 3132 states have internal predecessors, (6419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 6419 transitions. [2021-07-13 19:01:51,777 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 6419 transitions. Word has length 85 [2021-07-13 19:01:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:01:51,778 INFO L482 AbstractCegarLoop]: Abstraction has 3133 states and 6419 transitions. [2021-07-13 19:01:51,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 6419 transitions. [2021-07-13 19:01:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:01:51,780 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:01:51,780 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:01:51,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-13 19:01:51,780 INFO L430 AbstractCegarLoop]: === Iteration 31 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:01:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:01:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash -59472607, now seen corresponding path program 28 times [2021-07-13 19:01:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:01:51,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937429355] [2021-07-13 19:01:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:01:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:01:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:01:52,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:01:52,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937429355] [2021-07-13 19:01:52,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937429355] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:01:52,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:01:52,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:01:52,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071425602] [2021-07-13 19:01:52,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:01:52,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:01:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:01:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:01:52,426 INFO L87 Difference]: Start difference. First operand 3133 states and 6419 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:01:53,352 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 19:01:53,546 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 19:01:53,735 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-13 19:01:53,881 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:01:54,055 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 19:01:54,233 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-13 19:01:54,404 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 19:01:54,568 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-13 19:01:54,767 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:01:54,937 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-13 19:01:55,105 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-13 19:01:55,284 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 19:01:55,473 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:01:55,654 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-13 19:01:55,870 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 19:01:56,067 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 19:01:56,256 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 19:01:56,436 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-07-13 19:01:56,639 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-13 19:01:56,836 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 19:01:57,072 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 19:01:57,284 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 19:01:57,500 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-07-13 19:01:57,698 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2021-07-13 19:01:57,918 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-13 19:01:58,110 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-13 19:01:58,361 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 19:01:58,632 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-13 19:01:58,840 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-13 19:01:59,075 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 19:01:59,357 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 19:01:59,580 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 19:01:59,843 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 84 [2021-07-13 19:02:00,128 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-13 19:02:00,375 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2021-07-13 19:02:00,727 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-13 19:02:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:01,100 INFO L93 Difference]: Finished difference Result 4284 states and 8795 transitions. [2021-07-13 19:02:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-13 19:02:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:01,105 INFO L225 Difference]: With dead ends: 4284 [2021-07-13 19:02:01,105 INFO L226 Difference]: Without dead ends: 4284 [2021-07-13 19:02:01,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 7993.5ms TimeCoverageRelationStatistics Valid=1828, Invalid=4334, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:02:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2021-07-13 19:02:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3333. [2021-07-13 19:02:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3330 states have (on average 2.052252252252252) internal successors, (6834), 3332 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 6834 transitions. [2021-07-13 19:02:01,139 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 6834 transitions. Word has length 85 [2021-07-13 19:02:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:01,139 INFO L482 AbstractCegarLoop]: Abstraction has 3333 states and 6834 transitions. [2021-07-13 19:02:01,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:01,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 6834 transitions. [2021-07-13 19:02:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:01,142 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:01,142 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:01,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-13 19:02:01,142 INFO L430 AbstractCegarLoop]: === Iteration 32 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:01,142 INFO L82 PathProgramCache]: Analyzing trace with hash -673252403, now seen corresponding path program 29 times [2021-07-13 19:02:01,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:01,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534872097] [2021-07-13 19:02:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:01,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:01,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534872097] [2021-07-13 19:02:01,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534872097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:01,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:01,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:01,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633591549] [2021-07-13 19:02:01,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:01,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:01,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:01,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:01,809 INFO L87 Difference]: Start difference. First operand 3333 states and 6834 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:02,709 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 19:02:02,889 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 19:02:03,048 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 19:02:03,247 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 19:02:03,395 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:02:03,583 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 19:02:03,771 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-13 19:02:03,975 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 19:02:04,161 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:02:04,356 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:02:04,535 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:02:04,705 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:02:04,881 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 19:02:05,077 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 19:02:05,266 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-13 19:02:05,494 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:02:05,689 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 19:02:05,885 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 19:02:06,062 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-13 19:02:06,265 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 19:02:06,459 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 19:02:06,697 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:02:06,905 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 19:02:07,129 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 19:02:07,327 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-13 19:02:07,548 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-13 19:02:07,746 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:02:08,008 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 19:02:08,280 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:02:08,486 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-13 19:02:08,731 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:02:08,978 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 19:02:09,210 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 19:02:09,508 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-13 19:02:09,841 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-13 19:02:10,121 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-13 19:02:10,498 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-13 19:02:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:10,919 INFO L93 Difference]: Finished difference Result 4425 states and 9094 transitions. [2021-07-13 19:02:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-13 19:02:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:10,924 INFO L225 Difference]: With dead ends: 4425 [2021-07-13 19:02:10,924 INFO L226 Difference]: Without dead ends: 4425 [2021-07-13 19:02:10,925 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 8307.0ms TimeCoverageRelationStatistics Valid=1872, Invalid=4448, Unknown=0, NotChecked=0, Total=6320 [2021-07-13 19:02:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2021-07-13 19:02:10,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 3387. [2021-07-13 19:02:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3384 states have (on average 2.0531914893617023) internal successors, (6948), 3386 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 6948 transitions. [2021-07-13 19:02:10,977 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 6948 transitions. Word has length 85 [2021-07-13 19:02:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:10,977 INFO L482 AbstractCegarLoop]: Abstraction has 3387 states and 6948 transitions. [2021-07-13 19:02:10,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 6948 transitions. [2021-07-13 19:02:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:10,979 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:10,979 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:10,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-13 19:02:10,980 INFO L430 AbstractCegarLoop]: === Iteration 33 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash 372652401, now seen corresponding path program 30 times [2021-07-13 19:02:10,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:10,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871792782] [2021-07-13 19:02:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:11,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:11,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871792782] [2021-07-13 19:02:11,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871792782] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:11,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:11,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:11,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458211892] [2021-07-13 19:02:11,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:11,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:11,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:11,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:11,645 INFO L87 Difference]: Start difference. First operand 3387 states and 6948 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:12,486 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2021-07-13 19:02:12,654 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 19:02:12,846 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 19:02:13,026 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-13 19:02:13,200 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-13 19:02:13,405 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 19:02:13,585 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:02:13,779 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 19:02:13,978 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-13 19:02:14,176 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-13 19:02:14,360 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:02:14,536 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 19:02:14,745 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:02:14,938 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:02:15,131 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-13 19:02:15,351 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 19:02:15,560 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 19:02:15,766 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-13 19:02:16,016 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:02:16,234 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-13 19:02:16,452 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 19:02:16,650 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-13 19:02:16,887 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-13 19:02:17,105 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-13 19:02:17,385 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-13 19:02:17,615 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-13 19:02:17,845 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 19:02:18,074 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-13 19:02:18,318 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-13 19:02:18,532 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-13 19:02:18,820 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-13 19:02:19,101 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-13 19:02:19,315 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2021-07-13 19:02:19,565 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-13 19:02:19,811 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 81 [2021-07-13 19:02:20,033 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-13 19:02:20,301 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-07-13 19:02:20,620 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2021-07-13 19:02:20,894 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2021-07-13 19:02:21,227 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2021-07-13 19:02:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:21,591 INFO L93 Difference]: Finished difference Result 4233 states and 8680 transitions. [2021-07-13 19:02:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-13 19:02:21,591 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:21,595 INFO L225 Difference]: With dead ends: 4233 [2021-07-13 19:02:21,595 INFO L226 Difference]: Without dead ends: 4233 [2021-07-13 19:02:21,595 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 9115.4ms TimeCoverageRelationStatistics Valid=1975, Invalid=4667, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:02:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2021-07-13 19:02:21,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3375. [2021-07-13 19:02:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 3372 states have (on average 2.052787663107948) internal successors, (6922), 3374 states have internal predecessors, (6922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 6922 transitions. [2021-07-13 19:02:21,627 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 6922 transitions. Word has length 85 [2021-07-13 19:02:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:21,627 INFO L482 AbstractCegarLoop]: Abstraction has 3375 states and 6922 transitions. [2021-07-13 19:02:21,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:21,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 6922 transitions. [2021-07-13 19:02:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:21,630 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:21,630 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:21,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-13 19:02:21,630 INFO L430 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:21,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash 551610657, now seen corresponding path program 31 times [2021-07-13 19:02:21,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:21,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571456700] [2021-07-13 19:02:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:22,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:22,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571456700] [2021-07-13 19:02:22,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571456700] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:22,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:22,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:22,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158495374] [2021-07-13 19:02:22,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:22,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:22,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:22,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:22,150 INFO L87 Difference]: Start difference. First operand 3375 states and 6922 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:23,379 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:02:23,541 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:02:23,715 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:02:23,896 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:02:24,068 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:02:24,224 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:02:24,395 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:02:24,594 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:02:24,783 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:02:24,954 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:02:25,138 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:02:25,348 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-13 19:02:25,578 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:02:25,774 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:02:26,068 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:02:27,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:27,009 INFO L93 Difference]: Finished difference Result 4369 states and 8970 transitions. [2021-07-13 19:02:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:02:27,009 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:27,014 INFO L225 Difference]: With dead ends: 4369 [2021-07-13 19:02:27,014 INFO L226 Difference]: Without dead ends: 4369 [2021-07-13 19:02:27,014 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4395.5ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 19:02:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-07-13 19:02:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3424. [2021-07-13 19:02:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3421 states have (on average 2.0523238819058753) internal successors, (7021), 3423 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 7021 transitions. [2021-07-13 19:02:27,047 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 7021 transitions. Word has length 85 [2021-07-13 19:02:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:27,047 INFO L482 AbstractCegarLoop]: Abstraction has 3424 states and 7021 transitions. [2021-07-13 19:02:27,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 7021 transitions. [2021-07-13 19:02:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:27,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:27,049 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:27,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-13 19:02:27,050 INFO L430 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash -561025455, now seen corresponding path program 32 times [2021-07-13 19:02:27,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:27,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568099856] [2021-07-13 19:02:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:27,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:27,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568099856] [2021-07-13 19:02:27,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568099856] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:27,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:27,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:27,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681972048] [2021-07-13 19:02:27,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:27,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:27,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:27,570 INFO L87 Difference]: Start difference. First operand 3424 states and 7021 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:28,606 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 19:02:28,814 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:02:28,978 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:02:29,154 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 19:02:29,310 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-13 19:02:29,486 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:02:29,657 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:02:29,822 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:02:29,994 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:02:30,192 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:02:30,366 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:02:30,537 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:02:30,704 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 19:02:30,885 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 19:02:31,110 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:02:31,329 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-13 19:02:31,554 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:02:31,752 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:02:32,033 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:02:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:32,921 INFO L93 Difference]: Finished difference Result 4487 states and 9219 transitions. [2021-07-13 19:02:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:02:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:32,926 INFO L225 Difference]: With dead ends: 4487 [2021-07-13 19:02:32,926 INFO L226 Difference]: Without dead ends: 4487 [2021-07-13 19:02:32,926 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4829.3ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:02:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2021-07-13 19:02:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 3433. [2021-07-13 19:02:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3430 states have (on average 2.052478134110787) internal successors, (7040), 3432 states have internal predecessors, (7040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 7040 transitions. [2021-07-13 19:02:32,958 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 7040 transitions. Word has length 85 [2021-07-13 19:02:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:32,958 INFO L482 AbstractCegarLoop]: Abstraction has 3433 states and 7040 transitions. [2021-07-13 19:02:32,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 7040 transitions. [2021-07-13 19:02:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:32,961 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:32,961 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:32,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-13 19:02:32,961 INFO L430 AbstractCegarLoop]: === Iteration 36 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:32,961 INFO L82 PathProgramCache]: Analyzing trace with hash -502350407, now seen corresponding path program 33 times [2021-07-13 19:02:32,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:32,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090996695] [2021-07-13 19:02:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:33,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:33,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090996695] [2021-07-13 19:02:33,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090996695] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:33,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:33,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:33,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886096846] [2021-07-13 19:02:33,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:33,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:33,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:33,457 INFO L87 Difference]: Start difference. First operand 3433 states and 7040 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:34,595 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-13 19:02:34,822 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-07-13 19:02:35,007 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-13 19:02:35,195 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-13 19:02:35,365 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:02:35,567 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-13 19:02:35,748 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-13 19:02:35,914 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-07-13 19:02:36,106 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:02:36,295 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-13 19:02:36,500 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 19:02:36,687 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:02:36,881 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:02:37,084 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:02:37,282 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:02:37,532 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:02:37,763 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:02:37,960 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-13 19:02:38,173 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:02:38,390 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:02:38,596 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:02:38,829 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:02:39,133 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 19:02:39,485 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:02:40,062 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:02:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:40,421 INFO L93 Difference]: Finished difference Result 4463 states and 9167 transitions. [2021-07-13 19:02:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:02:40,421 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:40,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:40,426 INFO L225 Difference]: With dead ends: 4463 [2021-07-13 19:02:40,426 INFO L226 Difference]: Without dead ends: 4463 [2021-07-13 19:02:40,426 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6243.3ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 19:02:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2021-07-13 19:02:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3434. [2021-07-13 19:02:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3431 states have (on average 2.0524628388225006) internal successors, (7042), 3433 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 7042 transitions. [2021-07-13 19:02:40,458 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 7042 transitions. Word has length 85 [2021-07-13 19:02:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:40,458 INFO L482 AbstractCegarLoop]: Abstraction has 3434 states and 7042 transitions. [2021-07-13 19:02:40,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 7042 transitions. [2021-07-13 19:02:40,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:40,460 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:40,460 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:40,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-13 19:02:40,460 INFO L430 AbstractCegarLoop]: === Iteration 37 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 269776241, now seen corresponding path program 34 times [2021-07-13 19:02:40,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:40,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431638220] [2021-07-13 19:02:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:41,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:41,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431638220] [2021-07-13 19:02:41,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431638220] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:41,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:41,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:41,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647424626] [2021-07-13 19:02:41,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:41,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:41,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:41,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:41,124 INFO L87 Difference]: Start difference. First operand 3434 states and 7042 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:42,325 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-13 19:02:42,575 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-13 19:02:42,773 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-13 19:02:42,980 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:02:43,153 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2021-07-13 19:02:43,354 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:02:43,550 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-13 19:02:43,725 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-07-13 19:02:43,926 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-13 19:02:44,104 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 19:02:44,320 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 19:02:44,521 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 19:02:44,715 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-07-13 19:02:44,897 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-13 19:02:45,108 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-13 19:02:45,357 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:02:45,589 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-07-13 19:02:45,783 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:02:46,002 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:02:46,223 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-13 19:02:46,450 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:02:46,703 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-13 19:02:46,981 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 93 [2021-07-13 19:02:47,247 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2021-07-13 19:02:47,627 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2021-07-13 19:02:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:47,955 INFO L93 Difference]: Finished difference Result 4432 states and 9102 transitions. [2021-07-13 19:02:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:02:47,955 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:47,960 INFO L225 Difference]: With dead ends: 4432 [2021-07-13 19:02:47,960 INFO L226 Difference]: Without dead ends: 4432 [2021-07-13 19:02:47,960 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 6140.8ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 19:02:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-07-13 19:02:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3539. [2021-07-13 19:02:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3539 states, 3536 states have (on average 2.053733031674208) internal successors, (7262), 3538 states have internal predecessors, (7262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 7262 transitions. [2021-07-13 19:02:47,992 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 7262 transitions. Word has length 85 [2021-07-13 19:02:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:47,992 INFO L482 AbstractCegarLoop]: Abstraction has 3539 states and 7262 transitions. [2021-07-13 19:02:47,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 7262 transitions. [2021-07-13 19:02:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:47,995 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:47,995 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:47,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-13 19:02:47,995 INFO L430 AbstractCegarLoop]: === Iteration 38 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:47,995 INFO L82 PathProgramCache]: Analyzing trace with hash -397042271, now seen corresponding path program 35 times [2021-07-13 19:02:47,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:47,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135198078] [2021-07-13 19:02:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:48,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:48,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135198078] [2021-07-13 19:02:48,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135198078] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:48,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:48,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:48,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196152606] [2021-07-13 19:02:48,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:48,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:48,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:48,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:48,628 INFO L87 Difference]: Start difference. First operand 3539 states and 7262 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:49,512 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 19:02:49,769 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-13 19:02:49,964 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-13 19:02:50,142 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-13 19:02:50,336 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-13 19:02:50,511 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:02:50,706 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:02:50,880 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-13 19:02:51,082 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:02:51,267 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 19:02:51,458 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2021-07-13 19:02:51,654 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 19:02:51,845 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-13 19:02:52,071 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:02:52,268 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 19:02:52,465 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-13 19:02:52,669 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-13 19:02:52,889 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-07-13 19:02:53,081 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:02:53,317 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-13 19:02:53,563 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:02:53,766 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 19:02:54,000 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-13 19:02:54,234 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:02:54,446 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-13 19:02:54,697 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2021-07-13 19:02:54,971 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2021-07-13 19:02:55,219 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 19:02:55,536 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2021-07-13 19:02:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:02:55,899 INFO L93 Difference]: Finished difference Result 4628 states and 9511 transitions. [2021-07-13 19:02:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:02:55,899 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:02:55,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:02:55,904 INFO L225 Difference]: With dead ends: 4628 [2021-07-13 19:02:55,904 INFO L226 Difference]: Without dead ends: 4628 [2021-07-13 19:02:55,904 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 6675.5ms TimeCoverageRelationStatistics Valid=1502, Invalid=3610, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 19:02:55,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2021-07-13 19:02:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 3389. [2021-07-13 19:02:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 3386 states have (on average 2.052569403425871) internal successors, (6950), 3388 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 6950 transitions. [2021-07-13 19:02:55,940 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 6950 transitions. Word has length 85 [2021-07-13 19:02:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:02:55,940 INFO L482 AbstractCegarLoop]: Abstraction has 3389 states and 6950 transitions. [2021-07-13 19:02:55,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 6950 transitions. [2021-07-13 19:02:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:02:55,942 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:02:55,942 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:02:55,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-13 19:02:55,942 INFO L430 AbstractCegarLoop]: === Iteration 39 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:02:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:02:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1010822067, now seen corresponding path program 36 times [2021-07-13 19:02:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:02:55,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38934844] [2021-07-13 19:02:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:02:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:02:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:02:56,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:02:56,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38934844] [2021-07-13 19:02:56,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38934844] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:02:56,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:02:56,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:02:56,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675799882] [2021-07-13 19:02:56,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:02:56,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:02:56,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:02:56,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:02:56,575 INFO L87 Difference]: Start difference. First operand 3389 states and 6950 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:02:57,457 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-13 19:02:57,633 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 19:02:57,861 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 19:02:58,058 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-13 19:02:58,262 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:02:58,460 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:02:58,624 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-13 19:02:58,825 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 19:02:59,000 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-13 19:02:59,217 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:02:59,401 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-13 19:02:59,591 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-13 19:02:59,788 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 19:02:59,974 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-13 19:03:00,196 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:03:00,399 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-13 19:03:00,596 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 19:03:00,782 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-13 19:03:00,986 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-07-13 19:03:01,163 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:03:01,405 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-13 19:03:01,671 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:03:01,872 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-13 19:03:02,101 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-13 19:03:02,341 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:03:02,551 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-13 19:03:02,813 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2021-07-13 19:03:03,103 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2021-07-13 19:03:03,352 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-13 19:03:03,694 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2021-07-13 19:03:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:04,095 INFO L93 Difference]: Finished difference Result 4979 states and 10251 transitions. [2021-07-13 19:03:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:03:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:04,100 INFO L225 Difference]: With dead ends: 4979 [2021-07-13 19:03:04,100 INFO L226 Difference]: Without dead ends: 4979 [2021-07-13 19:03:04,100 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 6821.6ms TimeCoverageRelationStatistics Valid=1546, Invalid=3710, Unknown=0, NotChecked=0, Total=5256 [2021-07-13 19:03:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-07-13 19:03:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 3443. [2021-07-13 19:03:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 3440 states have (on average 2.0534883720930233) internal successors, (7064), 3442 states have internal predecessors, (7064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7064 transitions. [2021-07-13 19:03:04,136 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7064 transitions. Word has length 85 [2021-07-13 19:03:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:04,136 INFO L482 AbstractCegarLoop]: Abstraction has 3443 states and 7064 transitions. [2021-07-13 19:03:04,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7064 transitions. [2021-07-13 19:03:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:04,138 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:04,138 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:04,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-13 19:03:04,138 INFO L430 AbstractCegarLoop]: === Iteration 40 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash 35082737, now seen corresponding path program 37 times [2021-07-13 19:03:04,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:04,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321730447] [2021-07-13 19:03:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:04,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:04,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321730447] [2021-07-13 19:03:04,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321730447] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:04,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:04,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:03:04,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146741801] [2021-07-13 19:03:04,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:03:04,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:03:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:03:04,705 INFO L87 Difference]: Start difference. First operand 3443 states and 7064 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:05,966 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-13 19:03:06,267 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-13 19:03:06,430 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-07-13 19:03:06,585 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-13 19:03:06,726 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-13 19:03:06,892 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:03:07,067 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-13 19:03:07,233 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-13 19:03:07,400 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-07-13 19:03:07,578 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:03:07,739 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-13 19:03:07,918 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:03:08,087 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-13 19:03:08,284 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-13 19:03:08,458 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-13 19:03:08,626 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-13 19:03:08,804 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-07-13 19:03:09,007 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-13 19:03:09,201 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-13 19:03:09,412 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-13 19:03:09,634 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:03:09,840 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-13 19:03:10,021 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-13 19:03:10,197 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:03:10,400 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-13 19:03:10,611 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-13 19:03:10,807 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-13 19:03:11,071 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-13 19:03:11,280 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:03:11,488 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-07-13 19:03:11,712 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-13 19:03:11,915 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-13 19:03:12,136 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2021-07-13 19:03:12,333 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-13 19:03:12,626 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 83 [2021-07-13 19:03:12,911 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-13 19:03:13,123 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-13 19:03:13,379 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-13 19:03:13,659 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-13 19:03:13,888 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 83 [2021-07-13 19:03:14,189 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2021-07-13 19:03:14,500 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 88 [2021-07-13 19:03:14,804 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-13 19:03:15,116 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2021-07-13 19:03:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:15,484 INFO L93 Difference]: Finished difference Result 4947 states and 10165 transitions. [2021-07-13 19:03:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-13 19:03:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:15,489 INFO L225 Difference]: With dead ends: 4947 [2021-07-13 19:03:15,489 INFO L226 Difference]: Without dead ends: 4947 [2021-07-13 19:03:15,489 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 9828.3ms TimeCoverageRelationStatistics Valid=2455, Invalid=5735, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 19:03:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2021-07-13 19:03:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 3377. [2021-07-13 19:03:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3374 states have (on average 2.0527563722584468) internal successors, (6926), 3376 states have internal predecessors, (6926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 6926 transitions. [2021-07-13 19:03:15,522 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 6926 transitions. Word has length 85 [2021-07-13 19:03:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:15,522 INFO L482 AbstractCegarLoop]: Abstraction has 3377 states and 6926 transitions. [2021-07-13 19:03:15,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 6926 transitions. [2021-07-13 19:03:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:15,524 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:15,525 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:15,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-13 19:03:15,525 INFO L430 AbstractCegarLoop]: === Iteration 41 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1901065881, now seen corresponding path program 38 times [2021-07-13 19:03:15,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:15,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964440307] [2021-07-13 19:03:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:15,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:15,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964440307] [2021-07-13 19:03:15,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964440307] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:15,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:15,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:03:15,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319484302] [2021-07-13 19:03:15,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:03:15,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:03:15,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:03:15,970 INFO L87 Difference]: Start difference. First operand 3377 states and 6926 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:17,229 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2021-07-13 19:03:17,367 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-07-13 19:03:17,668 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-13 19:03:17,834 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-13 19:03:17,980 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2021-07-13 19:03:18,138 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-07-13 19:03:18,299 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-13 19:03:18,474 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-13 19:03:18,633 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-07-13 19:03:18,781 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:03:18,943 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:03:19,110 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-07-13 19:03:19,294 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-07-13 19:03:19,497 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-13 19:03:19,656 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-13 19:03:19,820 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-13 19:03:19,985 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-07-13 19:03:20,177 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-13 19:03:20,370 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:03:20,561 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-13 19:03:20,772 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:03:20,926 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 19:03:21,087 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 19:03:21,278 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-13 19:03:21,490 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:03:21,701 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:03:21,925 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-13 19:03:22,143 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:03:22,374 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:03:22,563 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-13 19:03:22,741 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:03:22,938 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:03:23,179 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:03:23,382 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:03:23,662 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 19:03:23,891 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:03:24,123 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:03:24,351 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-13 19:03:24,574 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:03:24,852 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-13 19:03:25,097 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-13 19:03:25,371 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:03:25,683 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-13 19:03:26,013 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:03:26,384 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-13 19:03:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:26,749 INFO L93 Difference]: Finished difference Result 4560 states and 9377 transitions. [2021-07-13 19:03:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-13 19:03:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:26,754 INFO L225 Difference]: With dead ends: 4560 [2021-07-13 19:03:26,754 INFO L226 Difference]: Without dead ends: 4560 [2021-07-13 19:03:26,754 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 9665.4ms TimeCoverageRelationStatistics Valid=2483, Invalid=5707, Unknown=0, NotChecked=0, Total=8190 [2021-07-13 19:03:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2021-07-13 19:03:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 3386. [2021-07-13 19:03:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3383 states have (on average 2.05291161690807) internal successors, (6945), 3385 states have internal predecessors, (6945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6945 transitions. [2021-07-13 19:03:26,786 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6945 transitions. Word has length 85 [2021-07-13 19:03:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:26,786 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 6945 transitions. [2021-07-13 19:03:26,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6945 transitions. [2021-07-13 19:03:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:26,788 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:26,788 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:26,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-13 19:03:26,788 INFO L430 AbstractCegarLoop]: === Iteration 42 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash 467962289, now seen corresponding path program 39 times [2021-07-13 19:03:26,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:26,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128819146] [2021-07-13 19:03:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:27,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:27,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128819146] [2021-07-13 19:03:27,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128819146] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:27,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:27,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:03:27,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549472427] [2021-07-13 19:03:27,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:03:27,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:27,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:03:27,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:03:27,257 INFO L87 Difference]: Start difference. First operand 3386 states and 6945 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:29,772 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:03:30,252 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-13 19:03:30,752 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:03:31,297 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-13 19:03:31,690 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-13 19:03:31,846 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-13 19:03:32,003 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-13 19:03:32,320 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:03:32,480 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:03:32,626 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-13 19:03:32,948 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:03:33,084 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-07-13 19:03:33,257 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:03:33,458 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-13 19:03:33,596 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-13 19:03:33,799 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-07-13 19:03:33,977 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-13 19:03:34,194 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:03:34,370 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-13 19:03:34,557 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2021-07-13 19:03:34,734 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:03:34,908 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-07-13 19:03:35,069 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-13 19:03:35,254 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:03:35,445 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-13 19:03:35,664 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-13 19:03:35,876 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-13 19:03:36,092 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 19:03:36,313 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2021-07-13 19:03:36,508 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2021-07-13 19:03:36,720 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:03:36,924 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-07-13 19:03:37,233 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-13 19:03:37,442 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-07-13 19:03:37,681 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-13 19:03:37,882 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-13 19:03:38,111 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-13 19:03:38,301 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-07-13 19:03:38,608 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-13 19:03:38,892 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:03:39,117 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:03:39,369 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-13 19:03:39,648 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:03:39,892 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2021-07-13 19:03:40,174 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2021-07-13 19:03:40,514 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:03:40,810 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2021-07-13 19:03:41,174 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-13 19:03:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:41,409 INFO L93 Difference]: Finished difference Result 4423 states and 9067 transitions. [2021-07-13 19:03:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-07-13 19:03:41,410 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:41,414 INFO L225 Difference]: With dead ends: 4423 [2021-07-13 19:03:41,414 INFO L226 Difference]: Without dead ends: 4423 [2021-07-13 19:03:41,415 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 12840.8ms TimeCoverageRelationStatistics Valid=4205, Invalid=10315, Unknown=0, NotChecked=0, Total=14520 [2021-07-13 19:03:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2021-07-13 19:03:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 2895. [2021-07-13 19:03:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2892 states have (on average 2.050829875518672) internal successors, (5931), 2894 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-13 19:03:41,443 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-13 19:03:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:41,443 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-13 19:03:41,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-13 19:03:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:41,445 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:41,445 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:41,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-13 19:03:41,445 INFO L430 AbstractCegarLoop]: === Iteration 43 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1994512579, now seen corresponding path program 40 times [2021-07-13 19:03:41,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:41,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689066168] [2021-07-13 19:03:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:41,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:41,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689066168] [2021-07-13 19:03:41,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689066168] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:41,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:41,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:03:41,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678902372] [2021-07-13 19:03:41,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:03:41,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:03:41,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:03:41,969 INFO L87 Difference]: Start difference. First operand 2895 states and 5931 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:43,216 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:03:43,381 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:03:43,557 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:03:43,761 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-13 19:03:43,924 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:03:44,099 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:03:44,270 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:03:44,467 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:03:44,642 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:03:44,813 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:03:44,999 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:03:45,213 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-13 19:03:45,446 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:03:45,643 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:03:45,929 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:03:46,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:46,874 INFO L93 Difference]: Finished difference Result 3673 states and 7529 transitions. [2021-07-13 19:03:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:03:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:46,878 INFO L225 Difference]: With dead ends: 3673 [2021-07-13 19:03:46,878 INFO L226 Difference]: Without dead ends: 3673 [2021-07-13 19:03:46,878 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4409.4ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-13 19:03:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-07-13 19:03:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 2944. [2021-07-13 19:03:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2941 states have (on average 2.050323019381163) internal successors, (6030), 2943 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 6030 transitions. [2021-07-13 19:03:46,904 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 6030 transitions. Word has length 85 [2021-07-13 19:03:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:46,904 INFO L482 AbstractCegarLoop]: Abstraction has 2944 states and 6030 transitions. [2021-07-13 19:03:46,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 6030 transitions. [2021-07-13 19:03:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:46,906 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:46,906 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:46,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-13 19:03:46,906 INFO L430 AbstractCegarLoop]: === Iteration 44 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 881876467, now seen corresponding path program 41 times [2021-07-13 19:03:46,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:46,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091455381] [2021-07-13 19:03:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:47,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:47,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091455381] [2021-07-13 19:03:47,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091455381] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:47,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:47,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:03:47,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142941976] [2021-07-13 19:03:47,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:03:47,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:03:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:03:47,412 INFO L87 Difference]: Start difference. First operand 2944 states and 6030 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:48,459 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-13 19:03:48,660 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-13 19:03:48,828 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:03:49,015 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-13 19:03:49,170 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-13 19:03:49,349 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:03:49,523 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:03:49,680 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-13 19:03:49,852 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:03:50,061 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-13 19:03:50,243 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:03:50,423 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-13 19:03:50,601 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 19:03:50,789 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 19:03:51,011 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:03:51,231 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-13 19:03:51,463 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-13 19:03:51,661 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-13 19:03:51,949 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-13 19:03:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:03:52,904 INFO L93 Difference]: Finished difference Result 3791 states and 7778 transitions. [2021-07-13 19:03:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-13 19:03:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:03:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:03:52,908 INFO L225 Difference]: With dead ends: 3791 [2021-07-13 19:03:52,908 INFO L226 Difference]: Without dead ends: 3791 [2021-07-13 19:03:52,909 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4864.9ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-13 19:03:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-07-13 19:03:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 2953. [2021-07-13 19:03:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2953 states, 2950 states have (on average 2.0505084745762714) internal successors, (6049), 2952 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 6049 transitions. [2021-07-13 19:03:52,940 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 6049 transitions. Word has length 85 [2021-07-13 19:03:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:03:52,940 INFO L482 AbstractCegarLoop]: Abstraction has 2953 states and 6049 transitions. [2021-07-13 19:03:52,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 6049 transitions. [2021-07-13 19:03:52,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:03:52,942 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:03:52,942 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:03:52,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-13 19:03:52,943 INFO L430 AbstractCegarLoop]: === Iteration 45 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:03:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:03:52,943 INFO L82 PathProgramCache]: Analyzing trace with hash 940551515, now seen corresponding path program 42 times [2021-07-13 19:03:52,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:03:52,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140027291] [2021-07-13 19:03:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:03:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:03:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:03:53,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:03:53,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140027291] [2021-07-13 19:03:53,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140027291] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:03:53,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:03:53,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:03:53,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145145888] [2021-07-13 19:03:53,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:03:53,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:03:53,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:03:53,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:03:53,493 INFO L87 Difference]: Start difference. First operand 2953 states and 6049 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:03:54,643 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-13 19:03:54,864 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-13 19:03:55,040 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-13 19:03:55,237 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:03:55,407 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-13 19:03:55,600 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-13 19:03:55,777 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:03:55,940 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-13 19:03:56,125 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:03:56,304 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-13 19:03:56,514 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-13 19:03:56,705 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:03:56,887 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-13 19:03:57,070 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:03:57,271 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:03:57,509 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:03:57,738 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:03:57,935 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-13 19:03:58,138 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 19:03:58,355 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:03:58,560 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-13 19:03:58,791 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-13 19:03:59,092 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-13 19:03:59,462 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:04:00,024 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:04:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:00,377 INFO L93 Difference]: Finished difference Result 3767 states and 7726 transitions. [2021-07-13 19:04:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-13 19:04:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:00,382 INFO L225 Difference]: With dead ends: 3767 [2021-07-13 19:04:00,382 INFO L226 Difference]: Without dead ends: 3767 [2021-07-13 19:04:00,382 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6255.2ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-13 19:04:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-07-13 19:04:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2954. [2021-07-13 19:04:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2951 states have (on average 2.050491358861403) internal successors, (6051), 2953 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6051 transitions. [2021-07-13 19:04:00,408 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6051 transitions. Word has length 85 [2021-07-13 19:04:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:00,408 INFO L482 AbstractCegarLoop]: Abstraction has 2954 states and 6051 transitions. [2021-07-13 19:04:00,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6051 transitions. [2021-07-13 19:04:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:00,410 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:00,410 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:00,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-13 19:04:00,410 INFO L430 AbstractCegarLoop]: === Iteration 46 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1712678163, now seen corresponding path program 43 times [2021-07-13 19:04:00,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:00,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62712206] [2021-07-13 19:04:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:01,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:01,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62712206] [2021-07-13 19:04:01,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62712206] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:01,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:01,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:04:01,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613959051] [2021-07-13 19:04:01,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:04:01,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:01,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:04:01,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:04:01,052 INFO L87 Difference]: Start difference. First operand 2954 states and 6051 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:02,145 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-13 19:04:02,353 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-13 19:04:02,534 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-13 19:04:02,725 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-13 19:04:02,903 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-13 19:04:03,101 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:04:03,287 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-13 19:04:03,469 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:04:03,664 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-13 19:04:03,838 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:04:04,045 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-13 19:04:04,240 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:04:04,430 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-13 19:04:04,616 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-13 19:04:04,818 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-13 19:04:05,054 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-13 19:04:05,280 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:04:05,478 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-13 19:04:05,707 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-13 19:04:05,924 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-13 19:04:06,142 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-07-13 19:04:06,393 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2021-07-13 19:04:06,663 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2021-07-13 19:04:06,941 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:04:07,331 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:04:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:07,639 INFO L93 Difference]: Finished difference Result 3736 states and 7661 transitions. [2021-07-13 19:04:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-13 19:04:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:07,643 INFO L225 Difference]: With dead ends: 3736 [2021-07-13 19:04:07,643 INFO L226 Difference]: Without dead ends: 3736 [2021-07-13 19:04:07,644 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 6069.6ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-13 19:04:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-07-13 19:04:07,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3059. [2021-07-13 19:04:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3059 states, 3056 states have (on average 2.0520287958115184) internal successors, (6271), 3058 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 6271 transitions. [2021-07-13 19:04:07,670 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 6271 transitions. Word has length 85 [2021-07-13 19:04:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:07,670 INFO L482 AbstractCegarLoop]: Abstraction has 3059 states and 6271 transitions. [2021-07-13 19:04:07,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 6271 transitions. [2021-07-13 19:04:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:07,672 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:07,672 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:07,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-13 19:04:07,672 INFO L430 AbstractCegarLoop]: === Iteration 47 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1045859651, now seen corresponding path program 44 times [2021-07-13 19:04:07,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:07,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784537983] [2021-07-13 19:04:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:08,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:08,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784537983] [2021-07-13 19:04:08,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784537983] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:08,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:08,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:04:08,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706250043] [2021-07-13 19:04:08,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:04:08,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:08,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:04:08,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:04:08,344 INFO L87 Difference]: Start difference. First operand 3059 states and 6271 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:09,451 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-13 19:04:09,652 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:04:09,825 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:04:10,004 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-13 19:04:10,165 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-13 19:04:10,356 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-13 19:04:10,528 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-07-13 19:04:10,724 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:04:10,909 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:04:11,085 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-07-13 19:04:11,279 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:04:11,464 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:04:11,679 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:04:11,871 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:04:12,061 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-13 19:04:12,250 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:04:12,456 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-13 19:04:12,632 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:04:12,862 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:04:13,101 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 19:04:13,307 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-13 19:04:13,535 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:04:13,767 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 19:04:13,977 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:04:14,247 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:04:14,561 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:04:14,824 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:04:15,182 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-13 19:04:15,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:15,597 INFO L93 Difference]: Finished difference Result 3932 states and 8070 transitions. [2021-07-13 19:04:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:04:15,597 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:15,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:15,602 INFO L225 Difference]: With dead ends: 3932 [2021-07-13 19:04:15,602 INFO L226 Difference]: Without dead ends: 3932 [2021-07-13 19:04:15,602 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 6703.3ms TimeCoverageRelationStatistics Valid=1502, Invalid=3610, Unknown=0, NotChecked=0, Total=5112 [2021-07-13 19:04:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-07-13 19:04:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3249. [2021-07-13 19:04:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3246 states have (on average 2.053604436229205) internal successors, (6666), 3248 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 6666 transitions. [2021-07-13 19:04:15,631 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 6666 transitions. Word has length 85 [2021-07-13 19:04:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:15,631 INFO L482 AbstractCegarLoop]: Abstraction has 3249 states and 6666 transitions. [2021-07-13 19:04:15,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 6666 transitions. [2021-07-13 19:04:15,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:15,633 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:15,633 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:15,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-13 19:04:15,633 INFO L430 AbstractCegarLoop]: === Iteration 48 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:15,634 INFO L82 PathProgramCache]: Analyzing trace with hash 432079855, now seen corresponding path program 45 times [2021-07-13 19:04:15,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:15,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113998840] [2021-07-13 19:04:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:16,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:16,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113998840] [2021-07-13 19:04:16,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113998840] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:16,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:16,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:04:16,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082784604] [2021-07-13 19:04:16,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:04:16,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:04:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:04:16,312 INFO L87 Difference]: Start difference. First operand 3249 states and 6666 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:17,322 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-13 19:04:17,526 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-13 19:04:17,780 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:04:18,004 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-13 19:04:18,210 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-13 19:04:18,425 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:04:18,607 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-13 19:04:18,853 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-07-13 19:04:19,055 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-07-13 19:04:19,291 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-13 19:04:19,507 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:04:19,722 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-13 19:04:19,939 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:04:20,143 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:04:20,399 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:04:20,622 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:04:20,845 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:04:21,055 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:04:21,294 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-13 19:04:21,494 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-13 19:04:21,772 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:04:22,057 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-13 19:04:22,283 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-13 19:04:22,542 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:04:22,808 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-13 19:04:23,080 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-13 19:04:23,379 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:04:23,691 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:04:23,962 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:04:24,330 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-13 19:04:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:24,810 INFO L93 Difference]: Finished difference Result 4283 states and 8810 transitions. [2021-07-13 19:04:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:04:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:24,814 INFO L225 Difference]: With dead ends: 4283 [2021-07-13 19:04:24,814 INFO L226 Difference]: Without dead ends: 4283 [2021-07-13 19:04:24,815 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 7609.1ms TimeCoverageRelationStatistics Valid=1546, Invalid=3710, Unknown=0, NotChecked=0, Total=5256 [2021-07-13 19:04:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2021-07-13 19:04:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 3303. [2021-07-13 19:04:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3300 states have (on average 2.0545454545454547) internal successors, (6780), 3302 states have internal predecessors, (6780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 6780 transitions. [2021-07-13 19:04:24,845 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 6780 transitions. Word has length 85 [2021-07-13 19:04:24,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:24,845 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 6780 transitions. [2021-07-13 19:04:24,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 6780 transitions. [2021-07-13 19:04:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:24,847 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:24,847 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:24,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-13 19:04:24,848 INFO L430 AbstractCegarLoop]: === Iteration 49 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:24,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1477984659, now seen corresponding path program 46 times [2021-07-13 19:04:24,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:24,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673110909] [2021-07-13 19:04:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:25,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:25,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673110909] [2021-07-13 19:04:25,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673110909] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:25,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:25,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:04:25,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569198337] [2021-07-13 19:04:25,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:04:25,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:04:25,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:04:25,438 INFO L87 Difference]: Start difference. First operand 3303 states and 6780 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:26,284 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-13 19:04:26,453 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-13 19:04:26,627 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-13 19:04:26,787 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-13 19:04:26,978 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-13 19:04:27,163 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-13 19:04:27,319 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-07-13 19:04:27,508 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-13 19:04:27,674 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-13 19:04:27,874 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-07-13 19:04:28,047 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2021-07-13 19:04:28,250 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-13 19:04:28,447 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-13 19:04:28,637 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-13 19:04:28,846 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-07-13 19:04:29,031 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-13 19:04:29,258 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2021-07-13 19:04:29,453 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:04:29,655 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-13 19:04:29,843 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-07-13 19:04:30,050 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-13 19:04:30,231 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-13 19:04:30,465 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-13 19:04:30,701 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-07-13 19:04:30,912 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:04:31,134 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-13 19:04:31,369 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-13 19:04:31,588 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-13 19:04:31,842 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-07-13 19:04:32,128 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-13 19:04:32,374 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-13 19:04:32,694 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-13 19:04:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:33,059 INFO L93 Difference]: Finished difference Result 4091 states and 8396 transitions. [2021-07-13 19:04:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 19:04:33,059 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:33,064 INFO L225 Difference]: With dead ends: 4091 [2021-07-13 19:04:33,064 INFO L226 Difference]: Without dead ends: 4091 [2021-07-13 19:04:33,064 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 7046.3ms TimeCoverageRelationStatistics Valid=1640, Invalid=3910, Unknown=0, NotChecked=0, Total=5550 [2021-07-13 19:04:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2021-07-13 19:04:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3301. [2021-07-13 19:04:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3301 states, 3298 states have (on average 2.0539721043056396) internal successors, (6774), 3300 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 6774 transitions. [2021-07-13 19:04:33,093 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 6774 transitions. Word has length 85 [2021-07-13 19:04:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:33,094 INFO L482 AbstractCegarLoop]: Abstraction has 3301 states and 6774 transitions. [2021-07-13 19:04:33,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 6774 transitions. [2021-07-13 19:04:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:33,096 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:33,096 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:33,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-13 19:04:33,096 INFO L430 AbstractCegarLoop]: === Iteration 50 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash -950999493, now seen corresponding path program 47 times [2021-07-13 19:04:33,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:33,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405491950] [2021-07-13 19:04:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:33,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:33,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405491950] [2021-07-13 19:04:33,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405491950] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:33,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:33,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:04:33,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302709751] [2021-07-13 19:04:33,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:04:33,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:04:33,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:04:33,558 INFO L87 Difference]: Start difference. First operand 3301 states and 6774 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:34,691 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-13 19:04:34,827 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2021-07-13 19:04:35,011 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2021-07-13 19:04:35,167 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-13 19:04:35,360 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-07-13 19:04:35,532 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-13 19:04:35,692 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:04:35,849 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:04:36,036 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-07-13 19:04:36,228 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-13 19:04:36,411 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:04:36,573 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:04:36,761 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-13 19:04:36,946 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-13 19:04:37,120 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-13 19:04:37,337 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:04:37,498 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2021-07-13 19:04:37,677 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2021-07-13 19:04:37,884 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-13 19:04:38,096 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:04:38,296 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-13 19:04:38,508 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-13 19:04:38,730 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-13 19:04:38,911 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2021-07-13 19:04:39,085 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-13 19:04:39,273 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:04:39,494 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-13 19:04:39,717 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-13 19:04:39,991 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-13 19:04:40,211 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:04:40,437 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-13 19:04:40,650 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-13 19:04:40,860 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-13 19:04:41,129 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-13 19:04:41,370 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-13 19:04:41,628 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-13 19:04:41,918 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-13 19:04:42,231 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-13 19:04:42,583 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-13 19:04:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:42,930 INFO L93 Difference]: Finished difference Result 4416 states and 9089 transitions. [2021-07-13 19:04:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-13 19:04:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:42,935 INFO L225 Difference]: With dead ends: 4416 [2021-07-13 19:04:42,935 INFO L226 Difference]: Without dead ends: 4416 [2021-07-13 19:04:42,936 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 8391.7ms TimeCoverageRelationStatistics Valid=2068, Invalid=4738, Unknown=0, NotChecked=0, Total=6806 [2021-07-13 19:04:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4416 states. [2021-07-13 19:04:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4416 to 3310. [2021-07-13 19:04:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3307 states have (on average 2.0541276081040216) internal successors, (6793), 3309 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 6793 transitions. [2021-07-13 19:04:42,967 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 6793 transitions. Word has length 85 [2021-07-13 19:04:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:42,967 INFO L482 AbstractCegarLoop]: Abstraction has 3310 states and 6793 transitions. [2021-07-13 19:04:42,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 6793 transitions. [2021-07-13 19:04:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:42,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:42,970 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:42,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-13 19:04:42,970 INFO L430 AbstractCegarLoop]: === Iteration 51 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1910864211, now seen corresponding path program 48 times [2021-07-13 19:04:42,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:42,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168138896] [2021-07-13 19:04:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:43,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:43,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168138896] [2021-07-13 19:04:43,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168138896] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:43,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:43,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:04:43,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458036627] [2021-07-13 19:04:43,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:04:43,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:43,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:04:43,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:04:43,387 INFO L87 Difference]: Start difference. First operand 3310 states and 6793 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:45,971 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-13 19:04:46,456 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-07-13 19:04:46,829 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:04:47,365 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-13 19:04:47,506 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-13 19:04:47,892 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-13 19:04:48,055 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-13 19:04:48,376 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:04:48,538 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-13 19:04:48,687 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-07-13 19:04:48,865 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-13 19:04:49,001 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:04:49,167 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-07-13 19:04:49,344 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-13 19:04:49,656 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-13 19:04:49,817 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:04:50,018 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-07-13 19:04:50,184 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-13 19:04:50,364 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-07-13 19:04:50,541 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-13 19:04:50,747 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-07-13 19:04:50,905 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-13 19:04:51,103 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2021-07-13 19:04:51,296 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:04:51,514 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-13 19:04:51,692 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-13 19:04:51,920 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:04:52,120 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:04:52,329 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2021-07-13 19:04:52,538 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-13 19:04:52,750 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:04:52,947 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2021-07-13 19:04:53,215 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-13 19:04:53,427 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2021-07-13 19:04:53,627 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-13 19:04:53,854 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-13 19:04:54,062 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-13 19:04:54,295 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-13 19:04:54,486 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-13 19:04:54,778 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-13 19:04:55,064 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:04:55,289 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-13 19:04:55,533 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:04:55,805 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:04:56,032 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:04:56,333 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-13 19:04:56,684 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:04:56,982 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:04:57,358 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-13 19:04:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:04:57,642 INFO L93 Difference]: Finished difference Result 4279 states and 8779 transitions. [2021-07-13 19:04:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-13 19:04:57,642 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:04:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:04:57,647 INFO L225 Difference]: With dead ends: 4279 [2021-07-13 19:04:57,647 INFO L226 Difference]: Without dead ends: 4279 [2021-07-13 19:04:57,647 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2435 ImplicationChecksByTransitivity, 13014.7ms TimeCoverageRelationStatistics Valid=4273, Invalid=10489, Unknown=0, NotChecked=0, Total=14762 [2021-07-13 19:04:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-07-13 19:04:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 2895. [2021-07-13 19:04:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2892 states have (on average 2.050829875518672) internal successors, (5931), 2894 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-13 19:04:57,674 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-13 19:04:57,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:04:57,674 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-13 19:04:57,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:57,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-13 19:04:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:04:57,676 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:04:57,676 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:04:57,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-13 19:04:57,676 INFO L430 AbstractCegarLoop]: === Iteration 52 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:04:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:04:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1913044881, now seen corresponding path program 49 times [2021-07-13 19:04:57,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:04:57,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756748230] [2021-07-13 19:04:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:04:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:04:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:04:58,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:04:58,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756748230] [2021-07-13 19:04:58,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756748230] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:04:58,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:04:58,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:04:58,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911135605] [2021-07-13 19:04:58,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:04:58,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:04:58,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:04:58,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:04:58,096 INFO L87 Difference]: Start difference. First operand 2895 states and 5931 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:04:59,156 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-13 19:04:59,331 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-13 19:04:59,588 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-13 19:04:59,743 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:04:59,934 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-13 19:05:00,148 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-13 19:05:00,344 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-13 19:05:00,548 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2021-07-13 19:05:00,737 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-13 19:05:00,931 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-13 19:05:01,146 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-13 19:05:01,329 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-13 19:05:01,562 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-13 19:05:01,761 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-07-13 19:05:02,004 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-13 19:05:02,249 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-13 19:05:02,464 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-13 19:05:02,672 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-13 19:05:02,919 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-07-13 19:05:03,155 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-13 19:05:03,404 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-13 19:05:03,701 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-07-13 19:05:03,961 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-13 19:05:04,315 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-07-13 19:05:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:04,690 INFO L93 Difference]: Finished difference Result 3702 states and 7604 transitions. [2021-07-13 19:05:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-13 19:05:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:05:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:04,694 INFO L225 Difference]: With dead ends: 3702 [2021-07-13 19:05:04,695 INFO L226 Difference]: Without dead ends: 3702 [2021-07-13 19:05:04,695 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 5743.4ms TimeCoverageRelationStatistics Valid=1283, Invalid=3139, Unknown=0, NotChecked=0, Total=4422 [2021-07-13 19:05:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-07-13 19:05:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3146. [2021-07-13 19:05:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 3143 states have (on average 2.0531339484568885) internal successors, (6453), 3145 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 6453 transitions. [2021-07-13 19:05:04,729 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 6453 transitions. Word has length 85 [2021-07-13 19:05:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:04,729 INFO L482 AbstractCegarLoop]: Abstraction has 3146 states and 6453 transitions. [2021-07-13 19:05:04,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 6453 transitions. [2021-07-13 19:05:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:05:04,732 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:04,732 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:04,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-13 19:05:04,732 INFO L430 AbstractCegarLoop]: === Iteration 53 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:04,732 INFO L82 PathProgramCache]: Analyzing trace with hash 948818823, now seen corresponding path program 50 times [2021-07-13 19:05:04,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:04,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174412819] [2021-07-13 19:05:04,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:05,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:05,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174412819] [2021-07-13 19:05:05,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174412819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:05,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:05,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-13 19:05:05,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264416559] [2021-07-13 19:05:05,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-13 19:05:05,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:05,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-13 19:05:05,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-07-13 19:05:05,180 INFO L87 Difference]: Start difference. First operand 3146 states and 6453 transitions. Second operand has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:07,342 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-13 19:05:07,484 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2021-07-13 19:05:07,727 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2021-07-13 19:05:08,128 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-13 19:05:08,612 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-07-13 19:05:09,008 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-13 19:05:09,556 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-13 19:05:09,705 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-13 19:05:10,128 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-13 19:05:10,270 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 68 [2021-07-13 19:05:10,450 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-13 19:05:10,612 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:05:10,780 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-13 19:05:10,917 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2021-07-13 19:05:11,062 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:05:11,235 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-13 19:05:11,401 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-07-13 19:05:11,586 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-13 19:05:11,719 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-13 19:05:11,896 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:05:12,104 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-07-13 19:05:12,291 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-13 19:05:12,483 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-13 19:05:12,688 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-07-13 19:05:12,880 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-13 19:05:13,043 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-13 19:05:13,257 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:05:13,480 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-13 19:05:13,683 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-07-13 19:05:13,863 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-13 19:05:14,114 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:05:14,294 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2021-07-13 19:05:14,507 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-13 19:05:14,754 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:05:14,981 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-13 19:05:15,212 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2021-07-13 19:05:15,453 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-13 19:05:15,702 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-13 19:05:15,904 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-13 19:05:16,116 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-07-13 19:05:16,317 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-13 19:05:16,570 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:05:16,786 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-13 19:05:17,091 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-13 19:05:17,350 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-13 19:05:17,613 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:05:17,868 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:05:18,091 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:05:18,371 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:05:18,676 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:05:18,990 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-13 19:05:19,344 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-13 19:05:19,690 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:05:20,069 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-13 19:05:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:20,356 INFO L93 Difference]: Finished difference Result 3966 states and 8141 transitions. [2021-07-13 19:05:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-13 19:05:20,356 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:05:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:20,360 INFO L225 Difference]: With dead ends: 3966 [2021-07-13 19:05:20,361 INFO L226 Difference]: Without dead ends: 3966 [2021-07-13 19:05:20,361 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 13836.0ms TimeCoverageRelationStatistics Valid=4334, Invalid=10672, Unknown=0, NotChecked=0, Total=15006 [2021-07-13 19:05:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2021-07-13 19:05:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 2895. [2021-07-13 19:05:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2892 states have (on average 2.050829875518672) internal successors, (5931), 2894 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-13 19:05:20,387 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-13 19:05:20,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:20,388 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-13 19:05:20,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.1481481481481484) internal successors, (85), 27 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:20,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-13 19:05:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-13 19:05:20,390 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:20,390 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:20,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-13 19:05:20,390 INFO L430 AbstractCegarLoop]: === Iteration 54 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:20,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1688111427, now seen corresponding path program 51 times [2021-07-13 19:05:20,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:20,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724270062] [2021-07-13 19:05:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:20,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:20,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724270062] [2021-07-13 19:05:20,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724270062] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:20,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:20,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-13 19:05:20,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218697228] [2021-07-13 19:05:20,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-13 19:05:20,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-13 19:05:20,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-07-13 19:05:20,958 INFO L87 Difference]: Start difference. First operand 2895 states and 5931 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:22,728 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-07-13 19:05:23,076 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2021-07-13 19:05:23,323 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-13 19:05:24,146 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-07-13 19:05:24,400 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:05:25,064 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-13 19:05:25,218 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2021-07-13 19:05:25,355 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 67 [2021-07-13 19:05:25,643 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-13 19:05:25,778 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-07-13 19:05:25,921 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-13 19:05:26,089 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-13 19:05:26,250 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-07-13 19:05:26,402 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-07-13 19:05:26,540 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2021-07-13 19:05:26,703 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:05:26,881 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2021-07-13 19:05:27,056 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-07-13 19:05:27,231 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-13 19:05:27,568 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 75 [2021-07-13 19:05:27,740 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:05:27,915 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-13 19:05:28,111 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-13 19:05:28,302 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-13 19:05:28,465 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-13 19:05:28,689 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2021-07-13 19:05:28,889 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-13 19:05:29,080 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-13 19:05:29,292 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-13 19:05:29,511 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2021-07-13 19:05:29,718 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-07-13 19:05:29,980 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-13 19:05:30,195 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-13 19:05:30,404 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-13 19:05:30,617 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-07-13 19:05:30,842 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 86 [2021-07-13 19:05:31,040 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2021-07-13 19:05:31,300 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2021-07-13 19:05:31,562 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-13 19:05:31,789 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2021-07-13 19:05:32,041 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-07-13 19:05:32,303 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2021-07-13 19:05:32,548 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-07-13 19:05:32,829 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 97 [2021-07-13 19:05:33,148 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 100 [2021-07-13 19:05:33,419 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 94 [2021-07-13 19:05:33,757 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 99 [2021-07-13 19:05:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:34,199 INFO L93 Difference]: Finished difference Result 3389 states and 6936 transitions. [2021-07-13 19:05:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-07-13 19:05:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-07-13 19:05:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:34,203 INFO L225 Difference]: With dead ends: 3389 [2021-07-13 19:05:34,204 INFO L226 Difference]: Without dead ends: 3389 [2021-07-13 19:05:34,204 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 12405.0ms TimeCoverageRelationStatistics Valid=3861, Invalid=9711, Unknown=0, NotChecked=0, Total=13572 [2021-07-13 19:05:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2021-07-13 19:05:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2556. [2021-07-13 19:05:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2553 states have (on average 2.0505287896592246) internal successors, (5235), 2555 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 5235 transitions. [2021-07-13 19:05:34,230 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 5235 transitions. Word has length 85 [2021-07-13 19:05:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:34,230 INFO L482 AbstractCegarLoop]: Abstraction has 2556 states and 5235 transitions. [2021-07-13 19:05:34,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 5235 transitions. [2021-07-13 19:05:34,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:05:34,232 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:34,232 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:34,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-13 19:05:34,232 INFO L430 AbstractCegarLoop]: === Iteration 55 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash 817173876, now seen corresponding path program 1 times [2021-07-13 19:05:34,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:34,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160305280] [2021-07-13 19:05:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:35,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:35,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160305280] [2021-07-13 19:05:35,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160305280] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:35,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:35,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:05:35,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792744227] [2021-07-13 19:05:35,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:05:35,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:05:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:05:35,150 INFO L87 Difference]: Start difference. First operand 2556 states and 5235 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:36,431 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-07-13 19:05:36,624 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:05:36,947 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:05:37,253 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:05:37,548 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:05:37,785 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:05:38,027 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:05:38,323 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:05:38,580 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:05:38,806 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:05:39,211 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:05:39,490 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:05:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:42,008 INFO L93 Difference]: Finished difference Result 4618 states and 9485 transitions. [2021-07-13 19:05:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:05:42,009 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:05:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:42,014 INFO L225 Difference]: With dead ends: 4618 [2021-07-13 19:05:42,014 INFO L226 Difference]: Without dead ends: 4618 [2021-07-13 19:05:42,014 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 5443.6ms TimeCoverageRelationStatistics Valid=1246, Invalid=5726, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:05:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4618 states. [2021-07-13 19:05:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4618 to 3655. [2021-07-13 19:05:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 3652 states have (on average 2.0550383351588173) internal successors, (7505), 3654 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 7505 transitions. [2021-07-13 19:05:42,047 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 7505 transitions. Word has length 88 [2021-07-13 19:05:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:42,047 INFO L482 AbstractCegarLoop]: Abstraction has 3655 states and 7505 transitions. [2021-07-13 19:05:42,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 7505 transitions. [2021-07-13 19:05:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:05:42,050 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:42,050 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:42,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-13 19:05:42,050 INFO L430 AbstractCegarLoop]: === Iteration 56 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:42,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:42,050 INFO L82 PathProgramCache]: Analyzing trace with hash -2135192456, now seen corresponding path program 2 times [2021-07-13 19:05:42,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:42,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884776572] [2021-07-13 19:05:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:43,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:43,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884776572] [2021-07-13 19:05:43,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884776572] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:43,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:43,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:05:43,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403890947] [2021-07-13 19:05:43,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:05:43,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:43,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:05:43,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:05:43,030 INFO L87 Difference]: Start difference. First operand 3655 states and 7505 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:44,240 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-07-13 19:05:44,436 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:05:44,677 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:05:44,885 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:05:45,095 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:05:45,463 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:05:45,698 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:05:45,907 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:05:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:48,638 INFO L93 Difference]: Finished difference Result 5494 states and 11303 transitions. [2021-07-13 19:05:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:05:48,639 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:05:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:48,644 INFO L225 Difference]: With dead ends: 5494 [2021-07-13 19:05:48,644 INFO L226 Difference]: Without dead ends: 5494 [2021-07-13 19:05:48,644 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4675.6ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:05:48,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-07-13 19:05:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 3732. [2021-07-13 19:05:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3729 states have (on average 2.055242692410834) internal successors, (7664), 3731 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 7664 transitions. [2021-07-13 19:05:48,684 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 7664 transitions. Word has length 88 [2021-07-13 19:05:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:48,684 INFO L482 AbstractCegarLoop]: Abstraction has 3732 states and 7664 transitions. [2021-07-13 19:05:48,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 7664 transitions. [2021-07-13 19:05:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:05:48,686 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:48,687 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:48,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-13 19:05:48,687 INFO L430 AbstractCegarLoop]: === Iteration 57 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:48,687 INFO L82 PathProgramCache]: Analyzing trace with hash -43801058, now seen corresponding path program 3 times [2021-07-13 19:05:48,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:48,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50182732] [2021-07-13 19:05:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:49,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:49,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50182732] [2021-07-13 19:05:49,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50182732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:49,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:49,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:05:49,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971639549] [2021-07-13 19:05:49,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:05:49,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:49,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:05:49,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:05:49,594 INFO L87 Difference]: Start difference. First operand 3732 states and 7664 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:50,768 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-07-13 19:05:50,976 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-07-13 19:05:51,178 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:05:51,400 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-13 19:05:51,757 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-07-13 19:05:51,997 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-13 19:05:52,200 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-13 19:05:52,428 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-07-13 19:05:52,646 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-07-13 19:05:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:05:55,558 INFO L93 Difference]: Finished difference Result 6104 states and 12555 transitions. [2021-07-13 19:05:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 19:05:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:05:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:05:55,565 INFO L225 Difference]: With dead ends: 6104 [2021-07-13 19:05:55,565 INFO L226 Difference]: Without dead ends: 6104 [2021-07-13 19:05:55,565 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 4949.8ms TimeCoverageRelationStatistics Valid=1184, Invalid=5458, Unknown=0, NotChecked=0, Total=6642 [2021-07-13 19:05:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2021-07-13 19:05:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 3804. [2021-07-13 19:05:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3801 states have (on average 2.0552486187845305) internal successors, (7812), 3803 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-13 19:05:55,602 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-13 19:05:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:05:55,602 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-13 19:05:55,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-13 19:05:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:05:55,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:05:55,605 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:05:55,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-13 19:05:55,605 INFO L430 AbstractCegarLoop]: === Iteration 58 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:05:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:05:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash -703678456, now seen corresponding path program 4 times [2021-07-13 19:05:55,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:05:55,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656783243] [2021-07-13 19:05:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:05:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:05:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:05:56,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:05:56,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656783243] [2021-07-13 19:05:56,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656783243] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:05:56,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:05:56,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:05:56,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189938777] [2021-07-13 19:05:56,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:05:56,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:05:56,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:05:56,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:05:56,353 INFO L87 Difference]: Start difference. First operand 3804 states and 7812 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:05:57,565 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:05:57,789 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:05:57,997 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:05:58,226 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:05:58,583 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-13 19:05:58,847 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-13 19:05:59,068 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:05:59,271 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:06:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:01,959 INFO L93 Difference]: Finished difference Result 5283 states and 10853 transitions. [2021-07-13 19:06:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:06:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:01,964 INFO L225 Difference]: With dead ends: 5283 [2021-07-13 19:06:01,964 INFO L226 Difference]: Without dead ends: 5283 [2021-07-13 19:06:01,965 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 4432.5ms TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 19:06:01,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5283 states. [2021-07-13 19:06:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5283 to 3804. [2021-07-13 19:06:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3801 states have (on average 2.0552486187845305) internal successors, (7812), 3803 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-13 19:06:02,001 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-13 19:06:02,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:02,001 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-13 19:06:02,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-13 19:06:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:02,003 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:02,003 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:02,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-13 19:06:02,004 INFO L430 AbstractCegarLoop]: === Iteration 59 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash -427689492, now seen corresponding path program 5 times [2021-07-13 19:06:02,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:02,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9625240] [2021-07-13 19:06:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:02,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:02,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9625240] [2021-07-13 19:06:02,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9625240] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:02,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:02,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:06:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534241331] [2021-07-13 19:06:02,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:06:02,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:02,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:06:02,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:06:02,765 INFO L87 Difference]: Start difference. First operand 3804 states and 7812 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:03,950 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:06:04,164 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:06:04,364 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:06:04,592 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:06:04,827 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-07-13 19:06:05,045 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-13 19:06:05,450 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-07-13 19:06:05,697 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-13 19:06:05,899 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-13 19:06:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:08,522 INFO L93 Difference]: Finished difference Result 5358 states and 11018 transitions. [2021-07-13 19:06:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:06:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:08,528 INFO L225 Difference]: With dead ends: 5358 [2021-07-13 19:06:08,528 INFO L226 Difference]: Without dead ends: 5358 [2021-07-13 19:06:08,528 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 4669.6ms TimeCoverageRelationStatistics Valid=1094, Invalid=5068, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:06:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2021-07-13 19:06:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 3804. [2021-07-13 19:06:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3801 states have (on average 2.0552486187845305) internal successors, (7812), 3803 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-13 19:06:08,563 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-13 19:06:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:08,563 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-13 19:06:08,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-13 19:06:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:08,565 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:08,565 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:08,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-13 19:06:08,565 INFO L430 AbstractCegarLoop]: === Iteration 60 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash -731666988, now seen corresponding path program 6 times [2021-07-13 19:06:08,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:08,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103242481] [2021-07-13 19:06:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:09,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:09,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103242481] [2021-07-13 19:06:09,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103242481] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:09,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:09,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:06:09,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295532789] [2021-07-13 19:06:09,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:06:09,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:06:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:06:09,337 INFO L87 Difference]: Start difference. First operand 3804 states and 7812 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:10,525 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:06:10,732 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:06:10,961 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:06:11,178 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:06:11,395 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-13 19:06:11,782 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-13 19:06:12,013 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:06:12,211 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:06:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:14,892 INFO L93 Difference]: Finished difference Result 5493 states and 11303 transitions. [2021-07-13 19:06:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:06:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:14,898 INFO L225 Difference]: With dead ends: 5493 [2021-07-13 19:06:14,899 INFO L226 Difference]: Without dead ends: 5493 [2021-07-13 19:06:14,899 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 4428.2ms TimeCoverageRelationStatistics Valid=1055, Invalid=4951, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 19:06:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2021-07-13 19:06:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 3804. [2021-07-13 19:06:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3804 states, 3801 states have (on average 2.0552486187845305) internal successors, (7812), 3803 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-13 19:06:14,941 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-13 19:06:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:14,942 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-13 19:06:14,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-13 19:06:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:14,944 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:14,944 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:14,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-13 19:06:14,945 INFO L430 AbstractCegarLoop]: === Iteration 61 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:14,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1508630058, now seen corresponding path program 7 times [2021-07-13 19:06:14,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:14,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369365344] [2021-07-13 19:06:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:15,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:15,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369365344] [2021-07-13 19:06:15,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369365344] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:15,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:15,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:06:15,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002939466] [2021-07-13 19:06:15,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:06:15,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:15,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:06:15,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:06:15,840 INFO L87 Difference]: Start difference. First operand 3804 states and 7812 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:17,154 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:06:17,429 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:06:17,698 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:06:17,958 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:06:18,191 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:06:18,436 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:06:18,709 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:06:18,951 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:06:19,169 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:06:19,551 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:06:19,826 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:06:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:22,069 INFO L93 Difference]: Finished difference Result 5990 states and 12319 transitions. [2021-07-13 19:06:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:06:22,070 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:22,077 INFO L225 Difference]: With dead ends: 5990 [2021-07-13 19:06:22,077 INFO L226 Difference]: Without dead ends: 5990 [2021-07-13 19:06:22,077 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 5268.6ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:06:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2021-07-13 19:06:22,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 4050. [2021-07-13 19:06:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 4047 states have (on average 2.054855448480356) internal successors, (8316), 4049 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 8316 transitions. [2021-07-13 19:06:22,127 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 8316 transitions. Word has length 88 [2021-07-13 19:06:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:22,127 INFO L482 AbstractCegarLoop]: Abstraction has 4050 states and 8316 transitions. [2021-07-13 19:06:22,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 8316 transitions. [2021-07-13 19:06:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:22,130 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:22,131 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:22,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-13 19:06:22,131 INFO L430 AbstractCegarLoop]: === Iteration 62 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash -166029094, now seen corresponding path program 8 times [2021-07-13 19:06:22,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:22,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045083334] [2021-07-13 19:06:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:23,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:23,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045083334] [2021-07-13 19:06:23,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045083334] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:23,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:23,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:06:23,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303441831] [2021-07-13 19:06:23,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:06:23,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:23,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:06:23,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:06:23,054 INFO L87 Difference]: Start difference. First operand 4050 states and 8316 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:24,449 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:06:24,700 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:06:24,921 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:06:25,140 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:06:25,528 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:06:25,761 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:06:25,958 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:06:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:28,757 INFO L93 Difference]: Finished difference Result 6606 states and 13591 transitions. [2021-07-13 19:06:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:06:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:28,764 INFO L225 Difference]: With dead ends: 6606 [2021-07-13 19:06:28,764 INFO L226 Difference]: Without dead ends: 6606 [2021-07-13 19:06:28,764 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 4551.8ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:06:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-07-13 19:06:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 3834. [2021-07-13 19:06:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3834 states, 3831 states have (on average 2.0548159749412687) internal successors, (7872), 3833 states have internal predecessors, (7872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 7872 transitions. [2021-07-13 19:06:28,803 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 7872 transitions. Word has length 88 [2021-07-13 19:06:28,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:28,803 INFO L482 AbstractCegarLoop]: Abstraction has 3834 states and 7872 transitions. [2021-07-13 19:06:28,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 7872 transitions. [2021-07-13 19:06:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:28,805 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:28,805 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:28,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-13 19:06:28,806 INFO L430 AbstractCegarLoop]: === Iteration 63 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:28,806 INFO L82 PathProgramCache]: Analyzing trace with hash 180679830, now seen corresponding path program 9 times [2021-07-13 19:06:28,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:28,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332114283] [2021-07-13 19:06:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:29,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:29,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332114283] [2021-07-13 19:06:29,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332114283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:29,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:29,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:06:29,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169618897] [2021-07-13 19:06:29,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:06:29,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:29,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:06:29,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:06:29,717 INFO L87 Difference]: Start difference. First operand 3834 states and 7872 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:31,046 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:06:31,327 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:06:31,605 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:06:31,875 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:06:32,106 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:06:32,339 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:06:32,611 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:06:32,851 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:06:33,073 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:06:33,484 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:06:33,787 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:06:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:36,197 INFO L93 Difference]: Finished difference Result 6035 states and 12409 transitions. [2021-07-13 19:06:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:06:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:36,203 INFO L225 Difference]: With dead ends: 6035 [2021-07-13 19:06:36,203 INFO L226 Difference]: Without dead ends: 6035 [2021-07-13 19:06:36,203 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 5330.2ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:06:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2021-07-13 19:06:36,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4095. [2021-07-13 19:06:36,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 4092 states have (on average 2.0542521994134897) internal successors, (8406), 4094 states have internal predecessors, (8406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 8406 transitions. [2021-07-13 19:06:36,251 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 8406 transitions. Word has length 88 [2021-07-13 19:06:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:36,252 INFO L482 AbstractCegarLoop]: Abstraction has 4095 states and 8406 transitions. [2021-07-13 19:06:36,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:36,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 8406 transitions. [2021-07-13 19:06:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:36,255 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:36,255 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:36,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-13 19:06:36,255 INFO L430 AbstractCegarLoop]: === Iteration 64 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1523280794, now seen corresponding path program 10 times [2021-07-13 19:06:36,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:36,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772771749] [2021-07-13 19:06:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:37,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:37,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772771749] [2021-07-13 19:06:37,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772771749] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:37,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:37,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:06:37,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926350953] [2021-07-13 19:06:37,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:06:37,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:37,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:06:37,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:06:37,184 INFO L87 Difference]: Start difference. First operand 4095 states and 8406 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:38,535 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:06:38,786 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:06:38,999 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:06:39,213 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:06:39,604 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:06:39,842 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:06:40,047 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:06:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:42,702 INFO L93 Difference]: Finished difference Result 6651 states and 13681 transitions. [2021-07-13 19:06:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:06:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:42,709 INFO L225 Difference]: With dead ends: 6651 [2021-07-13 19:06:42,709 INFO L226 Difference]: Without dead ends: 6651 [2021-07-13 19:06:42,710 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 4514.1ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:06:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-07-13 19:06:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 3849. [2021-07-13 19:06:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3846 states have (on average 2.0546021840873636) internal successors, (7902), 3848 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 7902 transitions. [2021-07-13 19:06:42,760 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 7902 transitions. Word has length 88 [2021-07-13 19:06:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:42,760 INFO L482 AbstractCegarLoop]: Abstraction has 3849 states and 7902 transitions. [2021-07-13 19:06:42,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 7902 transitions. [2021-07-13 19:06:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:42,763 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:42,763 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:42,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-13 19:06:42,763 INFO L430 AbstractCegarLoop]: === Iteration 65 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash -450732108, now seen corresponding path program 11 times [2021-07-13 19:06:42,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:42,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800338343] [2021-07-13 19:06:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:43,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:43,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800338343] [2021-07-13 19:06:43,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800338343] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:43,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:43,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:06:43,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580053888] [2021-07-13 19:06:43,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:06:43,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:06:43,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:06:43,635 INFO L87 Difference]: Start difference. First operand 3849 states and 7902 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:44,959 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:06:45,243 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:06:45,522 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:06:45,778 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:06:46,008 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:06:46,234 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:06:46,503 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:06:46,755 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:06:46,974 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:06:47,359 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:06:47,630 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:06:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:49,950 INFO L93 Difference]: Finished difference Result 6065 states and 12469 transitions. [2021-07-13 19:06:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:06:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:49,956 INFO L225 Difference]: With dead ends: 6065 [2021-07-13 19:06:49,956 INFO L226 Difference]: Without dead ends: 6065 [2021-07-13 19:06:49,956 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 5249.2ms TimeCoverageRelationStatistics Valid=1244, Invalid=5728, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:06:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2021-07-13 19:06:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 4125. [2021-07-13 19:06:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4122 states have (on average 2.053857350800582) internal successors, (8466), 4124 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 8466 transitions. [2021-07-13 19:06:49,994 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 8466 transitions. Word has length 88 [2021-07-13 19:06:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:49,995 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 8466 transitions. [2021-07-13 19:06:49,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 8466 transitions. [2021-07-13 19:06:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:49,998 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:49,998 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:49,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-13 19:06:49,998 INFO L430 AbstractCegarLoop]: === Iteration 66 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:49,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash 891868856, now seen corresponding path program 12 times [2021-07-13 19:06:49,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:49,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689832317] [2021-07-13 19:06:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:50,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:50,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689832317] [2021-07-13 19:06:50,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689832317] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:50,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:50,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:06:50,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451242866] [2021-07-13 19:06:50,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:06:50,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:50,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:06:50,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:06:50,916 INFO L87 Difference]: Start difference. First operand 4125 states and 8466 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:52,099 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2021-07-13 19:06:52,293 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:06:52,540 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:06:52,751 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:06:52,958 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:06:53,341 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:06:53,584 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:06:53,784 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:06:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:06:56,607 INFO L93 Difference]: Finished difference Result 6681 states and 13741 transitions. [2021-07-13 19:06:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:06:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:06:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:06:56,614 INFO L225 Difference]: With dead ends: 6681 [2021-07-13 19:06:56,614 INFO L226 Difference]: Without dead ends: 6681 [2021-07-13 19:06:56,614 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4526.1ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:06:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2021-07-13 19:06:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 3864. [2021-07-13 19:06:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3861 states have (on average 2.0543900543900544) internal successors, (7932), 3863 states have internal predecessors, (7932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 7932 transitions. [2021-07-13 19:06:56,653 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 7932 transitions. Word has length 88 [2021-07-13 19:06:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:06:56,653 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 7932 transitions. [2021-07-13 19:06:56,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 7932 transitions. [2021-07-13 19:06:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:06:56,655 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:06:56,655 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:06:56,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-13 19:06:56,655 INFO L430 AbstractCegarLoop]: === Iteration 67 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:06:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:06:56,656 INFO L82 PathProgramCache]: Analyzing trace with hash -898147370, now seen corresponding path program 13 times [2021-07-13 19:06:56,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:06:56,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088344643] [2021-07-13 19:06:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:06:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:06:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:06:57,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:06:57,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088344643] [2021-07-13 19:06:57,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088344643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:06:57,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:06:57,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:06:57,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699774708] [2021-07-13 19:06:57,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:06:57,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:06:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:06:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:06:57,520 INFO L87 Difference]: Start difference. First operand 3864 states and 7932 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:06:58,931 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:06:59,255 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:06:59,570 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:06:59,854 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:07:00,095 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:07:00,338 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:07:00,620 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:07:00,859 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:07:01,079 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:07:01,494 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:07:01,767 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:07:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:04,360 INFO L93 Difference]: Finished difference Result 6125 states and 12589 transitions. [2021-07-13 19:07:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:07:04,361 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:04,366 INFO L225 Difference]: With dead ends: 6125 [2021-07-13 19:07:04,366 INFO L226 Difference]: Without dead ends: 6125 [2021-07-13 19:07:04,367 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 5242.5ms TimeCoverageRelationStatistics Valid=1244, Invalid=5728, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:07:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2021-07-13 19:07:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 4185. [2021-07-13 19:07:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 4182 states have (on average 2.053084648493544) internal successors, (8586), 4184 states have internal predecessors, (8586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 8586 transitions. [2021-07-13 19:07:04,405 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 8586 transitions. Word has length 88 [2021-07-13 19:07:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:04,405 INFO L482 AbstractCegarLoop]: Abstraction has 4185 states and 8586 transitions. [2021-07-13 19:07:04,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 8586 transitions. [2021-07-13 19:07:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:04,407 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:04,408 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:04,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-13 19:07:04,408 INFO L430 AbstractCegarLoop]: === Iteration 68 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash 444453594, now seen corresponding path program 14 times [2021-07-13 19:07:04,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:04,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886958545] [2021-07-13 19:07:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:05,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:05,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886958545] [2021-07-13 19:07:05,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886958545] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:05,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:05,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:07:05,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812389328] [2021-07-13 19:07:05,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:07:05,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:07:05,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:07:05,321 INFO L87 Difference]: Start difference. First operand 4185 states and 8586 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:06,667 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:07:06,922 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:07:07,136 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:07:07,340 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:07:07,747 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:07:07,992 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:07:08,211 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:07:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:10,998 INFO L93 Difference]: Finished difference Result 6741 states and 13861 transitions. [2021-07-13 19:07:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:07:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:11,005 INFO L225 Difference]: With dead ends: 6741 [2021-07-13 19:07:11,005 INFO L226 Difference]: Without dead ends: 6741 [2021-07-13 19:07:11,005 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4494.3ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:07:11,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-07-13 19:07:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 3909. [2021-07-13 19:07:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3906 states have (on average 2.053763440860215) internal successors, (8022), 3908 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) [2021-07-13 19:07:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 8022 transitions. [2021-07-13 19:07:11,060 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 8022 transitions. Word has length 88 [2021-07-13 19:07:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:11,060 INFO L482 AbstractCegarLoop]: Abstraction has 3909 states and 8022 transitions. [2021-07-13 19:07:11,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 8022 transitions. [2021-07-13 19:07:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:11,063 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:11,063 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:11,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-13 19:07:11,063 INFO L430 AbstractCegarLoop]: === Iteration 69 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:11,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1285639500, now seen corresponding path program 15 times [2021-07-13 19:07:11,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:11,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608580604] [2021-07-13 19:07:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:11,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:11,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608580604] [2021-07-13 19:07:11,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608580604] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:11,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:11,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-13 19:07:11,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15868971] [2021-07-13 19:07:11,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-13 19:07:11,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:11,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-13 19:07:11,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-13 19:07:11,916 INFO L87 Difference]: Start difference. First operand 3909 states and 8022 transitions. Second operand has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:13,232 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-13 19:07:13,527 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-13 19:07:13,820 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-13 19:07:14,084 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-13 19:07:14,322 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-13 19:07:14,552 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:07:14,825 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-13 19:07:15,074 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-13 19:07:15,292 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-13 19:07:15,678 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-13 19:07:15,946 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-13 19:07:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:18,309 INFO L93 Difference]: Finished difference Result 5885 states and 12094 transitions. [2021-07-13 19:07:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-13 19:07:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:18,316 INFO L225 Difference]: With dead ends: 5885 [2021-07-13 19:07:18,316 INFO L226 Difference]: Without dead ends: 5885 [2021-07-13 19:07:18,316 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 5200.9ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-13 19:07:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2021-07-13 19:07:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 4230. [2021-07-13 19:07:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4227 states have (on average 2.0525195173882187) internal successors, (8676), 4229 states have internal predecessors, (8676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 8676 transitions. [2021-07-13 19:07:18,359 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 8676 transitions. Word has length 88 [2021-07-13 19:07:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:18,359 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 8676 transitions. [2021-07-13 19:07:18,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 36 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 8676 transitions. [2021-07-13 19:07:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:18,363 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:18,363 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:18,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-13 19:07:18,363 INFO L430 AbstractCegarLoop]: === Iteration 70 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:18,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:18,363 INFO L82 PathProgramCache]: Analyzing trace with hash 56961464, now seen corresponding path program 16 times [2021-07-13 19:07:18,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:18,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251930149] [2021-07-13 19:07:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:19,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:19,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251930149] [2021-07-13 19:07:19,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251930149] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:19,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:19,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:07:19,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959648126] [2021-07-13 19:07:19,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:07:19,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:07:19,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:07:19,288 INFO L87 Difference]: Start difference. First operand 4230 states and 8676 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:20,578 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-13 19:07:20,813 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-13 19:07:21,019 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-13 19:07:21,224 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-13 19:07:21,588 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-13 19:07:21,823 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-13 19:07:22,026 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-13 19:07:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:24,672 INFO L93 Difference]: Finished difference Result 6501 states and 13366 transitions. [2021-07-13 19:07:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:07:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:24,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:24,679 INFO L225 Difference]: With dead ends: 6501 [2021-07-13 19:07:24,680 INFO L226 Difference]: Without dead ends: 6501 [2021-07-13 19:07:24,680 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 4526.0ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:07:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2021-07-13 19:07:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 3909. [2021-07-13 19:07:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3906 states have (on average 2.053763440860215) internal successors, (8022), 3908 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) [2021-07-13 19:07:24,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 8022 transitions. [2021-07-13 19:07:24,722 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 8022 transitions. Word has length 88 [2021-07-13 19:07:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:24,722 INFO L482 AbstractCegarLoop]: Abstraction has 3909 states and 8022 transitions. [2021-07-13 19:07:24,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 8022 transitions. [2021-07-13 19:07:24,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:24,725 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:24,725 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:24,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-13 19:07:24,725 INFO L430 AbstractCegarLoop]: === Iteration 71 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1509339986, now seen corresponding path program 17 times [2021-07-13 19:07:24,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:24,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598048895] [2021-07-13 19:07:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:26,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:26,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598048895] [2021-07-13 19:07:26,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598048895] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:26,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:26,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:07:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817262592] [2021-07-13 19:07:26,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:07:26,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:26,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:07:26,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1700, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:07:26,231 INFO L87 Difference]: Start difference. First operand 3909 states and 8022 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:27,620 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-13 19:07:27,873 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:07:28,295 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:07:28,701 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:07:28,971 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:07:29,325 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:07:29,614 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:07:29,918 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 86 [2021-07-13 19:07:30,310 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2021-07-13 19:07:30,643 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 102 [2021-07-13 19:07:30,965 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 95 [2021-07-13 19:07:31,214 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:07:31,510 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 98 [2021-07-13 19:07:31,872 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-07-13 19:07:32,197 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:07:32,543 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:07:32,787 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-13 19:07:33,325 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-13 19:07:33,486 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:07:33,710 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-13 19:07:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:36,466 INFO L93 Difference]: Finished difference Result 6588 states and 13566 transitions. [2021-07-13 19:07:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 19:07:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:36,473 INFO L225 Difference]: With dead ends: 6588 [2021-07-13 19:07:36,473 INFO L226 Difference]: Without dead ends: 6588 [2021-07-13 19:07:36,474 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 8691.3ms TimeCoverageRelationStatistics Valid=1865, Invalid=8847, Unknown=0, NotChecked=0, Total=10712 [2021-07-13 19:07:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-07-13 19:07:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4025. [2021-07-13 19:07:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4022 states have (on average 2.0529587270014917) internal successors, (8257), 4024 states have internal predecessors, (8257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 8257 transitions. [2021-07-13 19:07:36,526 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 8257 transitions. Word has length 88 [2021-07-13 19:07:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:36,526 INFO L482 AbstractCegarLoop]: Abstraction has 4025 states and 8257 transitions. [2021-07-13 19:07:36,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 8257 transitions. [2021-07-13 19:07:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:36,529 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:36,529 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:36,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-13 19:07:36,529 INFO L430 AbstractCegarLoop]: === Iteration 72 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -770449374, now seen corresponding path program 18 times [2021-07-13 19:07:36,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:36,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674589672] [2021-07-13 19:07:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:38,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:38,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674589672] [2021-07-13 19:07:38,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674589672] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:38,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:38,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:07:38,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088937127] [2021-07-13 19:07:38,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:07:38,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:38,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:07:38,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1702, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:07:38,058 INFO L87 Difference]: Start difference. First operand 4025 states and 8257 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:39,462 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-13 19:07:39,714 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:07:40,123 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:07:40,508 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:07:40,865 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:07:41,149 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-13 19:07:41,447 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-13 19:07:41,745 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2021-07-13 19:07:42,153 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2021-07-13 19:07:42,495 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 99 [2021-07-13 19:07:42,825 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-07-13 19:07:43,081 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-13 19:07:43,416 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-13 19:07:43,809 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 88 [2021-07-13 19:07:44,141 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:07:44,488 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:07:45,206 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:07:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:07:48,193 INFO L93 Difference]: Finished difference Result 6776 states and 13957 transitions. [2021-07-13 19:07:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:07:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:07:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:07:48,201 INFO L225 Difference]: With dead ends: 6776 [2021-07-13 19:07:48,201 INFO L226 Difference]: Without dead ends: 6776 [2021-07-13 19:07:48,202 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8460.3ms TimeCoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:07:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2021-07-13 19:07:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4026. [2021-07-13 19:07:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4023 states have (on average 2.052945563012677) internal successors, (8259), 4025 states have internal predecessors, (8259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 8259 transitions. [2021-07-13 19:07:48,242 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 8259 transitions. Word has length 88 [2021-07-13 19:07:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:07:48,243 INFO L482 AbstractCegarLoop]: Abstraction has 4026 states and 8259 transitions. [2021-07-13 19:07:48,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 8259 transitions. [2021-07-13 19:07:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:07:48,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:07:48,245 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:07:48,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-13 19:07:48,245 INFO L430 AbstractCegarLoop]: === Iteration 73 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:07:48,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:07:48,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1203116240, now seen corresponding path program 19 times [2021-07-13 19:07:48,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:07:48,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218983674] [2021-07-13 19:07:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:07:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:07:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:07:49,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:07:49,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218983674] [2021-07-13 19:07:49,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218983674] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:07:49,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:07:49,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:07:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181558139] [2021-07-13 19:07:49,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:07:49,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:07:49,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:07:49,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:07:49,756 INFO L87 Difference]: Start difference. First operand 4026 states and 8259 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:07:51,225 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-13 19:07:51,467 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:07:51,898 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:07:52,331 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:07:52,723 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:07:53,013 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-13 19:07:53,313 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-07-13 19:07:53,609 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-13 19:07:54,009 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-13 19:07:54,288 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-07-13 19:07:54,597 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-13 19:07:54,948 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 99 [2021-07-13 19:07:55,224 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 90 [2021-07-13 19:07:55,570 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 92 [2021-07-13 19:07:56,088 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:07:56,443 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:07:57,169 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:08:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:00,324 INFO L93 Difference]: Finished difference Result 8307 states and 17131 transitions. [2021-07-13 19:08:00,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:08:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:00,334 INFO L225 Difference]: With dead ends: 8307 [2021-07-13 19:08:00,334 INFO L226 Difference]: Without dead ends: 8307 [2021-07-13 19:08:00,335 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8563.2ms TimeCoverageRelationStatistics Valid=1824, Invalid=8682, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:08:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2021-07-13 19:08:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 4118. [2021-07-13 19:08:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4115 states have (on average 2.0539489671931954) internal successors, (8452), 4117 states have internal predecessors, (8452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 8452 transitions. [2021-07-13 19:08:00,384 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 8452 transitions. Word has length 88 [2021-07-13 19:08:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:00,384 INFO L482 AbstractCegarLoop]: Abstraction has 4118 states and 8452 transitions. [2021-07-13 19:08:00,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 8452 transitions. [2021-07-13 19:08:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:00,387 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:00,387 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:00,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-13 19:08:00,387 INFO L430 AbstractCegarLoop]: === Iteration 74 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:00,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:00,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1443026346, now seen corresponding path program 20 times [2021-07-13 19:08:00,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:00,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795039598] [2021-07-13 19:08:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:01,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:01,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795039598] [2021-07-13 19:08:01,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795039598] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:01,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:01,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:08:01,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718111786] [2021-07-13 19:08:01,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:08:01,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:08:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:08:01,280 INFO L87 Difference]: Start difference. First operand 4118 states and 8452 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:02,546 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:08:02,752 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-13 19:08:03,009 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:08:03,226 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:08:03,480 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:08:03,908 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:08:04,149 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:08:04,376 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-13 19:08:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:07,291 INFO L93 Difference]: Finished difference Result 7308 states and 15047 transitions. [2021-07-13 19:08:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:08:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:07,300 INFO L225 Difference]: With dead ends: 7308 [2021-07-13 19:08:07,300 INFO L226 Difference]: Without dead ends: 7308 [2021-07-13 19:08:07,300 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4678.5ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:08:07,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2021-07-13 19:08:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 3924. [2021-07-13 19:08:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3924 states, 3921 states have (on average 2.053557765876052) internal successors, (8052), 3923 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 8052 transitions. [2021-07-13 19:08:07,343 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 8052 transitions. Word has length 88 [2021-07-13 19:08:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:07,343 INFO L482 AbstractCegarLoop]: Abstraction has 3924 states and 8052 transitions. [2021-07-13 19:08:07,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 8052 transitions. [2021-07-13 19:08:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:07,346 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:07,346 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:07,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-13 19:08:07,346 INFO L430 AbstractCegarLoop]: === Iteration 75 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash 648365052, now seen corresponding path program 21 times [2021-07-13 19:08:07,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:07,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605866446] [2021-07-13 19:08:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:08,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:08,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605866446] [2021-07-13 19:08:08,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605866446] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:08,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:08,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:08:08,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297122252] [2021-07-13 19:08:08,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:08:08,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:08,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:08:08,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:08:08,103 INFO L87 Difference]: Start difference. First operand 3924 states and 8052 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:09,300 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:08:09,508 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:08:09,708 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:08:09,941 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-13 19:08:10,286 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-13 19:08:10,530 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:08:10,735 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-13 19:08:10,956 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-13 19:08:11,166 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-13 19:08:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:14,118 INFO L93 Difference]: Finished difference Result 7606 states and 15663 transitions. [2021-07-13 19:08:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-13 19:08:14,119 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:14,126 INFO L225 Difference]: With dead ends: 7606 [2021-07-13 19:08:14,127 INFO L226 Difference]: Without dead ends: 7606 [2021-07-13 19:08:14,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 4758.0ms TimeCoverageRelationStatistics Valid=1168, Invalid=5312, Unknown=0, NotChecked=0, Total=6480 [2021-07-13 19:08:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-07-13 19:08:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 3944. [2021-07-13 19:08:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 3941 states have (on average 2.053793453438214) internal successors, (8094), 3943 states have internal predecessors, (8094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 8094 transitions. [2021-07-13 19:08:14,170 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 8094 transitions. Word has length 88 [2021-07-13 19:08:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:14,170 INFO L482 AbstractCegarLoop]: Abstraction has 3944 states and 8094 transitions. [2021-07-13 19:08:14,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 8094 transitions. [2021-07-13 19:08:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:14,172 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:14,172 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:14,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-13 19:08:14,172 INFO L430 AbstractCegarLoop]: === Iteration 76 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash -11512346, now seen corresponding path program 22 times [2021-07-13 19:08:14,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:14,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482516377] [2021-07-13 19:08:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:14,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:14,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482516377] [2021-07-13 19:08:14,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482516377] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:14,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:14,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:08:14,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567501125] [2021-07-13 19:08:14,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:08:14,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:14,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:08:14,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:08:14,994 INFO L87 Difference]: Start difference. First operand 3944 states and 8094 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:16,179 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:08:16,386 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:08:16,594 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 19:08:16,827 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-13 19:08:17,165 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-13 19:08:17,437 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-07-13 19:08:17,682 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-13 19:08:17,908 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-07-13 19:08:18,746 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-13 19:08:18,911 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-13 19:08:19,126 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-13 19:08:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:20,968 INFO L93 Difference]: Finished difference Result 6118 states and 12575 transitions. [2021-07-13 19:08:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:08:20,968 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:20,974 INFO L225 Difference]: With dead ends: 6118 [2021-07-13 19:08:20,975 INFO L226 Difference]: Without dead ends: 6118 [2021-07-13 19:08:20,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 4966.0ms TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2021-07-13 19:08:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2021-07-13 19:08:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 3942. [2021-07-13 19:08:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3939 states have (on average 2.053820766692054) internal successors, (8090), 3941 states have internal predecessors, (8090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 8090 transitions. [2021-07-13 19:08:21,026 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 8090 transitions. Word has length 88 [2021-07-13 19:08:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:21,026 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 8090 transitions. [2021-07-13 19:08:21,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 8090 transitions. [2021-07-13 19:08:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:21,028 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:21,028 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:21,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-13 19:08:21,029 INFO L430 AbstractCegarLoop]: === Iteration 77 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash 264476618, now seen corresponding path program 23 times [2021-07-13 19:08:21,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:21,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291419426] [2021-07-13 19:08:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:21,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:21,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291419426] [2021-07-13 19:08:21,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291419426] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:21,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:21,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-13 19:08:21,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090750362] [2021-07-13 19:08:21,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-13 19:08:21,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:21,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-13 19:08:21,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-13 19:08:21,836 INFO L87 Difference]: Start difference. First operand 3942 states and 8090 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:23,039 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:08:23,244 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:08:23,445 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-13 19:08:23,680 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-13 19:08:23,893 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-13 19:08:24,116 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-13 19:08:24,512 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-13 19:08:24,781 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-07-13 19:08:25,006 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-13 19:08:25,949 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-13 19:08:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:28,029 INFO L93 Difference]: Finished difference Result 6142 states and 12638 transitions. [2021-07-13 19:08:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-13 19:08:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:28,035 INFO L225 Difference]: With dead ends: 6142 [2021-07-13 19:08:28,035 INFO L226 Difference]: Without dead ends: 6142 [2021-07-13 19:08:28,035 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 5053.3ms TimeCoverageRelationStatistics Valid=1093, Invalid=5069, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:08:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2021-07-13 19:08:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 3926. [2021-07-13 19:08:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3926 states, 3923 states have (on average 2.053530461381596) internal successors, (8056), 3925 states have internal predecessors, (8056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 8056 transitions. [2021-07-13 19:08:28,073 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 8056 transitions. Word has length 88 [2021-07-13 19:08:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:28,073 INFO L482 AbstractCegarLoop]: Abstraction has 3926 states and 8056 transitions. [2021-07-13 19:08:28,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 8056 transitions. [2021-07-13 19:08:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:28,075 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:28,075 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:28,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-13 19:08:28,075 INFO L430 AbstractCegarLoop]: === Iteration 78 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -39500878, now seen corresponding path program 24 times [2021-07-13 19:08:28,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:28,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488066803] [2021-07-13 19:08:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:29,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:29,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488066803] [2021-07-13 19:08:29,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488066803] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:29,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:29,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:08:29,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030132171] [2021-07-13 19:08:29,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:08:29,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:29,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:08:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:08:29,031 INFO L87 Difference]: Start difference. First operand 3926 states and 8056 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:30,252 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-13 19:08:30,481 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-13 19:08:30,726 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:08:30,938 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:08:31,171 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:08:31,590 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:08:31,846 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:08:32,063 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-13 19:08:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:34,884 INFO L93 Difference]: Finished difference Result 6277 states and 12923 transitions. [2021-07-13 19:08:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:08:34,884 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:34,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:34,890 INFO L225 Difference]: With dead ends: 6277 [2021-07-13 19:08:34,890 INFO L226 Difference]: Without dead ends: 6277 [2021-07-13 19:08:34,890 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4749.1ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:08:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2021-07-13 19:08:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 3920. [2021-07-13 19:08:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3917 states have (on average 2.053612458514169) internal successors, (8044), 3919 states have internal predecessors, (8044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 8044 transitions. [2021-07-13 19:08:34,928 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 8044 transitions. Word has length 88 [2021-07-13 19:08:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:34,928 INFO L482 AbstractCegarLoop]: Abstraction has 3920 states and 8044 transitions. [2021-07-13 19:08:34,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 8044 transitions. [2021-07-13 19:08:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:34,930 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:34,930 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:34,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-13 19:08:34,931 INFO L430 AbstractCegarLoop]: === Iteration 79 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash -816463948, now seen corresponding path program 25 times [2021-07-13 19:08:34,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:34,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123631570] [2021-07-13 19:08:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:36,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:36,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123631570] [2021-07-13 19:08:36,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123631570] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:36,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:36,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:08:36,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569519016] [2021-07-13 19:08:36,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:08:36,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:36,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:08:36,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1703, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:08:36,429 INFO L87 Difference]: Start difference. First operand 3920 states and 8044 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:37,903 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-07-13 19:08:38,154 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:08:38,592 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:08:39,016 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:08:39,306 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-13 19:08:39,685 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-13 19:08:39,994 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-13 19:08:40,288 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 86 [2021-07-13 19:08:40,687 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2021-07-13 19:08:41,023 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 102 [2021-07-13 19:08:41,365 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 95 [2021-07-13 19:08:41,609 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:08:41,901 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 98 [2021-07-13 19:08:42,266 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-07-13 19:08:42,612 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:08:42,964 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:08:43,212 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-13 19:08:43,948 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:08:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:47,064 INFO L93 Difference]: Finished difference Result 6720 states and 13841 transitions. [2021-07-13 19:08:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 19:08:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:47,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:47,073 INFO L225 Difference]: With dead ends: 6720 [2021-07-13 19:08:47,073 INFO L226 Difference]: Without dead ends: 6720 [2021-07-13 19:08:47,074 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 8682.8ms TimeCoverageRelationStatistics Valid=1862, Invalid=8850, Unknown=0, NotChecked=0, Total=10712 [2021-07-13 19:08:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2021-07-13 19:08:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 4065. [2021-07-13 19:08:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4062 states have (on average 2.052437223042836) internal successors, (8337), 4064 states have internal predecessors, (8337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 8337 transitions. [2021-07-13 19:08:47,120 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 8337 transitions. Word has length 88 [2021-07-13 19:08:47,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:47,120 INFO L482 AbstractCegarLoop]: Abstraction has 4065 states and 8337 transitions. [2021-07-13 19:08:47,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 8337 transitions. [2021-07-13 19:08:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:47,123 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:47,123 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:47,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-13 19:08:47,123 INFO L430 AbstractCegarLoop]: === Iteration 80 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1198713988, now seen corresponding path program 26 times [2021-07-13 19:08:47,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:47,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253330663] [2021-07-13 19:08:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:08:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:08:48,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:08:48,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253330663] [2021-07-13 19:08:48,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253330663] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:08:48,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:08:48,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:08:48,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390093727] [2021-07-13 19:08:48,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:08:48,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:08:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:08:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1704, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:08:48,676 INFO L87 Difference]: Start difference. First operand 4065 states and 8337 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:50,274 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:08:50,680 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:08:51,061 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:08:51,406 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:08:51,696 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-13 19:08:51,994 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-13 19:08:52,288 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2021-07-13 19:08:52,694 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2021-07-13 19:08:53,037 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 99 [2021-07-13 19:08:53,381 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-07-13 19:08:53,634 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-13 19:08:53,954 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-13 19:08:54,337 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 88 [2021-07-13 19:08:54,683 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:08:55,025 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:08:55,741 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:08:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:08:58,703 INFO L93 Difference]: Finished difference Result 6908 states and 14232 transitions. [2021-07-13 19:08:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:08:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:08:58,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:08:58,710 INFO L225 Difference]: With dead ends: 6908 [2021-07-13 19:08:58,710 INFO L226 Difference]: Without dead ends: 6908 [2021-07-13 19:08:58,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 8528.2ms TimeCoverageRelationStatistics Valid=1815, Invalid=8691, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:08:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6908 states. [2021-07-13 19:08:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6908 to 4066. [2021-07-13 19:08:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 4063 states have (on average 2.0524243170071377) internal successors, (8339), 4065 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 8339 transitions. [2021-07-13 19:08:58,765 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 8339 transitions. Word has length 88 [2021-07-13 19:08:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:08:58,765 INFO L482 AbstractCegarLoop]: Abstraction has 4066 states and 8339 transitions. [2021-07-13 19:08:58,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:08:58,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 8339 transitions. [2021-07-13 19:08:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:08:58,767 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:08:58,767 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:08:58,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-13 19:08:58,767 INFO L430 AbstractCegarLoop]: === Iteration 81 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:08:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:08:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1122687694, now seen corresponding path program 27 times [2021-07-13 19:08:58,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:08:58,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435147926] [2021-07-13 19:08:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:08:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:00,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:00,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435147926] [2021-07-13 19:09:00,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435147926] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:00,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:00,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:09:00,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466778392] [2021-07-13 19:09:00,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:09:00,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:00,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:09:00,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1703, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:09:00,288 INFO L87 Difference]: Start difference. First operand 4066 states and 8339 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:01,941 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-13 19:09:02,369 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-13 19:09:02,789 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-13 19:09:03,161 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-13 19:09:03,497 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-13 19:09:03,783 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-07-13 19:09:04,074 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-13 19:09:04,468 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-13 19:09:04,751 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-07-13 19:09:05,055 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-13 19:09:05,404 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 99 [2021-07-13 19:09:05,686 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 90 [2021-07-13 19:09:06,027 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 92 [2021-07-13 19:09:06,544 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-13 19:09:06,907 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:09:07,329 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 63 [2021-07-13 19:09:07,499 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-13 19:09:07,653 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:09:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:10,795 INFO L93 Difference]: Finished difference Result 8439 states and 17406 transitions. [2021-07-13 19:09:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:09:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:09:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:10,804 INFO L225 Difference]: With dead ends: 8439 [2021-07-13 19:09:10,804 INFO L226 Difference]: Without dead ends: 8439 [2021-07-13 19:09:10,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 8554.9ms TimeCoverageRelationStatistics Valid=1822, Invalid=8684, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:09:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2021-07-13 19:09:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 4166. [2021-07-13 19:09:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4166 states, 4163 states have (on average 2.053326927696373) internal successors, (8548), 4165 states have internal predecessors, (8548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 8548 transitions. [2021-07-13 19:09:10,851 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 8548 transitions. Word has length 88 [2021-07-13 19:09:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:10,851 INFO L482 AbstractCegarLoop]: Abstraction has 4166 states and 8548 transitions. [2021-07-13 19:09:10,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 8548 transitions. [2021-07-13 19:09:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:09:10,868 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:10,868 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:10,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-13 19:09:10,868 INFO L430 AbstractCegarLoop]: === Iteration 82 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:10,869 INFO L82 PathProgramCache]: Analyzing trace with hash 526137016, now seen corresponding path program 28 times [2021-07-13 19:09:10,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:10,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540294009] [2021-07-13 19:09:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:11,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:11,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540294009] [2021-07-13 19:09:11,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540294009] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:11,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:11,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-13 19:09:11,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324021093] [2021-07-13 19:09:11,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-13 19:09:11,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:11,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-13 19:09:11,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-13 19:09:11,797 INFO L87 Difference]: Start difference. First operand 4166 states and 8548 transitions. Second operand has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:13,223 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-13 19:09:13,476 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-13 19:09:13,704 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-13 19:09:13,938 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-13 19:09:14,339 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-13 19:09:14,589 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-13 19:09:14,798 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-13 19:09:17,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:17,549 INFO L93 Difference]: Finished difference Result 7180 states and 14776 transitions. [2021-07-13 19:09:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-13 19:09:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:09:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:17,556 INFO L225 Difference]: With dead ends: 7180 [2021-07-13 19:09:17,557 INFO L226 Difference]: Without dead ends: 7180 [2021-07-13 19:09:17,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4630.3ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-13 19:09:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2021-07-13 19:09:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 3916. [2021-07-13 19:09:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3916 states, 3913 states have (on average 2.0536672629695887) internal successors, (8036), 3915 states have internal predecessors, (8036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 8036 transitions. [2021-07-13 19:09:17,609 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 8036 transitions. Word has length 88 [2021-07-13 19:09:17,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:17,609 INFO L482 AbstractCegarLoop]: Abstraction has 3916 states and 8036 transitions. [2021-07-13 19:09:17,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.5142857142857142) internal successors, (88), 35 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:17,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 8036 transitions. [2021-07-13 19:09:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:09:17,611 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:17,611 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:17,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-13 19:09:17,611 INFO L430 AbstractCegarLoop]: === Iteration 83 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash -510080302, now seen corresponding path program 29 times [2021-07-13 19:09:17,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:17,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376964822] [2021-07-13 19:09:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:19,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:19,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376964822] [2021-07-13 19:09:19,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376964822] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:19,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:19,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:09:19,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928091082] [2021-07-13 19:09:19,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:09:19,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:19,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:09:19,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1700, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:09:19,133 INFO L87 Difference]: Start difference. First operand 3916 states and 8036 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:20,530 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-13 19:09:20,768 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-13 19:09:21,154 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 19:09:21,507 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-13 19:09:21,769 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-07-13 19:09:22,125 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-13 19:09:22,401 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-13 19:09:22,672 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2021-07-13 19:09:23,065 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2021-07-13 19:09:23,392 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 102 [2021-07-13 19:09:23,703 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 95 [2021-07-13 19:09:23,937 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2021-07-13 19:09:24,238 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 98 [2021-07-13 19:09:24,589 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2021-07-13 19:09:24,912 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:09:25,247 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-13 19:09:25,481 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-07-13 19:09:26,167 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:09:26,381 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-13 19:09:29,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:29,071 INFO L93 Difference]: Finished difference Result 6170 states and 12698 transitions. [2021-07-13 19:09:29,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-13 19:09:29,071 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:09:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:29,077 INFO L225 Difference]: With dead ends: 6170 [2021-07-13 19:09:29,077 INFO L226 Difference]: Without dead ends: 6170 [2021-07-13 19:09:29,078 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 8538.5ms TimeCoverageRelationStatistics Valid=1865, Invalid=8847, Unknown=0, NotChecked=0, Total=10712 [2021-07-13 19:09:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-07-13 19:09:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 4023. [2021-07-13 19:09:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4023 states, 4020 states have (on average 2.0529850746268656) internal successors, (8253), 4022 states have internal predecessors, (8253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 8253 transitions. [2021-07-13 19:09:29,116 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 8253 transitions. Word has length 88 [2021-07-13 19:09:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:29,116 INFO L482 AbstractCegarLoop]: Abstraction has 4023 states and 8253 transitions. [2021-07-13 19:09:29,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 8253 transitions. [2021-07-13 19:09:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:09:29,119 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:29,119 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:29,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-13 19:09:29,119 INFO L430 AbstractCegarLoop]: === Iteration 84 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:29,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:29,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1505097634, now seen corresponding path program 30 times [2021-07-13 19:09:29,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:29,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005512830] [2021-07-13 19:09:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:30,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:30,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005512830] [2021-07-13 19:09:30,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005512830] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:30,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:30,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:09:30,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306910208] [2021-07-13 19:09:30,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:09:30,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:09:30,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1702, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:09:30,583 INFO L87 Difference]: Start difference. First operand 4023 states and 8253 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:32,021 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-13 19:09:32,272 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-13 19:09:32,672 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 19:09:33,042 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-13 19:09:33,419 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-07-13 19:09:33,727 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:09:34,054 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 81 [2021-07-13 19:09:34,336 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2021-07-13 19:09:34,731 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2021-07-13 19:09:35,068 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 99 [2021-07-13 19:09:35,394 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 92 [2021-07-13 19:09:35,649 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:09:35,960 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 97 [2021-07-13 19:09:36,344 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 88 [2021-07-13 19:09:36,659 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:09:37,008 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-13 19:09:37,755 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-13 19:09:37,965 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-13 19:09:40,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 19:09:40,842 INFO L93 Difference]: Finished difference Result 6358 states and 13089 transitions. [2021-07-13 19:09:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-13 19:09:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-07-13 19:09:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 19:09:40,849 INFO L225 Difference]: With dead ends: 6358 [2021-07-13 19:09:40,849 INFO L226 Difference]: Without dead ends: 6358 [2021-07-13 19:09:40,849 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8391.5ms TimeCoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2021-07-13 19:09:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-07-13 19:09:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 4024. [2021-07-13 19:09:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 4021 states have (on average 2.052971897537926) internal successors, (8255), 4023 states have internal predecessors, (8255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 8255 transitions. [2021-07-13 19:09:40,887 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 8255 transitions. Word has length 88 [2021-07-13 19:09:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 19:09:40,887 INFO L482 AbstractCegarLoop]: Abstraction has 4024 states and 8255 transitions. [2021-07-13 19:09:40,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 8255 transitions. [2021-07-13 19:09:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-13 19:09:40,889 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 19:09:40,889 INFO L508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 19:09:40,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-13 19:09:40,890 INFO L430 AbstractCegarLoop]: === Iteration 85 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 19:09:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 19:09:40,890 INFO L82 PathProgramCache]: Analyzing trace with hash -816304048, now seen corresponding path program 31 times [2021-07-13 19:09:40,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 19:09:40,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718666187] [2021-07-13 19:09:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 19:09:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 19:09:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 19:09:42,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 19:09:42,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718666187] [2021-07-13 19:09:42,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718666187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 19:09:42,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 19:09:42,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-13 19:09:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419407768] [2021-07-13 19:09:42,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-13 19:09:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 19:09:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-13 19:09:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2021-07-13 19:09:42,445 INFO L87 Difference]: Start difference. First operand 4024 states and 8255 transitions. Second operand has 43 states, 43 states have (on average 2.046511627906977) internal successors, (88), 43 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 19:09:43,809 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-13 19:09:44,038 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-13 19:09:44,421 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-13 19:09:44,798 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-13 19:09:45,139 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-07-13 19:09:45,403 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-13 19:09:45,669 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 81 [2021-07-13 19:09:45,959 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2021-07-13 19:09:46,325 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-13 19:09:46,591 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-13 19:09:46,887 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 97 [2021-07-13 19:09:47,221 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 99 [2021-07-13 19:09:47,484 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 90 [2021-07-13 19:09:47,801 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 92 [2021-07-13 19:09:48,307 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-13 19:09:48,651 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 Received shutdown request... [2021-07-13 19:09:49,095 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-07-13 19:09:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-13 19:09:49,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-13 19:09:49,095 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 19:09:49,096 INFO L301 ceAbstractionStarter]: Result for error location reader_fnThread1of1ForFork0 was TIMEOUT (1/2) [2021-07-13 19:09:49,097 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 19:09:49,097 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 19:09:49,097 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 19:09:49,097 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 19:09:49,097 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 19:09:49,097 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 19:09:49,097 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 19:09:49,097 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 19:09:49,097 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 19:09:49,100 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 142 transitions, 292 flow [2021-07-13 19:09:49,101 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-13 19:09:49,101 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was TIMEOUT (2/2) [2021-07-13 19:09:49,101 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 19:09:49,102 WARN L196 ceAbstractionStarter]: Timeout [2021-07-13 19:09:49,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 07:09:49 BasicIcfg [2021-07-13 19:09:49,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 19:09:49,103 INFO L168 Benchmark]: Toolchain (without parser) took 721895.21 ms. Allocated memory was 185.6 MB in the beginning and 647.0 MB in the end (delta: 461.4 MB). Free memory was 148.2 MB in the beginning and 416.6 MB in the end (delta: -268.4 MB). Peak memory consumption was 194.3 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 185.6 MB. Free memory is still 166.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.86 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 154.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 185.6 MB. Free memory was 154.7 MB in the beginning and 152.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: Boogie Preprocessor took 17.62 ms. Allocated memory is still 185.6 MB. Free memory was 152.1 MB in the beginning and 150.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: RCFGBuilder took 552.71 ms. Allocated memory is still 185.6 MB. Free memory was 150.5 MB in the beginning and 118.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L168 Benchmark]: TraceAbstraction took 720876.51 ms. Allocated memory was 185.6 MB in the beginning and 647.0 MB in the end (delta: 461.4 MB). Free memory was 117.5 MB in the beginning and 416.6 MB in the end (delta: -299.1 MB). Peak memory consumption was 163.9 MB. Max. memory is 8.0 GB. [2021-07-13 19:09:49,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 185.6 MB. Free memory is still 166.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 396.86 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 154.7 MB in the end (delta: -6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 185.6 MB. Free memory was 154.7 MB in the beginning and 152.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.62 ms. Allocated memory is still 185.6 MB. Free memory was 152.1 MB in the beginning and 150.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.71 ms. Allocated memory is still 185.6 MB. Free memory was 150.5 MB in the beginning and 118.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 720876.51 ms. Allocated memory was 185.6 MB in the beginning and 647.0 MB in the end (delta: 461.4 MB). Free memory was 117.5 MB in the beginning and 416.6 MB in the end (delta: -299.1 MB). Peak memory consumption was 163.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 837]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4024states) and FLOYD_HOARE automaton (currently 38 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 109 for 6ms.. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4024states) and FLOYD_HOARE automaton (currently 38 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 109 for 6ms.. - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4024states) and FLOYD_HOARE automaton (currently 38 states, 43 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 109 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: reader_fnThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 198 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 720772.7ms, OverallIterations: 85, TraceHistogramMax: 1, EmptinessCheckTime: 235.8ms, AutomataDifference: 653498.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31530 SDtfs, 119735 SDslu, 468718 SDs, 0 SdLazy, 249956 SolverSat, 4352 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103575.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7116 GetRequests, 279 SyntacticMatches, 96 SemanticMatches, 6740 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95134 ImplicationChecksByTransitivity, 573435.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4230occurred in iteration=69, InterpolantAutomatonStates: 4525, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3293.8ms AutomataMinimizationTime, 84 MinimizatonAttempts, 131810 StatesRemovedByMinimization, 83 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 125.0ms SsaConstructionTime, 788.2ms SatisfiabilityAnalysisTime, 62272.9ms InterpolantComputationTime, 7199 NumberOfCodeBlocks, 7199 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 7114 ConstructedInterpolants, 0 QuantifiedInterpolants, 119677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 85 InterpolantComputations, 85 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 198 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 3.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown