/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 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 16:55:06,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 16:55:06,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 16:55:06,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 16:55:06,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 16:55:06,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 16:55:06,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 16:55:06,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 16:55:06,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 16:55:06,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 16:55:06,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 16:55:06,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 16:55:06,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 16:55:06,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 16:55:06,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 16:55:06,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 16:55:06,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 16:55:06,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 16:55:06,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 16:55:06,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 16:55:06,262 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 [2021-07-09 16:55:06,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 16:55:06,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 16:55:06,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 16:55:06,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 16:55:06,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 16:55:06,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 16:55:06,277 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 16:55:06,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 16:55:06,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 16:55:06,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 16:55:06,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 16:55:06,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 16:55:06,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 16:55:06,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 16:55:06,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 16:55:06,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 16:55:06,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 16:55:06,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-09 16:55:06,541 INFO L275 PluginConnector]: CDTParser initialized [2021-07-09 16:55:06,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-07-09 16:55:06,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2de570a/64a6c29ea9264ff79bfb584ffd0da09e/FLAG34f280734 [2021-07-09 16:55:07,015 INFO L306 CDTParser]: Found 1 translation units. [2021-07-09 16:55:07,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2021-07-09 16:55:07,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2de570a/64a6c29ea9264ff79bfb584ffd0da09e/FLAG34f280734 [2021-07-09 16:55:07,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e2de570a/64a6c29ea9264ff79bfb584ffd0da09e [2021-07-09 16:55:07,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 16:55:07,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-09 16:55:07,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-09 16:55:07,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-09 16:55:07,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-09 16:55:07,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1136fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07, skipping insertion in model container [2021-07-09 16:55:07,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-09 16:55:07,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-09 16:55:07,190 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-09 16:55:07,415 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] [2021-07-09 16:55:07,421 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] [2021-07-09 16:55:07,422 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] [2021-07-09 16:55:07,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:55:07,436 INFO L203 MainTranslator]: Completed pre-run [2021-07-09 16:55:07,447 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-07-09 16:55:07,470 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] [2021-07-09 16:55:07,471 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] [2021-07-09 16:55:07,471 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] [2021-07-09 16:55:07,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-09 16:55:07,514 INFO L208 MainTranslator]: Completed translation [2021-07-09 16:55:07,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07 WrapperNode [2021-07-09 16:55:07,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-09 16:55:07,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 16:55:07,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 16:55:07,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 16:55:07,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 16:55:07,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 16:55:07,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 16:55:07,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 16:55:07,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (1/1) ... [2021-07-09 16:55:07,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 16:55:07,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 16:55:07,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 16:55:07,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 16:55:07,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (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 [2021-07-09 16:55:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2021-07-09 16:55:07,725 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2021-07-09 16:55:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-09 16:55:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-09 16:55:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-09 16:55:07,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-09 16:55:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-09 16:55:07,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 16:55:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 16:55:07,727 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 16:55:08,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 16:55:08,243 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-07-09 16:55:08,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:55:08 BoogieIcfgContainer [2021-07-09 16:55:08,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 16:55:08,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 16:55:08,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 16:55:08,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 16:55:08,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.07 04:55:07" (1/3) ... [2021-07-09 16:55:08,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aecdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:55:08, skipping insertion in model container [2021-07-09 16:55:08,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.07 04:55:07" (2/3) ... [2021-07-09 16:55:08,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aecdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 04:55:08, skipping insertion in model container [2021-07-09 16:55:08,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 04:55:08" (3/3) ... [2021-07-09 16:55:08,252 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2021-07-09 16:55:08,257 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 16:55:08,257 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 16:55:08,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-07-09 16:55:08,258 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,294 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,295 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,296 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,296 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,296 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,296 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,297 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,298 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,298 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,298 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,298 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,298 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,299 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,299 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,299 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,299 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,299 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,300 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,301 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,302 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,303 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,304 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,305 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,306 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,307 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,307 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,307 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,308 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,308 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,308 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,308 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,309 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,311 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,311 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,311 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,311 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,314 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,315 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,316 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,316 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,316 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,316 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,316 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,317 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,318 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,318 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,318 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,318 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,318 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,319 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,320 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,321 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,322 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,323 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,323 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,323 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,324 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,325 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,326 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,327 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,328 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,329 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,330 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,330 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,332 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,333 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,333 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,333 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,339 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,340 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,341 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,342 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,344 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,344 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,344 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,344 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,344 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~r~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_dequeue_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,345 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_empty_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#in~r.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~r.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~last~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_ring_dequeue_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,346 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_#t~pre17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,347 WARN L313 ript$VariableManager]: TermVariabe |reader_fnThread1of1ForFork0_ring_empty_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,347 WARN L313 ript$VariableManager]: TermVariabe reader_fnThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-09 16:55:08,352 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-07-09 16:55:08,368 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 16:55:08,388 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 16:55:08,388 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 16:55:08,388 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 16:55:08,388 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 16:55:08,388 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 16:55:08,388 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 16:55:08,388 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 16:55:08,388 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == reader_fnThread1of1ForFork0======== [2021-07-09 16:55:08,397 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 142 transitions, 292 flow [2021-07-09 16:55:08,470 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) [2021-07-09 16:55:08,479 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) [2021-07-09 16:55:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-07-09 16:55:08,485 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:08,486 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] [2021-07-09 16:55:08,486 INFO L430 AbstractCegarLoop]: === Iteration 1 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:08,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1950975089, now seen corresponding path program 1 times [2021-07-09 16:55:08,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:08,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003384360] [2021-07-09 16:55:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:08,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:08,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003384360] [2021-07-09 16:55:08,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003384360] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:08,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:08,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 16:55:08,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893713185] [2021-07-09 16:55:08,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-09 16:55:08,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:08,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-09 16:55:08,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-09 16:55:08,634 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) [2021-07-09 16:55:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:08,667 INFO L93 Difference]: Finished difference Result 2067 states and 4201 transitions. [2021-07-09 16:55:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 16:55:08,668 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 [2021-07-09 16:55:08,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:08,689 INFO L225 Difference]: With dead ends: 2067 [2021-07-09 16:55:08,689 INFO L226 Difference]: Without dead ends: 2067 [2021-07-09 16:55:08,690 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 [2021-07-09 16:55:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2021-07-09 16:55:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2067. [2021-07-09 16:55:08,804 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) [2021-07-09 16:55:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 4201 transitions. [2021-07-09 16:55:08,811 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 4201 transitions. Word has length 35 [2021-07-09 16:55:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:08,811 INFO L482 AbstractCegarLoop]: Abstraction has 2067 states and 4201 transitions. [2021-07-09 16:55:08,811 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) [2021-07-09 16:55:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 4201 transitions. [2021-07-09 16:55:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-07-09 16:55:08,812 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:08,812 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] [2021-07-09 16:55:08,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 16:55:08,813 INFO L430 AbstractCegarLoop]: === Iteration 2 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:08,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:08,815 INFO L82 PathProgramCache]: Analyzing trace with hash -350717078, now seen corresponding path program 1 times [2021-07-09 16:55:08,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:08,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481917492] [2021-07-09 16:55:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:08,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:08,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481917492] [2021-07-09 16:55:08,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481917492] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:08,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:08,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 16:55:08,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237514599] [2021-07-09 16:55:08,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 16:55:08,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:08,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 16:55:08,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:55:08,871 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) [2021-07-09 16:55:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:08,901 INFO L93 Difference]: Finished difference Result 3359 states and 6857 transitions. [2021-07-09 16:55:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 16:55:08,902 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 [2021-07-09 16:55:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:08,913 INFO L225 Difference]: With dead ends: 3359 [2021-07-09 16:55:08,913 INFO L226 Difference]: Without dead ends: 3359 [2021-07-09 16:55:08,914 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 16:55:08,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2021-07-09 16:55:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 2543. [2021-07-09 16:55:08,962 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) [2021-07-09 16:55:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 5201 transitions. [2021-07-09 16:55:08,970 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 5201 transitions. Word has length 36 [2021-07-09 16:55:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:08,970 INFO L482 AbstractCegarLoop]: Abstraction has 2543 states and 5201 transitions. [2021-07-09 16:55:08,971 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) [2021-07-09 16:55:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 5201 transitions. [2021-07-09 16:55:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-09 16:55:08,978 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:08,979 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] [2021-07-09 16:55:08,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 16:55:08,979 INFO L430 AbstractCegarLoop]: === Iteration 3 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash 225905160, now seen corresponding path program 1 times [2021-07-09 16:55:08,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:08,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15413356] [2021-07-09 16:55:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:09,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:09,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15413356] [2021-07-09 16:55:09,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15413356] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:09,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:09,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-07-09 16:55:09,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618945199] [2021-07-09 16:55:09,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-09 16:55:09,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:09,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-09 16:55:09,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-07-09 16:55:09,441 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) [2021-07-09 16:55:10,221 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-07-09 16:55:10,589 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-07-09 16:55:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:11,350 INFO L93 Difference]: Finished difference Result 2806 states and 5743 transitions. [2021-07-09 16:55:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 16:55:11,351 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 [2021-07-09 16:55:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:11,359 INFO L225 Difference]: With dead ends: 2806 [2021-07-09 16:55:11,359 INFO L226 Difference]: Without dead ends: 2691 [2021-07-09 16:55:11,360 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1502.8ms TimeCoverageRelationStatistics Valid=375, Invalid=1031, Unknown=0, NotChecked=0, Total=1406 [2021-07-09 16:55:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-07-09 16:55:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2499. [2021-07-09 16:55:11,402 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) [2021-07-09 16:55:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 5121 transitions. [2021-07-09 16:55:11,409 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 5121 transitions. Word has length 65 [2021-07-09 16:55:11,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:11,409 INFO L482 AbstractCegarLoop]: Abstraction has 2499 states and 5121 transitions. [2021-07-09 16:55:11,409 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) [2021-07-09 16:55:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 5121 transitions. [2021-07-09 16:55:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:11,412 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:11,412 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] [2021-07-09 16:55:11,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 16:55:11,413 INFO L430 AbstractCegarLoop]: === Iteration 4 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1391035745, now seen corresponding path program 1 times [2021-07-09 16:55:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77150532] [2021-07-09 16:55:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:12,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:12,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77150532] [2021-07-09 16:55:12,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77150532] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:12,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:12,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:12,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188405517] [2021-07-09 16:55:12,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:12,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:12,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:12,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:12,217 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) [2021-07-09 16:55:13,610 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-09 16:55:13,850 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-07-09 16:55:14,094 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-09 16:55:14,313 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-07-09 16:55:14,505 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-09 16:55:14,718 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-09 16:55:14,883 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-07-09 16:55:15,074 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 16:55:15,295 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-07-09 16:55:15,465 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-07-09 16:55:15,667 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-07-09 16:55:15,864 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-09 16:55:16,089 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 83 [2021-07-09 16:55:16,384 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-09 16:55:16,613 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-09 16:55:16,959 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2021-07-09 16:55:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:18,098 INFO L93 Difference]: Finished difference Result 3516 states and 7207 transitions. [2021-07-09 16:55:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 16:55:18,099 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 [2021-07-09 16:55:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:18,110 INFO L225 Difference]: With dead ends: 3516 [2021-07-09 16:55:18,110 INFO L226 Difference]: Without dead ends: 3516 [2021-07-09 16:55:18,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 4947.9ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 16:55:18,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-07-09 16:55:18,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 2675. [2021-07-09 16:55:18,153 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) [2021-07-09 16:55:18,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 5474 transitions. [2021-07-09 16:55:18,170 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 5474 transitions. Word has length 85 [2021-07-09 16:55:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:18,170 INFO L482 AbstractCegarLoop]: Abstraction has 2675 states and 5474 transitions. [2021-07-09 16:55:18,171 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) [2021-07-09 16:55:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 5474 transitions. [2021-07-09 16:55:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:18,174 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:18,174 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] [2021-07-09 16:55:18,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 16:55:18,174 INFO L430 AbstractCegarLoop]: === Iteration 5 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:18,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:18,175 INFO L82 PathProgramCache]: Analyzing trace with hash 278399633, now seen corresponding path program 2 times [2021-07-09 16:55:18,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:18,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514443346] [2021-07-09 16:55:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:18,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:18,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514443346] [2021-07-09 16:55:18,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514443346] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:18,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:18,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:18,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062415081] [2021-07-09 16:55:18,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:18,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:18,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:18,974 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) [2021-07-09 16:55:20,154 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-09 16:55:20,455 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-07-09 16:55:20,669 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-09 16:55:20,852 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2021-07-09 16:55:21,016 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2021-07-09 16:55:21,204 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-09 16:55:21,382 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-09 16:55:21,552 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2021-07-09 16:55:21,743 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 16:55:21,955 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 79 [2021-07-09 16:55:22,148 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-09 16:55:22,328 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 73 [2021-07-09 16:55:22,499 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 16:55:22,708 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:55:22,949 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-07-09 16:55:23,176 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-09 16:55:23,411 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-09 16:55:23,623 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-09 16:55:23,949 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2021-07-09 16:55:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:24,941 INFO L93 Difference]: Finished difference Result 3640 states and 7468 transitions. [2021-07-09 16:55:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 16:55:24,941 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 [2021-07-09 16:55:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:24,951 INFO L225 Difference]: With dead ends: 3640 [2021-07-09 16:55:24,952 INFO L226 Difference]: Without dead ends: 3640 [2021-07-09 16:55:24,953 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 5159.3ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 16:55:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-07-09 16:55:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 2684. [2021-07-09 16:55:24,996 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) [2021-07-09 16:55:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 5493 transitions. [2021-07-09 16:55:25,000 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 5493 transitions. Word has length 85 [2021-07-09 16:55:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:25,001 INFO L482 AbstractCegarLoop]: Abstraction has 2684 states and 5493 transitions. [2021-07-09 16:55:25,001 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) [2021-07-09 16:55:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 5493 transitions. [2021-07-09 16:55:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:25,004 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:25,004 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] [2021-07-09 16:55:25,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 16:55:25,004 INFO L430 AbstractCegarLoop]: === Iteration 6 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:25,004 INFO L82 PathProgramCache]: Analyzing trace with hash 337074681, now seen corresponding path program 3 times [2021-07-09 16:55:25,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:25,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027614891] [2021-07-09 16:55:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:25,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:25,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027614891] [2021-07-09 16:55:25,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027614891] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:25,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:25,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:25,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484463241] [2021-07-09 16:55:25,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:25,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:25,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:25,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:25,622 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) [2021-07-09 16:55:26,515 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-07-09 16:55:26,768 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-09 16:55:27,019 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 16:55:27,200 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:55:27,424 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:55:27,605 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-09 16:55:27,803 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-09 16:55:27,992 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:55:28,180 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-09 16:55:28,365 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:55:28,556 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 16:55:28,764 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 16:55:28,946 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 16:55:29,126 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 16:55:29,329 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:55:29,517 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-09 16:55:29,766 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-09 16:55:30,011 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:55:30,207 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 16:55:30,420 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 16:55:30,641 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-09 16:55:30,831 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:55:31,055 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:55:31,371 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 16:55:31,736 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 16:55:32,313 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 16:55:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:32,659 INFO L93 Difference]: Finished difference Result 3610 states and 7404 transitions. [2021-07-09 16:55:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 16:55:32,660 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 [2021-07-09 16:55:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:32,670 INFO L225 Difference]: With dead ends: 3610 [2021-07-09 16:55:32,671 INFO L226 Difference]: Without dead ends: 3610 [2021-07-09 16:55:32,672 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 6359.6ms TimeCoverageRelationStatistics Valid=1519, Invalid=4333, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 16:55:32,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2021-07-09 16:55:32,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 2685. [2021-07-09 16:55:32,714 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) [2021-07-09 16:55:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 5495 transitions. [2021-07-09 16:55:32,719 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 5495 transitions. Word has length 85 [2021-07-09 16:55:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:32,719 INFO L482 AbstractCegarLoop]: Abstraction has 2685 states and 5495 transitions. [2021-07-09 16:55:32,719 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) [2021-07-09 16:55:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 5495 transitions. [2021-07-09 16:55:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:32,722 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:32,722 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] [2021-07-09 16:55:32,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 16:55:32,723 INFO L430 AbstractCegarLoop]: === Iteration 7 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1109201329, now seen corresponding path program 4 times [2021-07-09 16:55:32,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:32,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011010077] [2021-07-09 16:55:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:33,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:33,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011010077] [2021-07-09 16:55:33,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011010077] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:33,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:33,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:33,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725521684] [2021-07-09 16:55:33,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:33,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:33,503 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) [2021-07-09 16:55:34,605 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-07-09 16:55:34,803 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 64 [2021-07-09 16:55:35,004 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-09 16:55:35,204 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:55:35,375 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-09 16:55:35,579 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-09 16:55:35,764 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-09 16:55:35,950 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2021-07-09 16:55:36,142 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 16:55:36,326 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-07-09 16:55:36,531 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 16:55:36,725 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-07-09 16:55:36,944 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-09 16:55:37,131 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-09 16:55:37,331 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 16:55:37,570 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-09 16:55:37,824 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2021-07-09 16:55:38,029 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-09 16:55:38,256 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 16:55:38,469 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-07-09 16:55:38,682 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-07-09 16:55:38,936 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 16:55:39,205 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-09 16:55:39,470 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-09 16:55:39,826 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-07-09 16:55:40,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:40,117 INFO L93 Difference]: Finished difference Result 3579 states and 7339 transitions. [2021-07-09 16:55:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 16:55:40,117 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 [2021-07-09 16:55:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:40,126 INFO L225 Difference]: With dead ends: 3579 [2021-07-09 16:55:40,126 INFO L226 Difference]: Without dead ends: 3579 [2021-07-09 16:55:40,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 6142.3ms TimeCoverageRelationStatistics Valid=1368, Invalid=3324, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 16:55:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-07-09 16:55:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 2841. [2021-07-09 16:55:40,163 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) [2021-07-09 16:55:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 5817 transitions. [2021-07-09 16:55:40,168 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 5817 transitions. Word has length 85 [2021-07-09 16:55:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:40,168 INFO L482 AbstractCegarLoop]: Abstraction has 2841 states and 5817 transitions. [2021-07-09 16:55:40,168 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) [2021-07-09 16:55:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 5817 transitions. [2021-07-09 16:55:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:40,171 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:40,171 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] [2021-07-09 16:55:40,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 16:55:40,171 INFO L430 AbstractCegarLoop]: === Iteration 8 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:40,171 INFO L82 PathProgramCache]: Analyzing trace with hash 442382817, now seen corresponding path program 5 times [2021-07-09 16:55:40,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:40,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569504770] [2021-07-09 16:55:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:40,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:40,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569504770] [2021-07-09 16:55:40,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569504770] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:40,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:40,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:40,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176169158] [2021-07-09 16:55:40,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:40,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:40,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:40,834 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) [2021-07-09 16:55:43,221 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-07-09 16:55:43,494 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-07-09 16:55:43,641 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-09 16:55:43,782 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-07-09 16:55:44,082 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-09 16:55:44,241 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-09 16:55:44,431 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-07-09 16:55:44,590 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:55:44,754 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-09 16:55:44,888 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-07-09 16:55:45,104 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2021-07-09 16:55:45,312 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 16:55:45,444 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-09 16:55:45,649 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 68 [2021-07-09 16:55:45,807 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 16:55:45,967 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-09 16:55:46,157 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:55:46,338 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2021-07-09 16:55:46,497 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-09 16:55:46,707 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-09 16:55:46,903 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:55:47,102 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:55:47,291 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 67 [2021-07-09 16:55:47,493 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2021-07-09 16:55:47,677 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:55:47,916 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-09 16:55:48,140 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-07-09 16:55:48,355 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-07-09 16:55:48,572 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-07-09 16:55:48,823 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-07-09 16:55:49,008 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 16:55:49,271 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 16:55:49,549 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 16:55:49,755 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2021-07-09 16:55:49,991 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-09 16:55:50,234 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-09 16:55:50,456 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 16:55:50,731 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2021-07-09 16:55:51,019 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-09 16:55:51,276 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2021-07-09 16:55:51,601 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2021-07-09 16:55:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:55:51,924 INFO L93 Difference]: Finished difference Result 3793 states and 7777 transitions. [2021-07-09 16:55:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 16:55:51,925 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 [2021-07-09 16:55:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:55:51,939 INFO L225 Difference]: With dead ends: 3793 [2021-07-09 16:55:51,940 INFO L226 Difference]: Without dead ends: 3793 [2021-07-09 16:55:51,941 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1560 ImplicationChecksByTransitivity, 10318.3ms TimeCoverageRelationStatistics Valid=2862, Invalid=7038, Unknown=0, NotChecked=0, Total=9900 [2021-07-09 16:55:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-07-09 16:55:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3055. [2021-07-09 16:55:51,984 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) [2021-07-09 16:55:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 6260 transitions. [2021-07-09 16:55:51,989 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 6260 transitions. Word has length 85 [2021-07-09 16:55:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:55:51,989 INFO L482 AbstractCegarLoop]: Abstraction has 3055 states and 6260 transitions. [2021-07-09 16:55:51,990 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) [2021-07-09 16:55:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 6260 transitions. [2021-07-09 16:55:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:55:51,994 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:55:51,994 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] [2021-07-09 16:55:51,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 16:55:51,994 INFO L430 AbstractCegarLoop]: === Iteration 9 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:55:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:55:51,994 INFO L82 PathProgramCache]: Analyzing trace with hash -171396979, now seen corresponding path program 6 times [2021-07-09 16:55:51,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:55:51,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526111347] [2021-07-09 16:55:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:55:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:55:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:55:52,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:55:52,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526111347] [2021-07-09 16:55:52,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526111347] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:55:52,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:55:52,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:55:52,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117028253] [2021-07-09 16:55:52,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:55:52,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:55:52,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:55:52,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:55:52,667 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) [2021-07-09 16:55:54,115 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2021-07-09 16:55:55,225 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2021-07-09 16:55:55,484 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-09 16:55:55,624 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-09 16:55:56,026 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-09 16:55:56,161 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-09 16:55:56,338 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2021-07-09 16:55:56,504 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:55:56,653 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-09 16:55:56,969 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-09 16:55:57,151 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 16:55:57,297 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-09 16:55:57,496 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:55:57,654 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 16:55:57,815 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-09 16:55:58,016 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:55:58,197 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2021-07-09 16:55:58,357 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-09 16:55:58,578 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:55:58,763 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-07-09 16:55:58,949 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:55:59,142 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-09 16:55:59,341 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 75 [2021-07-09 16:55:59,524 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 16:55:59,757 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 16:55:59,958 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-07-09 16:56:00,175 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:56:00,364 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2021-07-09 16:56:00,577 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 79 [2021-07-09 16:56:00,756 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-07-09 16:56:01,017 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2021-07-09 16:56:01,277 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-09 16:56:01,493 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-09 16:56:01,730 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 16:56:01,974 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-07-09 16:56:02,185 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2021-07-09 16:56:02,446 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-07-09 16:56:02,741 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-09 16:56:02,982 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2021-07-09 16:56:03,325 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-09 16:56:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:03,714 INFO L93 Difference]: Finished difference Result 3964 states and 8136 transitions. [2021-07-09 16:56:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 16:56:03,715 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 [2021-07-09 16:56:03,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:03,721 INFO L225 Difference]: With dead ends: 3964 [2021-07-09 16:56:03,721 INFO L226 Difference]: Without dead ends: 3964 [2021-07-09 16:56:03,722 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 10107.0ms TimeCoverageRelationStatistics Valid=2906, Invalid=7194, Unknown=0, NotChecked=0, Total=10100 [2021-07-09 16:56:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2021-07-09 16:56:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3109. [2021-07-09 16:56:03,758 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) [2021-07-09 16:56:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 6374 transitions. [2021-07-09 16:56:03,763 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 6374 transitions. Word has length 85 [2021-07-09 16:56:03,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:03,763 INFO L482 AbstractCegarLoop]: Abstraction has 3109 states and 6374 transitions. [2021-07-09 16:56:03,763 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) [2021-07-09 16:56:03,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 6374 transitions. [2021-07-09 16:56:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:03,766 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:03,766 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] [2021-07-09 16:56:03,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 16:56:03,766 INFO L430 AbstractCegarLoop]: === Iteration 10 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash 874507825, now seen corresponding path program 7 times [2021-07-09 16:56:03,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:03,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390440868] [2021-07-09 16:56:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:04,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:04,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390440868] [2021-07-09 16:56:04,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390440868] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:04,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:04,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:04,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283655526] [2021-07-09 16:56:04,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:04,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:04,325 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) [2021-07-09 16:56:05,365 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2021-07-09 16:56:05,706 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 60 [2021-07-09 16:56:06,521 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 16:56:07,170 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-09 16:56:07,324 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-09 16:56:07,724 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2021-07-09 16:56:07,857 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-07-09 16:56:08,044 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-09 16:56:08,206 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:56:08,353 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-09 16:56:08,660 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-07-09 16:56:08,805 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-09 16:56:08,984 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 16:56:09,113 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2021-07-09 16:56:09,304 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:56:09,464 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-09 16:56:09,629 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2021-07-09 16:56:09,881 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:56:10,061 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2021-07-09 16:56:10,220 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-09 16:56:10,433 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:56:10,621 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:56:10,815 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:56:11,011 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-09 16:56:11,220 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 16:56:11,408 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:56:11,666 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:56:11,865 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 16:56:12,073 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:56:12,263 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-09 16:56:12,484 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-09 16:56:12,662 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-09 16:56:12,919 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:56:13,165 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 16:56:13,378 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-09 16:56:13,611 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:56:13,853 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 16:56:14,068 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:56:14,334 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-09 16:56:14,618 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-09 16:56:14,858 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:56:15,195 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-09 16:56:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:15,490 INFO L93 Difference]: Finished difference Result 3742 states and 7662 transitions. [2021-07-09 16:56:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 16:56:15,491 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 [2021-07-09 16:56:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:15,496 INFO L225 Difference]: With dead ends: 3742 [2021-07-09 16:56:15,496 INFO L226 Difference]: Without dead ends: 3742 [2021-07-09 16:56:15,498 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1686 ImplicationChecksByTransitivity, 10370.2ms TimeCoverageRelationStatistics Valid=3036, Invalid=7470, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 16:56:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-07-09 16:56:15,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3083. [2021-07-09 16:56:15,534 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) [2021-07-09 16:56:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 6320 transitions. [2021-07-09 16:56:15,538 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 6320 transitions. Word has length 85 [2021-07-09 16:56:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:15,538 INFO L482 AbstractCegarLoop]: Abstraction has 3083 states and 6320 transitions. [2021-07-09 16:56:15,538 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) [2021-07-09 16:56:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 6320 transitions. [2021-07-09 16:56:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:15,541 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:15,541 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] [2021-07-09 16:56:15,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 16:56:15,542 INFO L430 AbstractCegarLoop]: === Iteration 11 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:15,542 INFO L82 PathProgramCache]: Analyzing trace with hash 147448899, now seen corresponding path program 8 times [2021-07-09 16:56:15,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:15,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563710936] [2021-07-09 16:56:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:16,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:16,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563710936] [2021-07-09 16:56:16,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563710936] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:16,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:16,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:16,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213641328] [2021-07-09 16:56:16,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:16,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:16,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:16,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:16,059 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) [2021-07-09 16:56:17,095 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-07-09 16:56:17,284 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:56:17,440 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 16:56:17,604 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:56:17,780 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 16:56:17,955 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:56:18,106 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:56:18,274 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:56:18,495 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:56:18,664 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 16:56:18,830 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:56:19,021 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 16:56:19,222 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-09 16:56:19,462 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:56:19,653 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:56:19,935 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:56:20,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:20,816 INFO L93 Difference]: Finished difference Result 4578 states and 9397 transitions. [2021-07-09 16:56:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 16:56:20,816 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 [2021-07-09 16:56:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:20,822 INFO L225 Difference]: With dead ends: 4578 [2021-07-09 16:56:20,823 INFO L226 Difference]: Without dead ends: 4578 [2021-07-09 16:56:20,823 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4308.5ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 16:56:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2021-07-09 16:56:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3198. [2021-07-09 16:56:20,860 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) [2021-07-09 16:56:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 6551 transitions. [2021-07-09 16:56:20,864 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 6551 transitions. Word has length 85 [2021-07-09 16:56:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:20,865 INFO L482 AbstractCegarLoop]: Abstraction has 3198 states and 6551 transitions. [2021-07-09 16:56:20,865 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) [2021-07-09 16:56:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 6551 transitions. [2021-07-09 16:56:20,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:20,868 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:20,868 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] [2021-07-09 16:56:20,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 16:56:20,868 INFO L430 AbstractCegarLoop]: === Iteration 12 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:20,868 INFO L82 PathProgramCache]: Analyzing trace with hash -965187213, now seen corresponding path program 9 times [2021-07-09 16:56:20,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:20,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132590076] [2021-07-09 16:56:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:21,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:21,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132590076] [2021-07-09 16:56:21,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132590076] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:21,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:21,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:21,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643761762] [2021-07-09 16:56:21,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:21,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:21,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:21,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:21,347 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) [2021-07-09 16:56:22,552 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:56:22,717 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:56:22,884 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 16:56:23,037 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-09 16:56:23,209 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 16:56:23,371 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:56:23,531 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:56:23,703 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:56:23,894 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:56:24,066 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 16:56:24,233 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:56:24,404 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 16:56:24,583 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 16:56:24,799 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 16:56:25,008 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-09 16:56:25,244 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:56:25,438 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:56:25,710 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:56:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:26,568 INFO L93 Difference]: Finished difference Result 4702 states and 9658 transitions. [2021-07-09 16:56:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 16:56:26,569 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 [2021-07-09 16:56:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:26,575 INFO L225 Difference]: With dead ends: 4702 [2021-07-09 16:56:26,575 INFO L226 Difference]: Without dead ends: 4702 [2021-07-09 16:56:26,575 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 4681.7ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 16:56:26,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2021-07-09 16:56:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 3207. [2021-07-09 16:56:26,612 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) [2021-07-09 16:56:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 6570 transitions. [2021-07-09 16:56:26,616 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 6570 transitions. Word has length 85 [2021-07-09 16:56:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:26,616 INFO L482 AbstractCegarLoop]: Abstraction has 3207 states and 6570 transitions. [2021-07-09 16:56:26,616 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) [2021-07-09 16:56:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 6570 transitions. [2021-07-09 16:56:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:26,619 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:26,620 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] [2021-07-09 16:56:26,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 16:56:26,620 INFO L430 AbstractCegarLoop]: === Iteration 13 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -906512165, now seen corresponding path program 10 times [2021-07-09 16:56:26,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:26,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561628525] [2021-07-09 16:56:26,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:27,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:27,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561628525] [2021-07-09 16:56:27,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561628525] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:27,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:27,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:27,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940875431] [2021-07-09 16:56:27,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:27,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:27,132 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) [2021-07-09 16:56:28,303 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-09 16:56:28,547 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 16:56:28,725 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:56:28,917 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:56:29,083 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-09 16:56:29,276 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-09 16:56:29,449 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:56:29,611 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-09 16:56:29,793 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:56:29,965 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 16:56:30,166 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 16:56:30,365 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 16:56:30,547 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 16:56:30,724 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:56:30,915 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-09 16:56:31,146 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-09 16:56:31,375 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:56:31,565 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 16:56:31,767 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 16:56:31,982 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-09 16:56:32,172 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:56:32,400 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:56:32,702 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 16:56:33,047 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 16:56:33,623 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 16:56:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:33,982 INFO L93 Difference]: Finished difference Result 4672 states and 9594 transitions. [2021-07-09 16:56:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 16:56:33,982 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 [2021-07-09 16:56:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:33,988 INFO L225 Difference]: With dead ends: 4672 [2021-07-09 16:56:33,988 INFO L226 Difference]: Without dead ends: 4672 [2021-07-09 16:56:33,988 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 6049.1ms TimeCoverageRelationStatistics Valid=1518, Invalid=4334, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 16:56:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2021-07-09 16:56:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 3208. [2021-07-09 16:56:34,026 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) [2021-07-09 16:56:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 6572 transitions. [2021-07-09 16:56:34,030 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 6572 transitions. Word has length 85 [2021-07-09 16:56:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:34,030 INFO L482 AbstractCegarLoop]: Abstraction has 3208 states and 6572 transitions. [2021-07-09 16:56:34,030 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) [2021-07-09 16:56:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 6572 transitions. [2021-07-09 16:56:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:34,034 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:34,034 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] [2021-07-09 16:56:34,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 16:56:34,034 INFO L430 AbstractCegarLoop]: === Iteration 14 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash -134385517, now seen corresponding path program 11 times [2021-07-09 16:56:34,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:34,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233765754] [2021-07-09 16:56:34,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:34,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:34,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233765754] [2021-07-09 16:56:34,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233765754] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:34,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:34,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:34,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190907511] [2021-07-09 16:56:34,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:34,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:34,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:34,706 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) [2021-07-09 16:56:35,545 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-09 16:56:35,797 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-09 16:56:36,016 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-09 16:56:36,200 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-09 16:56:36,394 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-09 16:56:36,569 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:56:36,772 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:56:36,969 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-09 16:56:37,140 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-09 16:56:37,338 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-09 16:56:37,526 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-09 16:56:37,744 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-09 16:56:37,965 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-09 16:56:38,153 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 16:56:38,344 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-07-09 16:56:38,550 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:56:38,799 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:56:39,037 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-07-09 16:56:39,235 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 16:56:39,456 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2021-07-09 16:56:39,681 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 16:56:39,901 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-09 16:56:40,163 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-09 16:56:40,445 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2021-07-09 16:56:40,705 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-07-09 16:56:41,087 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 90 [2021-07-09 16:56:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:41,390 INFO L93 Difference]: Finished difference Result 4641 states and 9529 transitions. [2021-07-09 16:56:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 16:56:41,390 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 [2021-07-09 16:56:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:41,396 INFO L225 Difference]: With dead ends: 4641 [2021-07-09 16:56:41,396 INFO L226 Difference]: Without dead ends: 4641 [2021-07-09 16:56:41,397 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 6185.9ms TimeCoverageRelationStatistics Valid=1367, Invalid=3325, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 16:56:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4641 states. [2021-07-09 16:56:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4641 to 3325. [2021-07-09 16:56:41,444 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) [2021-07-09 16:56:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 6816 transitions. [2021-07-09 16:56:41,449 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 6816 transitions. Word has length 85 [2021-07-09 16:56:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:41,449 INFO L482 AbstractCegarLoop]: Abstraction has 3325 states and 6816 transitions. [2021-07-09 16:56:41,449 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) [2021-07-09 16:56:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 6816 transitions. [2021-07-09 16:56:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:41,453 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:41,453 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] [2021-07-09 16:56:41,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 16:56:41,453 INFO L430 AbstractCegarLoop]: === Iteration 15 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash -801204029, now seen corresponding path program 12 times [2021-07-09 16:56:41,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:41,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969796748] [2021-07-09 16:56:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:42,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:42,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969796748] [2021-07-09 16:56:42,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969796748] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:42,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:42,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:42,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851250470] [2021-07-09 16:56:42,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:42,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:42,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:42,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:42,107 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) [2021-07-09 16:56:43,406 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-09 16:56:43,560 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:56:43,722 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:56:43,896 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-09 16:56:44,059 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:56:44,230 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-09 16:56:44,420 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:56:44,588 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-09 16:56:44,759 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-09 16:56:44,926 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:56:45,108 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-09 16:56:45,286 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-09 16:56:45,501 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:56:45,698 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 16:56:45,883 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:56:46,051 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-07-09 16:56:46,250 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-09 16:56:46,437 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 16:56:46,670 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 16:56:46,874 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 16:56:47,077 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-07-09 16:56:47,267 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2021-07-09 16:56:47,478 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-09 16:56:47,660 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:56:47,913 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 16:56:48,165 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-09 16:56:48,367 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-09 16:56:48,611 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 16:56:48,866 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:56:49,119 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 16:56:49,385 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 84 [2021-07-09 16:56:49,668 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-09 16:56:49,934 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2021-07-09 16:56:50,266 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-09 16:56:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:50,665 INFO L93 Difference]: Finished difference Result 4799 states and 9855 transitions. [2021-07-09 16:56:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 16:56:50,665 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 [2021-07-09 16:56:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:50,670 INFO L225 Difference]: With dead ends: 4799 [2021-07-09 16:56:50,670 INFO L226 Difference]: Without dead ends: 4799 [2021-07-09 16:56:50,671 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 7740.6ms TimeCoverageRelationStatistics Valid=1829, Invalid=4333, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 16:56:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-07-09 16:56:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3120. [2021-07-09 16:56:50,708 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) [2021-07-09 16:56:50,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 6394 transitions. [2021-07-09 16:56:50,712 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 6394 transitions. Word has length 85 [2021-07-09 16:56:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:50,712 INFO L482 AbstractCegarLoop]: Abstraction has 3120 states and 6394 transitions. [2021-07-09 16:56:50,712 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) [2021-07-09 16:56:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 6394 transitions. [2021-07-09 16:56:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:50,715 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:50,715 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] [2021-07-09 16:56:50,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 16:56:50,715 INFO L430 AbstractCegarLoop]: === Iteration 16 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1414983825, now seen corresponding path program 13 times [2021-07-09 16:56:50,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:50,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490605149] [2021-07-09 16:56:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:56:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:56:51,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:56:51,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490605149] [2021-07-09 16:56:51,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490605149] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:56:51,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:56:51,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:56:51,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800175392] [2021-07-09 16:56:51,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:56:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:56:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:56:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:56:51,309 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) [2021-07-09 16:56:52,194 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-09 16:56:52,369 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 16:56:52,721 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 16:56:52,866 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:56:53,028 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:56:53,200 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-09 16:56:53,372 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:56:53,545 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 16:56:53,741 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:56:53,925 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:56:54,089 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:56:54,255 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:56:54,447 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 16:56:54,624 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-09 16:56:54,845 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:56:55,031 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:56:55,219 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:56:55,397 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2021-07-09 16:56:55,593 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 16:56:55,779 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:56:56,009 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:56:56,207 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 16:56:56,425 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:56:56,616 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-09 16:56:56,829 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-09 16:56:57,009 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:56:57,258 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:56:57,529 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 16:56:57,732 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-09 16:56:57,966 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:56:58,206 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 16:56:58,421 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:56:58,695 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-09 16:56:58,974 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-09 16:56:59,212 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:56:59,543 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-09 16:56:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:56:59,916 INFO L93 Difference]: Finished difference Result 4970 states and 10214 transitions. [2021-07-09 16:56:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 16:56:59,916 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 [2021-07-09 16:56:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:56:59,921 INFO L225 Difference]: With dead ends: 4970 [2021-07-09 16:56:59,921 INFO L226 Difference]: Without dead ends: 4970 [2021-07-09 16:56:59,921 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 7790.9ms TimeCoverageRelationStatistics Valid=1873, Invalid=4447, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 16:56:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-07-09 16:56:59,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 3174. [2021-07-09 16:56:59,958 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) [2021-07-09 16:56:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 6508 transitions. [2021-07-09 16:56:59,962 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 6508 transitions. Word has length 85 [2021-07-09 16:56:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:56:59,962 INFO L482 AbstractCegarLoop]: Abstraction has 3174 states and 6508 transitions. [2021-07-09 16:56:59,962 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) [2021-07-09 16:56:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 6508 transitions. [2021-07-09 16:56:59,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:56:59,965 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:56:59,966 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] [2021-07-09 16:56:59,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 16:56:59,966 INFO L430 AbstractCegarLoop]: === Iteration 17 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:56:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:56:59,966 INFO L82 PathProgramCache]: Analyzing trace with hash -369079021, now seen corresponding path program 14 times [2021-07-09 16:56:59,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:56:59,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590719796] [2021-07-09 16:56:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:56:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:00,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:00,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590719796] [2021-07-09 16:57:00,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590719796] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:00,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:00,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:00,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790613782] [2021-07-09 16:57:00,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:00,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:00,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:00,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:00,503 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) [2021-07-09 16:57:01,927 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-09 16:57:02,475 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 16:57:02,976 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 58 [2021-07-09 16:57:03,346 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-09 16:57:03,516 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2021-07-09 16:57:03,911 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-09 16:57:04,307 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 16:57:04,473 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:57:04,637 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:57:04,949 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:57:05,123 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-09 16:57:05,277 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-07-09 16:57:05,581 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-09 16:57:05,768 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:57:05,967 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 16:57:06,098 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 64 [2021-07-09 16:57:06,292 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 16:57:06,452 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:57:06,672 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:57:06,856 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-09 16:57:07,060 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:57:07,235 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-09 16:57:07,432 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:57:07,603 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 16:57:07,803 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 16:57:07,994 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-09 16:57:08,218 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-09 16:57:08,466 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:57:08,672 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-09 16:57:08,882 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:57:09,092 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2021-07-09 16:57:09,315 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-09 16:57:09,523 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-09 16:57:09,814 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-09 16:57:10,031 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-09 16:57:10,288 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:57:10,504 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-09 16:57:10,738 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-09 16:57:10,929 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-09 16:57:11,247 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-09 16:57:11,541 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-09 16:57:11,769 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2021-07-09 16:57:12,038 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-09 16:57:12,324 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 81 [2021-07-09 16:57:12,559 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-09 16:57:12,873 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-07-09 16:57:13,199 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2021-07-09 16:57:13,514 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2021-07-09 16:57:13,878 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2021-07-09 16:57:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:14,237 INFO L93 Difference]: Finished difference Result 5040 states and 10336 transitions. [2021-07-09 16:57:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 16:57:14,238 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 [2021-07-09 16:57:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:14,243 INFO L225 Difference]: With dead ends: 5040 [2021-07-09 16:57:14,243 INFO L226 Difference]: Without dead ends: 5040 [2021-07-09 16:57:14,244 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 12362.8ms TimeCoverageRelationStatistics Valid=3726, Invalid=9156, Unknown=0, NotChecked=0, Total=12882 [2021-07-09 16:57:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-07-09 16:57:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 3090. [2021-07-09 16:57:14,277 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) [2021-07-09 16:57:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 6334 transitions. [2021-07-09 16:57:14,281 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 6334 transitions. Word has length 85 [2021-07-09 16:57:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:14,281 INFO L482 AbstractCegarLoop]: Abstraction has 3090 states and 6334 transitions. [2021-07-09 16:57:14,281 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) [2021-07-09 16:57:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 6334 transitions. [2021-07-09 16:57:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:14,284 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:14,284 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] [2021-07-09 16:57:14,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 16:57:14,284 INFO L430 AbstractCegarLoop]: === Iteration 18 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:14,285 INFO L82 PathProgramCache]: Analyzing trace with hash -190120765, now seen corresponding path program 15 times [2021-07-09 16:57:14,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:14,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956739629] [2021-07-09 16:57:14,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:14,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:14,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956739629] [2021-07-09 16:57:14,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956739629] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:14,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:14,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:14,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330283500] [2021-07-09 16:57:14,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:14,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:14,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:14,766 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) [2021-07-09 16:57:15,945 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:57:16,112 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 16:57:16,279 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:57:16,452 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 16:57:16,612 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:57:16,760 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:57:16,933 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:57:17,127 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:57:17,294 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 16:57:17,458 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:57:17,633 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 16:57:17,834 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-09 16:57:18,055 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:57:18,251 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:57:18,532 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:57:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:19,413 INFO L93 Difference]: Finished difference Result 4191 states and 8595 transitions. [2021-07-09 16:57:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 16:57:19,413 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 [2021-07-09 16:57:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:19,417 INFO L225 Difference]: With dead ends: 4191 [2021-07-09 16:57:19,417 INFO L226 Difference]: Without dead ends: 4191 [2021-07-09 16:57:19,418 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 4208.2ms TimeCoverageRelationStatistics Valid=1145, Invalid=3411, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 16:57:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-07-09 16:57:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3139. [2021-07-09 16:57:19,447 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) [2021-07-09 16:57:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 6433 transitions. [2021-07-09 16:57:19,451 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 6433 transitions. Word has length 85 [2021-07-09 16:57:19,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:19,451 INFO L482 AbstractCegarLoop]: Abstraction has 3139 states and 6433 transitions. [2021-07-09 16:57:19,451 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) [2021-07-09 16:57:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 6433 transitions. [2021-07-09 16:57:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:19,454 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:19,454 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] [2021-07-09 16:57:19,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 16:57:19,454 INFO L430 AbstractCegarLoop]: === Iteration 19 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1302756877, now seen corresponding path program 16 times [2021-07-09 16:57:19,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:19,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243126660] [2021-07-09 16:57:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:19,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:19,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243126660] [2021-07-09 16:57:19,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243126660] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:19,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:19,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:19,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549679789] [2021-07-09 16:57:19,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:19,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:19,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:19,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:19,948 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) [2021-07-09 16:57:21,263 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:57:21,429 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:57:21,613 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 16:57:21,769 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-09 16:57:21,958 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 16:57:22,123 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:57:22,281 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:57:22,455 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:57:22,658 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:57:22,832 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 16:57:23,005 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:57:23,171 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 16:57:23,352 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 16:57:23,573 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 16:57:23,802 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-09 16:57:24,025 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:57:24,225 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:57:24,501 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:57:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:25,361 INFO L93 Difference]: Finished difference Result 4315 states and 8856 transitions. [2021-07-09 16:57:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 16:57:25,362 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 [2021-07-09 16:57:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:25,366 INFO L225 Difference]: With dead ends: 4315 [2021-07-09 16:57:25,366 INFO L226 Difference]: Without dead ends: 4315 [2021-07-09 16:57:25,366 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 4761.4ms TimeCoverageRelationStatistics Valid=1264, Invalid=3706, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 16:57:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2021-07-09 16:57:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 3148. [2021-07-09 16:57:25,394 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) [2021-07-09 16:57:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 6452 transitions. [2021-07-09 16:57:25,398 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 6452 transitions. Word has length 85 [2021-07-09 16:57:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:25,398 INFO L482 AbstractCegarLoop]: Abstraction has 3148 states and 6452 transitions. [2021-07-09 16:57:25,398 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) [2021-07-09 16:57:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 6452 transitions. [2021-07-09 16:57:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:25,401 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:25,401 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] [2021-07-09 16:57:25,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 16:57:25,401 INFO L430 AbstractCegarLoop]: === Iteration 20 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1244081829, now seen corresponding path program 17 times [2021-07-09 16:57:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:25,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586501272] [2021-07-09 16:57:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:25,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:25,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586501272] [2021-07-09 16:57:25,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586501272] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:25,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:25,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:25,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250323107] [2021-07-09 16:57:25,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:25,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:25,875 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) [2021-07-09 16:57:26,966 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-09 16:57:27,180 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 16:57:27,351 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 16:57:27,537 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:57:27,703 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-09 16:57:27,884 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-09 16:57:28,056 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:57:28,223 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-09 16:57:28,403 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:57:28,579 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 16:57:28,780 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 16:57:28,964 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:57:29,146 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 16:57:29,331 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:57:29,524 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 16:57:29,754 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 16:57:29,973 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:57:30,161 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-09 16:57:30,365 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 16:57:30,579 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:57:30,767 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:57:30,978 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:57:31,267 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 16:57:31,608 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 16:57:32,141 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 16:57:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:32,461 INFO L93 Difference]: Finished difference Result 4285 states and 8792 transitions. [2021-07-09 16:57:32,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 16:57:32,461 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 [2021-07-09 16:57:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:32,465 INFO L225 Difference]: With dead ends: 4285 [2021-07-09 16:57:32,465 INFO L226 Difference]: Without dead ends: 4285 [2021-07-09 16:57:32,466 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 5940.7ms TimeCoverageRelationStatistics Valid=1518, Invalid=4334, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 16:57:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4285 states. [2021-07-09 16:57:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4285 to 3149. [2021-07-09 16:57:32,503 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) [2021-07-09 16:57:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 6454 transitions. [2021-07-09 16:57:32,507 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 6454 transitions. Word has length 85 [2021-07-09 16:57:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:32,507 INFO L482 AbstractCegarLoop]: Abstraction has 3149 states and 6454 transitions. [2021-07-09 16:57:32,507 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) [2021-07-09 16:57:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 6454 transitions. [2021-07-09 16:57:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:32,510 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:32,510 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] [2021-07-09 16:57:32,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 16:57:32,510 INFO L430 AbstractCegarLoop]: === Iteration 21 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:32,510 INFO L82 PathProgramCache]: Analyzing trace with hash -471955181, now seen corresponding path program 18 times [2021-07-09 16:57:32,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:32,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790037763] [2021-07-09 16:57:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:33,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:33,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790037763] [2021-07-09 16:57:33,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790037763] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:33,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:33,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:33,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414248022] [2021-07-09 16:57:33,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:33,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:33,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:33,158 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) [2021-07-09 16:57:34,224 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-09 16:57:34,435 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-09 16:57:34,615 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-09 16:57:34,813 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-09 16:57:34,980 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-09 16:57:35,168 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 16:57:35,350 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 16:57:35,534 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 16:57:35,723 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 16:57:35,914 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 74 [2021-07-09 16:57:36,120 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:57:36,315 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 16:57:36,500 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:57:36,677 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-09 16:57:36,889 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-09 16:57:37,130 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-09 16:57:37,352 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 16:57:37,539 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-09 16:57:37,752 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-09 16:57:37,977 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-09 16:57:38,184 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-07-09 16:57:38,427 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2021-07-09 16:57:38,697 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2021-07-09 16:57:38,957 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 16:57:39,307 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 16:57:39,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:39,592 INFO L93 Difference]: Finished difference Result 4254 states and 8727 transitions. [2021-07-09 16:57:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 16:57:39,592 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 [2021-07-09 16:57:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:39,596 INFO L225 Difference]: With dead ends: 4254 [2021-07-09 16:57:39,596 INFO L226 Difference]: Without dead ends: 4254 [2021-07-09 16:57:39,597 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 5936.8ms TimeCoverageRelationStatistics Valid=1367, Invalid=3325, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 16:57:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-07-09 16:57:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 3254. [2021-07-09 16:57:39,628 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) [2021-07-09 16:57:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 6674 transitions. [2021-07-09 16:57:39,632 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 6674 transitions. Word has length 85 [2021-07-09 16:57:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:39,632 INFO L482 AbstractCegarLoop]: Abstraction has 3254 states and 6674 transitions. [2021-07-09 16:57:39,632 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) [2021-07-09 16:57:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 6674 transitions. [2021-07-09 16:57:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:39,635 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:39,635 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] [2021-07-09 16:57:39,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 16:57:39,636 INFO L430 AbstractCegarLoop]: === Iteration 22 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1138773693, now seen corresponding path program 19 times [2021-07-09 16:57:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:39,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917502409] [2021-07-09 16:57:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:40,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:40,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917502409] [2021-07-09 16:57:40,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917502409] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:40,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:40,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:40,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360784667] [2021-07-09 16:57:40,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:40,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:40,258 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) [2021-07-09 16:57:41,341 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-09 16:57:41,525 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 16:57:41,695 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 16:57:41,872 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-09 16:57:42,034 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-09 16:57:42,223 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-09 16:57:42,401 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2021-07-09 16:57:42,598 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 16:57:42,775 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 16:57:42,949 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-07-09 16:57:43,137 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 16:57:43,323 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:57:43,534 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 16:57:43,723 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 16:57:43,910 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 16:57:44,091 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 16:57:44,291 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-09 16:57:44,475 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 16:57:44,704 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 16:57:44,935 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 16:57:45,128 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-09 16:57:45,361 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 16:57:45,616 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 16:57:45,818 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 16:57:46,063 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 16:57:46,325 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 16:57:46,560 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 16:57:46,868 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-09 16:57:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:47,232 INFO L93 Difference]: Finished difference Result 4450 states and 9136 transitions. [2021-07-09 16:57:47,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 16:57:47,232 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 [2021-07-09 16:57:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:47,237 INFO L225 Difference]: With dead ends: 4450 [2021-07-09 16:57:47,237 INFO L226 Difference]: Without dead ends: 4450 [2021-07-09 16:57:47,237 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 6434.1ms TimeCoverageRelationStatistics Valid=1503, Invalid=3609, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 16:57:47,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4450 states. [2021-07-09 16:57:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4450 to 3104. [2021-07-09 16:57:47,266 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) [2021-07-09 16:57:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 6362 transitions. [2021-07-09 16:57:47,270 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 6362 transitions. Word has length 85 [2021-07-09 16:57:47,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:47,270 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 6362 transitions. [2021-07-09 16:57:47,270 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) [2021-07-09 16:57:47,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 6362 transitions. [2021-07-09 16:57:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:47,273 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:47,273 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] [2021-07-09 16:57:47,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 16:57:47,273 INFO L430 AbstractCegarLoop]: === Iteration 23 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:47,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:47,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1752553489, now seen corresponding path program 20 times [2021-07-09 16:57:47,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:47,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534622681] [2021-07-09 16:57:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:47,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:47,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534622681] [2021-07-09 16:57:47,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534622681] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:47,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:47,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:47,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764193025] [2021-07-09 16:57:47,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:47,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:47,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:47,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:47,931 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) [2021-07-09 16:57:48,788 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-07-09 16:57:48,954 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-09 16:57:49,166 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:57:49,365 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 16:57:49,544 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-09 16:57:49,730 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 16:57:49,895 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-09 16:57:50,085 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-07-09 16:57:50,256 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 69 [2021-07-09 16:57:50,461 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-09 16:57:50,659 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 16:57:50,847 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-09 16:57:51,046 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 16:57:51,259 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:57:51,470 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 16:57:51,659 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 16:57:51,858 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 16:57:52,049 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 16:57:52,255 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-09 16:57:52,431 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 16:57:52,665 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 16:57:52,905 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 16:57:53,109 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-09 16:57:53,331 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 16:57:53,561 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 16:57:53,772 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 16:57:54,022 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 16:57:54,295 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 16:57:54,526 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 16:57:54,842 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-09 16:57:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:57:55,196 INFO L93 Difference]: Finished difference Result 4831 states and 9936 transitions. [2021-07-09 16:57:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 16:57:55,196 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 [2021-07-09 16:57:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:57:55,201 INFO L225 Difference]: With dead ends: 4831 [2021-07-09 16:57:55,201 INFO L226 Difference]: Without dead ends: 4831 [2021-07-09 16:57:55,201 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 6706.9ms TimeCoverageRelationStatistics Valid=1547, Invalid=3709, Unknown=0, NotChecked=0, Total=5256 [2021-07-09 16:57:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2021-07-09 16:57:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 3158. [2021-07-09 16:57:55,242 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) [2021-07-09 16:57:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 6476 transitions. [2021-07-09 16:57:55,246 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 6476 transitions. Word has length 85 [2021-07-09 16:57:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:57:55,246 INFO L482 AbstractCegarLoop]: Abstraction has 3158 states and 6476 transitions. [2021-07-09 16:57:55,246 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) [2021-07-09 16:57:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 6476 transitions. [2021-07-09 16:57:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:57:55,249 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:57:55,249 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] [2021-07-09 16:57:55,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 16:57:55,249 INFO L430 AbstractCegarLoop]: === Iteration 24 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:57:55,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:57:55,250 INFO L82 PathProgramCache]: Analyzing trace with hash -706648685, now seen corresponding path program 21 times [2021-07-09 16:57:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:57:55,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340750929] [2021-07-09 16:57:55,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:57:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:57:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:57:55,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:57:55,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340750929] [2021-07-09 16:57:55,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340750929] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:57:55,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:57:55,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:57:55,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351460115] [2021-07-09 16:57:55,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:57:55,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:57:55,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:57:55,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:57:55,787 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) [2021-07-09 16:57:57,844 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-09 16:57:58,573 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:57:59,087 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-07-09 16:57:59,227 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-09 16:57:59,611 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:57:59,784 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:58:00,104 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-09 16:58:00,252 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-07-09 16:58:00,552 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 16:58:00,740 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-09 16:58:00,924 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 16:58:01,233 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-09 16:58:01,392 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-07-09 16:58:01,583 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-07-09 16:58:01,749 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-09 16:58:01,948 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 16:58:02,122 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-09 16:58:02,332 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2021-07-09 16:58:02,496 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 16:58:02,694 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-07-09 16:58:02,890 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2021-07-09 16:58:03,111 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-09 16:58:03,292 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-09 16:58:03,527 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-09 16:58:03,764 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-09 16:58:03,992 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-09 16:58:04,195 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-09 16:58:04,415 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-07-09 16:58:04,615 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-09 16:58:04,888 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2021-07-09 16:58:05,116 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 16:58:05,329 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 16:58:05,572 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 16:58:05,785 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-07-09 16:58:06,019 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-09 16:58:06,220 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-09 16:58:06,525 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-09 16:58:06,812 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-07-09 16:58:07,063 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 16:58:07,332 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-09 16:58:07,615 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 16:58:07,847 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-09 16:58:08,144 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-07-09 16:58:08,469 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-09 16:58:08,762 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-09 16:58:09,081 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-09 16:58:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:09,372 INFO L93 Difference]: Finished difference Result 4901 states and 10058 transitions. [2021-07-09 16:58:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-09 16:58:09,372 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 [2021-07-09 16:58:09,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:09,377 INFO L225 Difference]: With dead ends: 4901 [2021-07-09 16:58:09,377 INFO L226 Difference]: Without dead ends: 4901 [2021-07-09 16:58:09,378 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2103 ImplicationChecksByTransitivity, 12531.8ms TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2021-07-09 16:58:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2021-07-09 16:58:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 3092. [2021-07-09 16:58:09,416 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) [2021-07-09 16:58:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 6338 transitions. [2021-07-09 16:58:09,419 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 6338 transitions. Word has length 85 [2021-07-09 16:58:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:09,419 INFO L482 AbstractCegarLoop]: Abstraction has 3092 states and 6338 transitions. [2021-07-09 16:58:09,420 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) [2021-07-09 16:58:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 6338 transitions. [2021-07-09 16:58:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:09,422 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:09,422 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] [2021-07-09 16:58:09,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 16:58:09,422 INFO L430 AbstractCegarLoop]: === Iteration 25 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:09,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:09,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1159334459, now seen corresponding path program 22 times [2021-07-09 16:58:09,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:09,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137893549] [2021-07-09 16:58:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:09,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:09,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137893549] [2021-07-09 16:58:09,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137893549] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:09,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:09,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 16:58:09,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875235899] [2021-07-09 16:58:09,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 16:58:09,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:09,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 16:58:09,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2021-07-09 16:58:09,842 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) [2021-07-09 16:58:11,725 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-09 16:58:12,086 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2021-07-09 16:58:12,822 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2021-07-09 16:58:13,327 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 65 [2021-07-09 16:58:13,879 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2021-07-09 16:58:14,177 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-07-09 16:58:14,334 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:58:14,476 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-07-09 16:58:14,774 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-09 16:58:14,939 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 16:58:15,141 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 16:58:15,275 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2021-07-09 16:58:15,444 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 16:58:15,627 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-07-09 16:58:15,789 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 68 [2021-07-09 16:58:15,974 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-09 16:58:16,168 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 16:58:16,354 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 16:58:16,506 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2021-07-09 16:58:16,699 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-09 16:58:16,906 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-09 16:58:17,091 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-09 16:58:17,263 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 73 [2021-07-09 16:58:17,488 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:58:17,666 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2021-07-09 16:58:17,867 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2021-07-09 16:58:18,085 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 16:58:18,300 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 16:58:18,521 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-09 16:58:18,748 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 16:58:18,993 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 16:58:19,187 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2021-07-09 16:58:19,379 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-09 16:58:19,582 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 16:58:19,816 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 16:58:20,028 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 16:58:20,348 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 16:58:20,582 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 16:58:20,825 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 16:58:21,056 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-09 16:58:21,288 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 16:58:21,574 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-09 16:58:21,834 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-09 16:58:22,130 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 16:58:22,453 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-09 16:58:22,772 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 16:58:23,137 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-09 16:58:23,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:23,433 INFO L93 Difference]: Finished difference Result 4556 states and 9354 transitions. [2021-07-09 16:58:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-09 16:58:23,434 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 [2021-07-09 16:58:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:23,438 INFO L225 Difference]: With dead ends: 4556 [2021-07-09 16:58:23,438 INFO L226 Difference]: Without dead ends: 4556 [2021-07-09 16:58:23,439 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 12247.7ms TimeCoverageRelationStatistics Valid=3819, Invalid=9291, Unknown=0, NotChecked=0, Total=13110 [2021-07-09 16:58:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2021-07-09 16:58:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 3101. [2021-07-09 16:58:23,466 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) [2021-07-09 16:58:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 6357 transitions. [2021-07-09 16:58:23,470 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 6357 transitions. Word has length 85 [2021-07-09 16:58:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:23,470 INFO L482 AbstractCegarLoop]: Abstraction has 3101 states and 6357 transitions. [2021-07-09 16:58:23,470 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) [2021-07-09 16:58:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 6357 transitions. [2021-07-09 16:58:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:23,472 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:23,472 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] [2021-07-09 16:58:23,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 16:58:23,473 INFO L430 AbstractCegarLoop]: === Iteration 26 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash -273769133, now seen corresponding path program 23 times [2021-07-09 16:58:23,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:23,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578290258] [2021-07-09 16:58:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:23,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:23,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:23,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578290258] [2021-07-09 16:58:23,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578290258] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:23,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:23,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 16:58:23,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875345558] [2021-07-09 16:58:23,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 16:58:23,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 16:58:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2021-07-09 16:58:23,886 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) [2021-07-09 16:58:25,675 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-09 16:58:26,333 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-07-09 16:58:26,579 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 16:58:26,842 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2021-07-09 16:58:27,743 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2021-07-09 16:58:28,044 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-09 16:58:28,213 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2021-07-09 16:58:28,352 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2021-07-09 16:58:28,613 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 16:58:28,777 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-09 16:58:28,926 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:58:29,090 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-07-09 16:58:29,410 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-07-09 16:58:29,576 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-09 16:58:29,729 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2021-07-09 16:58:29,921 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2021-07-09 16:58:30,097 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:58:30,251 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 16:58:30,468 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 16:58:30,654 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:58:30,841 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-09 16:58:31,032 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-09 16:58:31,228 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 16:58:31,412 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2021-07-09 16:58:31,652 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-09 16:58:31,851 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2021-07-09 16:58:32,063 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-09 16:58:32,252 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-09 16:58:32,462 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-09 16:58:32,635 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-09 16:58:32,893 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-09 16:58:33,143 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 16:58:33,358 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-09 16:58:33,598 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 16:58:33,841 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 16:58:34,058 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 16:58:34,310 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-09 16:58:34,587 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 16:58:34,860 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 16:58:35,217 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-09 16:58:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:35,439 INFO L93 Difference]: Finished difference Result 3996 states and 8185 transitions. [2021-07-09 16:58:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-09 16:58:35,440 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 [2021-07-09 16:58:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:35,444 INFO L225 Difference]: With dead ends: 3996 [2021-07-09 16:58:35,444 INFO L226 Difference]: Without dead ends: 3996 [2021-07-09 16:58:35,444 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1937 ImplicationChecksByTransitivity, 10605.2ms TimeCoverageRelationStatistics Valid=3410, Invalid=8362, Unknown=0, NotChecked=0, Total=11772 [2021-07-09 16:58:35,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2021-07-09 16:58:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 2895. [2021-07-09 16:58:35,491 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) [2021-07-09 16:58:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-09 16:58:35,494 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-09 16:58:35,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:35,494 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-09 16:58:35,494 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) [2021-07-09 16:58:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-09 16:58:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:35,496 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:35,496 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] [2021-07-09 16:58:35,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 16:58:35,496 INFO L430 AbstractCegarLoop]: === Iteration 27 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:35,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:35,497 INFO L82 PathProgramCache]: Analyzing trace with hash 889180321, now seen corresponding path program 24 times [2021-07-09 16:58:35,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:35,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527559628] [2021-07-09 16:58:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:36,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:36,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527559628] [2021-07-09 16:58:36,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527559628] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:36,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:36,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:58:36,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89407938] [2021-07-09 16:58:36,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:58:36,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:58:36,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:58:36,053 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) [2021-07-09 16:58:37,288 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:58:37,458 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 16:58:37,627 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:58:37,804 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 16:58:37,964 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:58:38,115 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:58:38,284 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:58:38,479 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:58:38,645 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 16:58:38,819 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:58:38,995 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 16:58:39,200 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-09 16:58:39,426 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:58:39,618 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:58:39,903 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:58:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:40,860 INFO L93 Difference]: Finished difference Result 4063 states and 8337 transitions. [2021-07-09 16:58:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 16:58:40,865 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 [2021-07-09 16:58:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:40,869 INFO L225 Difference]: With dead ends: 4063 [2021-07-09 16:58:40,869 INFO L226 Difference]: Without dead ends: 4063 [2021-07-09 16:58:40,869 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4265.7ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 16:58:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2021-07-09 16:58:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 3006. [2021-07-09 16:58:40,894 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) [2021-07-09 16:58:40,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 6154 transitions. [2021-07-09 16:58:40,897 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 6154 transitions. Word has length 85 [2021-07-09 16:58:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:40,897 INFO L482 AbstractCegarLoop]: Abstraction has 3006 states and 6154 transitions. [2021-07-09 16:58:40,897 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) [2021-07-09 16:58:40,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 6154 transitions. [2021-07-09 16:58:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:40,899 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:40,899 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] [2021-07-09 16:58:40,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 16:58:40,900 INFO L430 AbstractCegarLoop]: === Iteration 28 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:40,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:40,900 INFO L82 PathProgramCache]: Analyzing trace with hash -223455791, now seen corresponding path program 25 times [2021-07-09 16:58:40,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:40,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247963729] [2021-07-09 16:58:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:41,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:41,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247963729] [2021-07-09 16:58:41,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247963729] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:41,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:41,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:58:41,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708065510] [2021-07-09 16:58:41,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:58:41,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:41,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:58:41,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:58:41,456 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) [2021-07-09 16:58:42,702 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:58:42,883 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:58:43,053 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 16:58:43,206 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-09 16:58:43,383 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 16:58:43,553 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:58:43,706 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:58:43,874 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:58:44,063 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:58:44,240 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 16:58:44,406 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:58:44,569 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 16:58:44,747 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 16:58:44,958 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 16:58:45,167 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-09 16:58:45,385 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:58:45,579 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:58:45,853 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:58:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:46,739 INFO L93 Difference]: Finished difference Result 4187 states and 8598 transitions. [2021-07-09 16:58:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 16:58:46,739 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 [2021-07-09 16:58:46,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:46,743 INFO L225 Difference]: With dead ends: 4187 [2021-07-09 16:58:46,743 INFO L226 Difference]: Without dead ends: 4187 [2021-07-09 16:58:46,744 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4724.9ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 16:58:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2021-07-09 16:58:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 3015. [2021-07-09 16:58:46,768 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) [2021-07-09 16:58:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 6173 transitions. [2021-07-09 16:58:46,771 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 6173 transitions. Word has length 85 [2021-07-09 16:58:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:46,771 INFO L482 AbstractCegarLoop]: Abstraction has 3015 states and 6173 transitions. [2021-07-09 16:58:46,771 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) [2021-07-09 16:58:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 6173 transitions. [2021-07-09 16:58:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:46,773 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:46,773 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] [2021-07-09 16:58:46,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 16:58:46,774 INFO L430 AbstractCegarLoop]: === Iteration 29 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:46,774 INFO L82 PathProgramCache]: Analyzing trace with hash -164780743, now seen corresponding path program 26 times [2021-07-09 16:58:46,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:46,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922798014] [2021-07-09 16:58:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:47,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:47,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922798014] [2021-07-09 16:58:47,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922798014] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:47,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:47,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:58:47,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258949094] [2021-07-09 16:58:47,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:58:47,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:47,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:58:47,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:58:47,298 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) [2021-07-09 16:58:48,419 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-09 16:58:48,646 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-07-09 16:58:48,819 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-09 16:58:49,001 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-09 16:58:49,166 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 16:58:49,360 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-09 16:58:49,550 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-09 16:58:49,709 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-07-09 16:58:49,887 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:58:50,056 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 16:58:50,252 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 16:58:50,435 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 16:58:50,637 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 16:58:50,823 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:58:51,014 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-09 16:58:51,243 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 84 [2021-07-09 16:58:51,462 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:58:51,647 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 16:58:51,877 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 16:58:52,104 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-09 16:58:52,289 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:58:52,502 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:58:52,791 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 16:58:53,129 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 16:58:53,680 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 16:58:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:58:54,013 INFO L93 Difference]: Finished difference Result 4157 states and 8534 transitions. [2021-07-09 16:58:54,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 16:58:54,013 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 [2021-07-09 16:58:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:58:54,018 INFO L225 Difference]: With dead ends: 4157 [2021-07-09 16:58:54,018 INFO L226 Difference]: Without dead ends: 4157 [2021-07-09 16:58:54,018 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6058.2ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 16:58:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2021-07-09 16:58:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3016. [2021-07-09 16:58:54,043 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) [2021-07-09 16:58:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 6175 transitions. [2021-07-09 16:58:54,047 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 6175 transitions. Word has length 85 [2021-07-09 16:58:54,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:58:54,047 INFO L482 AbstractCegarLoop]: Abstraction has 3016 states and 6175 transitions. [2021-07-09 16:58:54,047 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) [2021-07-09 16:58:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 6175 transitions. [2021-07-09 16:58:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:58:54,049 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:58:54,049 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] [2021-07-09 16:58:54,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 16:58:54,049 INFO L430 AbstractCegarLoop]: === Iteration 30 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:58:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:58:54,050 INFO L82 PathProgramCache]: Analyzing trace with hash 607345905, now seen corresponding path program 27 times [2021-07-09 16:58:54,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:58:54,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561873155] [2021-07-09 16:58:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:58:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:58:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:58:54,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:58:54,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561873155] [2021-07-09 16:58:54,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561873155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:58:54,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:58:54,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:58:54,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455086794] [2021-07-09 16:58:54,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:58:54,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:58:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:58:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:58:54,725 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) [2021-07-09 16:58:55,885 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-09 16:58:56,120 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-09 16:58:56,307 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-09 16:58:56,505 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:58:56,679 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:58:56,878 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:58:57,063 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-09 16:58:57,234 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-09 16:58:57,436 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-09 16:58:57,616 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-09 16:58:57,850 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-09 16:58:58,047 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-09 16:58:58,235 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-09 16:58:58,420 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-07-09 16:58:58,625 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:58:58,881 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:58:59,111 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2021-07-09 16:58:59,307 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 16:58:59,527 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 82 [2021-07-09 16:58:59,747 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 16:58:59,969 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-09 16:59:00,220 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-09 16:59:00,498 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 91 [2021-07-09 16:59:00,759 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-07-09 16:59:01,124 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 90 [2021-07-09 16:59:01,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:01,457 INFO L93 Difference]: Finished difference Result 4126 states and 8469 transitions. [2021-07-09 16:59:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 16:59:01,457 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 [2021-07-09 16:59:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:01,461 INFO L225 Difference]: With dead ends: 4126 [2021-07-09 16:59:01,461 INFO L226 Difference]: Without dead ends: 4126 [2021-07-09 16:59:01,462 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 6110.6ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 16:59:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-07-09 16:59:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3133. [2021-07-09 16:59:01,487 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) [2021-07-09 16:59:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 6419 transitions. [2021-07-09 16:59:01,490 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 6419 transitions. Word has length 85 [2021-07-09 16:59:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:01,490 INFO L482 AbstractCegarLoop]: Abstraction has 3133 states and 6419 transitions. [2021-07-09 16:59:01,490 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) [2021-07-09 16:59:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 6419 transitions. [2021-07-09 16:59:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:01,493 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:01,493 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] [2021-07-09 16:59:01,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 16:59:01,493 INFO L430 AbstractCegarLoop]: === Iteration 31 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:01,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash -59472607, now seen corresponding path program 28 times [2021-07-09 16:59:01,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:01,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479328693] [2021-07-09 16:59:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:02,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:02,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479328693] [2021-07-09 16:59:02,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479328693] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:02,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:02,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:02,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220527936] [2021-07-09 16:59:02,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:02,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:02,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:02,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:02,141 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) [2021-07-09 16:59:03,433 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-07-09 16:59:03,580 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:59:03,745 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:59:03,914 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-09 16:59:04,102 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:59:04,260 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2021-07-09 16:59:04,453 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:59:04,627 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-09 16:59:04,795 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-07-09 16:59:04,977 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:59:05,152 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:59:05,343 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2021-07-09 16:59:05,557 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:59:05,742 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 16:59:05,924 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:59:06,091 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 67 [2021-07-09 16:59:06,289 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-09 16:59:06,474 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 16:59:06,709 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 16:59:06,915 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 16:59:07,117 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-07-09 16:59:07,307 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2021-07-09 16:59:07,516 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-09 16:59:07,695 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 74 [2021-07-09 16:59:07,954 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 16:59:08,203 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-09 16:59:08,404 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-09 16:59:08,634 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 16:59:08,872 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:59:09,088 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 16:59:09,356 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 84 [2021-07-09 16:59:09,636 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-09 16:59:09,875 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 81 [2021-07-09 16:59:10,204 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 86 [2021-07-09 16:59:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:10,608 INFO L93 Difference]: Finished difference Result 4284 states and 8795 transitions. [2021-07-09 16:59:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 16:59:10,608 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 [2021-07-09 16:59:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:10,612 INFO L225 Difference]: With dead ends: 4284 [2021-07-09 16:59:10,612 INFO L226 Difference]: Without dead ends: 4284 [2021-07-09 16:59:10,613 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 7690.6ms TimeCoverageRelationStatistics Valid=1828, Invalid=4334, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 16:59:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2021-07-09 16:59:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3333. [2021-07-09 16:59:10,639 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) [2021-07-09 16:59:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 6834 transitions. [2021-07-09 16:59:10,643 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 6834 transitions. Word has length 85 [2021-07-09 16:59:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:10,643 INFO L482 AbstractCegarLoop]: Abstraction has 3333 states and 6834 transitions. [2021-07-09 16:59:10,643 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) [2021-07-09 16:59:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 6834 transitions. [2021-07-09 16:59:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:10,646 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:10,646 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] [2021-07-09 16:59:10,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 16:59:10,646 INFO L430 AbstractCegarLoop]: === Iteration 32 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:10,646 INFO L82 PathProgramCache]: Analyzing trace with hash -673252403, now seen corresponding path program 29 times [2021-07-09 16:59:10,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:10,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131784621] [2021-07-09 16:59:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:11,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:11,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131784621] [2021-07-09 16:59:11,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131784621] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:11,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:11,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:11,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784256481] [2021-07-09 16:59:11,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:11,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:11,259 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) [2021-07-09 16:59:12,301 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 16:59:12,656 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 16:59:12,801 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:59:12,968 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:59:13,134 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-09 16:59:13,308 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:59:13,470 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 16:59:13,657 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:59:13,822 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:59:13,982 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:59:14,157 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:59:14,333 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 16:59:14,522 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-09 16:59:14,743 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:59:14,927 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:59:15,112 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:59:15,282 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-09 16:59:15,477 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 16:59:15,669 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:59:15,892 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:59:16,085 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 16:59:16,287 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:59:16,473 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-09 16:59:16,677 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-09 16:59:16,853 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:59:17,106 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:59:17,358 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 16:59:17,555 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 76 [2021-07-09 16:59:17,787 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:59:18,021 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 16:59:18,235 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 16:59:18,527 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2021-07-09 16:59:18,819 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2021-07-09 16:59:19,066 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 81 [2021-07-09 16:59:19,393 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-09 16:59:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:19,796 INFO L93 Difference]: Finished difference Result 4455 states and 9154 transitions. [2021-07-09 16:59:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 16:59:19,796 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 [2021-07-09 16:59:19,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:19,800 INFO L225 Difference]: With dead ends: 4455 [2021-07-09 16:59:19,800 INFO L226 Difference]: Without dead ends: 4455 [2021-07-09 16:59:19,801 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 7757.6ms TimeCoverageRelationStatistics Valid=1872, Invalid=4448, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 16:59:19,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2021-07-09 16:59:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 3387. [2021-07-09 16:59:19,829 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) [2021-07-09 16:59:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 6948 transitions. [2021-07-09 16:59:19,833 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 6948 transitions. Word has length 85 [2021-07-09 16:59:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:19,833 INFO L482 AbstractCegarLoop]: Abstraction has 3387 states and 6948 transitions. [2021-07-09 16:59:19,833 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) [2021-07-09 16:59:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 6948 transitions. [2021-07-09 16:59:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:19,835 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:19,835 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] [2021-07-09 16:59:19,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 16:59:19,836 INFO L430 AbstractCegarLoop]: === Iteration 33 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash 372652401, now seen corresponding path program 30 times [2021-07-09 16:59:19,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:19,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56007443] [2021-07-09 16:59:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:20,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:20,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56007443] [2021-07-09 16:59:20,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56007443] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:20,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:20,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:20,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675622383] [2021-07-09 16:59:20,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:20,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:20,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:20,424 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) [2021-07-09 16:59:21,388 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 16:59:21,673 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-09 16:59:21,830 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 16:59:21,976 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 16:59:22,134 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 16:59:22,304 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-09 16:59:22,472 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 66 [2021-07-09 16:59:22,630 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 16:59:22,783 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 16:59:22,963 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:59:23,128 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 16:59:23,292 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-09 16:59:23,467 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 16:59:23,660 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 16:59:23,834 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-09 16:59:24,043 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 16:59:24,228 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-09 16:59:24,413 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 16:59:24,585 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-09 16:59:24,795 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-09 16:59:24,983 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-09 16:59:25,219 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-09 16:59:25,421 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-09 16:59:25,622 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 16:59:25,812 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-09 16:59:26,022 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-09 16:59:26,211 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-09 16:59:26,458 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-09 16:59:26,699 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-09 16:59:26,902 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2021-07-09 16:59:27,133 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-09 16:59:27,378 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 81 [2021-07-09 16:59:27,592 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-09 16:59:27,846 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 84 [2021-07-09 16:59:28,120 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 87 [2021-07-09 16:59:28,353 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 81 [2021-07-09 16:59:28,693 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 86 [2021-07-09 16:59:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:29,004 INFO L93 Difference]: Finished difference Result 4233 states and 8680 transitions. [2021-07-09 16:59:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-09 16:59:29,004 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 [2021-07-09 16:59:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:29,008 INFO L225 Difference]: With dead ends: 4233 [2021-07-09 16:59:29,008 INFO L226 Difference]: Without dead ends: 4233 [2021-07-09 16:59:29,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 8082.0ms TimeCoverageRelationStatistics Valid=1975, Invalid=4667, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 16:59:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2021-07-09 16:59:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3375. [2021-07-09 16:59:29,038 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) [2021-07-09 16:59:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 6922 transitions. [2021-07-09 16:59:29,041 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 6922 transitions. Word has length 85 [2021-07-09 16:59:29,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:29,042 INFO L482 AbstractCegarLoop]: Abstraction has 3375 states and 6922 transitions. [2021-07-09 16:59:29,042 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) [2021-07-09 16:59:29,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 6922 transitions. [2021-07-09 16:59:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:29,044 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:29,044 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] [2021-07-09 16:59:29,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 16:59:29,044 INFO L430 AbstractCegarLoop]: === Iteration 34 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:29,045 INFO L82 PathProgramCache]: Analyzing trace with hash 551610657, now seen corresponding path program 31 times [2021-07-09 16:59:29,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:29,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478091464] [2021-07-09 16:59:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:29,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:29,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478091464] [2021-07-09 16:59:29,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478091464] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:29,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:29,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:29,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325346591] [2021-07-09 16:59:29,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:29,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:29,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:29,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:29,518 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) [2021-07-09 16:59:30,804 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:59:30,973 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 16:59:31,149 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:59:31,329 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 16:59:31,497 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:59:31,653 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:59:31,823 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:59:32,014 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:59:32,182 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 16:59:32,352 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:59:32,529 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 16:59:32,746 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-09 16:59:32,978 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:59:33,174 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:59:33,457 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:59:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:34,413 INFO L93 Difference]: Finished difference Result 4369 states and 8970 transitions. [2021-07-09 16:59:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 16:59:34,414 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 [2021-07-09 16:59:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:34,418 INFO L225 Difference]: With dead ends: 4369 [2021-07-09 16:59:34,418 INFO L226 Difference]: Without dead ends: 4369 [2021-07-09 16:59:34,418 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4242.6ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 16:59:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4369 states. [2021-07-09 16:59:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4369 to 3424. [2021-07-09 16:59:34,447 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) [2021-07-09 16:59:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 7021 transitions. [2021-07-09 16:59:34,451 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 7021 transitions. Word has length 85 [2021-07-09 16:59:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:34,451 INFO L482 AbstractCegarLoop]: Abstraction has 3424 states and 7021 transitions. [2021-07-09 16:59:34,451 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) [2021-07-09 16:59:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 7021 transitions. [2021-07-09 16:59:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:34,454 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:34,454 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] [2021-07-09 16:59:34,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 16:59:34,454 INFO L430 AbstractCegarLoop]: === Iteration 35 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash -561025455, now seen corresponding path program 32 times [2021-07-09 16:59:34,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:34,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733991870] [2021-07-09 16:59:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:34,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:34,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733991870] [2021-07-09 16:59:34,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733991870] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:34,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:34,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:34,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179871838] [2021-07-09 16:59:34,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:34,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:34,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:34,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:34,944 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) [2021-07-09 16:59:36,182 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 16:59:36,350 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 16:59:36,524 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 16:59:36,690 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-09 16:59:36,872 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 16:59:37,068 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 16:59:37,222 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 16:59:37,392 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 16:59:37,585 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 16:59:37,758 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 16:59:37,928 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 16:59:38,101 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 16:59:38,295 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 16:59:38,540 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 16:59:38,785 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-09 16:59:39,033 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 16:59:39,253 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 16:59:39,579 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 16:59:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:40,551 INFO L93 Difference]: Finished difference Result 4493 states and 9231 transitions. [2021-07-09 16:59:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 16:59:40,552 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 [2021-07-09 16:59:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:40,557 INFO L225 Difference]: With dead ends: 4493 [2021-07-09 16:59:40,557 INFO L226 Difference]: Without dead ends: 4493 [2021-07-09 16:59:40,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4939.1ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 16:59:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4493 states. [2021-07-09 16:59:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4493 to 3433. [2021-07-09 16:59:40,606 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) [2021-07-09 16:59:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 7040 transitions. [2021-07-09 16:59:40,610 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 7040 transitions. Word has length 85 [2021-07-09 16:59:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:40,611 INFO L482 AbstractCegarLoop]: Abstraction has 3433 states and 7040 transitions. [2021-07-09 16:59:40,611 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) [2021-07-09 16:59:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 7040 transitions. [2021-07-09 16:59:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:40,613 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:40,613 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] [2021-07-09 16:59:40,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 16:59:40,613 INFO L430 AbstractCegarLoop]: === Iteration 36 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:40,614 INFO L82 PathProgramCache]: Analyzing trace with hash -502350407, now seen corresponding path program 33 times [2021-07-09 16:59:40,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:40,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489223851] [2021-07-09 16:59:40,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:41,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:41,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489223851] [2021-07-09 16:59:41,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489223851] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:41,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:41,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:41,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853586413] [2021-07-09 16:59:41,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:41,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:41,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:41,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:41,401 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) [2021-07-09 16:59:42,318 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 55 [2021-07-09 16:59:42,597 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-07-09 16:59:42,862 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2021-07-09 16:59:43,056 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-07-09 16:59:43,265 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2021-07-09 16:59:43,454 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 16:59:43,663 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-09 16:59:43,862 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-09 16:59:44,044 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 66 [2021-07-09 16:59:44,262 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:59:44,456 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 16:59:44,681 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 16:59:44,886 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 16:59:45,091 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 16:59:45,267 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 16:59:45,454 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 16:59:45,715 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 16:59:45,936 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:59:46,124 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-09 16:59:46,322 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 16:59:46,538 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:59:46,725 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 16:59:46,946 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 16:59:47,237 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 16:59:47,577 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 16:59:48,122 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 16:59:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:48,486 INFO L93 Difference]: Finished difference Result 4463 states and 9167 transitions. [2021-07-09 16:59:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 16:59:48,486 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 [2021-07-09 16:59:48,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:48,491 INFO L225 Difference]: With dead ends: 4463 [2021-07-09 16:59:48,491 INFO L226 Difference]: Without dead ends: 4463 [2021-07-09 16:59:48,491 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6543.4ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 16:59:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2021-07-09 16:59:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3434. [2021-07-09 16:59:48,520 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) [2021-07-09 16:59:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 7042 transitions. [2021-07-09 16:59:48,524 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 7042 transitions. Word has length 85 [2021-07-09 16:59:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:48,524 INFO L482 AbstractCegarLoop]: Abstraction has 3434 states and 7042 transitions. [2021-07-09 16:59:48,524 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) [2021-07-09 16:59:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 7042 transitions. [2021-07-09 16:59:48,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:48,526 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:48,526 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] [2021-07-09 16:59:48,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 16:59:48,526 INFO L430 AbstractCegarLoop]: === Iteration 37 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash 269776241, now seen corresponding path program 34 times [2021-07-09 16:59:48,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:48,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075387070] [2021-07-09 16:59:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:49,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:49,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075387070] [2021-07-09 16:59:49,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075387070] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:49,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:49,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:49,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431171221] [2021-07-09 16:59:49,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:49,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:49,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:49,165 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) [2021-07-09 16:59:50,328 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-09 16:59:50,578 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-09 16:59:50,761 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 68 [2021-07-09 16:59:50,962 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 16:59:51,132 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 68 [2021-07-09 16:59:51,325 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:59:51,507 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-09 16:59:51,674 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-07-09 16:59:51,870 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 75 [2021-07-09 16:59:52,053 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 16:59:52,270 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 16:59:52,471 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 16:59:52,657 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 72 [2021-07-09 16:59:52,835 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 72 [2021-07-09 16:59:53,038 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-09 16:59:53,281 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 16:59:53,514 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-07-09 16:59:53,702 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 16:59:53,919 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 16:59:54,135 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-09 16:59:54,345 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 16:59:54,589 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-09 16:59:54,879 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 93 [2021-07-09 16:59:55,146 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 87 [2021-07-09 16:59:55,508 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 92 [2021-07-09 16:59:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 16:59:55,825 INFO L93 Difference]: Finished difference Result 4432 states and 9102 transitions. [2021-07-09 16:59:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 16:59:55,826 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 [2021-07-09 16:59:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 16:59:55,830 INFO L225 Difference]: With dead ends: 4432 [2021-07-09 16:59:55,830 INFO L226 Difference]: Without dead ends: 4432 [2021-07-09 16:59:55,831 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 5993.4ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 16:59:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2021-07-09 16:59:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3539. [2021-07-09 16:59:55,859 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) [2021-07-09 16:59:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3539 states to 3539 states and 7262 transitions. [2021-07-09 16:59:55,863 INFO L78 Accepts]: Start accepts. Automaton has 3539 states and 7262 transitions. Word has length 85 [2021-07-09 16:59:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 16:59:55,863 INFO L482 AbstractCegarLoop]: Abstraction has 3539 states and 7262 transitions. [2021-07-09 16:59:55,863 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) [2021-07-09 16:59:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3539 states and 7262 transitions. [2021-07-09 16:59:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 16:59:55,865 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 16:59:55,865 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] [2021-07-09 16:59:55,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 16:59:55,866 INFO L430 AbstractCegarLoop]: === Iteration 38 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 16:59:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 16:59:55,866 INFO L82 PathProgramCache]: Analyzing trace with hash -397042271, now seen corresponding path program 35 times [2021-07-09 16:59:55,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 16:59:55,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579605373] [2021-07-09 16:59:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 16:59:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 16:59:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 16:59:56,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 16:59:56,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579605373] [2021-07-09 16:59:56,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579605373] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 16:59:56,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 16:59:56,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 16:59:56,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753331425] [2021-07-09 16:59:56,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 16:59:56,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 16:59:56,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 16:59:56,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 16:59:56,489 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) [2021-07-09 16:59:57,577 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-09 16:59:57,766 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-09 16:59:57,940 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-09 16:59:58,118 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-09 16:59:58,275 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 16:59:58,465 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 16:59:58,637 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-09 16:59:58,853 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 16:59:59,030 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 16:59:59,206 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 67 [2021-07-09 16:59:59,395 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 16:59:59,575 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-09 16:59:59,785 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 16:59:59,993 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 17:00:00,213 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-09 17:00:00,399 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-09 17:00:00,602 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-07-09 17:00:00,785 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 17:00:01,020 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-09 17:00:01,265 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 17:00:01,462 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 17:00:01,704 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-09 17:00:01,961 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:00:02,222 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-09 17:00:02,496 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2021-07-09 17:00:02,807 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2021-07-09 17:00:03,044 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 17:00:03,378 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2021-07-09 17:00:03,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:03,815 INFO L93 Difference]: Finished difference Result 4628 states and 9511 transitions. [2021-07-09 17:00:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:00:03,816 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 [2021-07-09 17:00:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:03,821 INFO L225 Difference]: With dead ends: 4628 [2021-07-09 17:00:03,821 INFO L226 Difference]: Without dead ends: 4628 [2021-07-09 17:00:03,821 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 6694.2ms TimeCoverageRelationStatistics Valid=1502, Invalid=3610, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 17:00:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2021-07-09 17:00:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 3389. [2021-07-09 17:00:03,853 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) [2021-07-09 17:00:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 6950 transitions. [2021-07-09 17:00:03,857 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 6950 transitions. Word has length 85 [2021-07-09 17:00:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:03,857 INFO L482 AbstractCegarLoop]: Abstraction has 3389 states and 6950 transitions. [2021-07-09 17:00:03,857 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) [2021-07-09 17:00:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 6950 transitions. [2021-07-09 17:00:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:03,859 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:03,859 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] [2021-07-09 17:00:03,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 17:00:03,860 INFO L430 AbstractCegarLoop]: === Iteration 39 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1010822067, now seen corresponding path program 36 times [2021-07-09 17:00:03,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:03,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163052215] [2021-07-09 17:00:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:04,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:04,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163052215] [2021-07-09 17:00:04,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163052215] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:04,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:04,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:00:04,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255504806] [2021-07-09 17:00:04,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:00:04,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:04,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:00:04,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:00:04,568 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) [2021-07-09 17:00:05,329 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2021-07-09 17:00:05,510 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2021-07-09 17:00:05,659 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-09 17:00:05,865 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 17:00:06,143 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 17:00:06,381 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 64 [2021-07-09 17:00:06,575 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 17:00:06,841 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 17:00:07,058 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-07-09 17:00:07,277 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 17:00:07,498 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2021-07-09 17:00:07,735 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:00:07,986 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 73 [2021-07-09 17:00:08,243 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-09 17:00:08,508 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 17:00:08,770 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 74 [2021-07-09 17:00:09,078 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 17:00:09,370 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2021-07-09 17:00:09,607 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 17:00:09,872 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-07-09 17:00:10,098 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 80 [2021-07-09 17:00:10,279 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 17:00:10,563 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-09 17:00:10,875 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 17:00:11,098 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-07-09 17:00:11,374 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2021-07-09 17:00:11,621 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:00:11,894 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 83 [2021-07-09 17:00:12,199 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2021-07-09 17:00:12,488 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 88 [2021-07-09 17:00:12,765 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 82 [2021-07-09 17:00:13,132 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2021-07-09 17:00:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:13,547 INFO L93 Difference]: Finished difference Result 5009 states and 10311 transitions. [2021-07-09 17:00:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:00:13,548 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 [2021-07-09 17:00:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:13,553 INFO L225 Difference]: With dead ends: 5009 [2021-07-09 17:00:13,553 INFO L226 Difference]: Without dead ends: 5009 [2021-07-09 17:00:13,553 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 8176.1ms TimeCoverageRelationStatistics Valid=1546, Invalid=3710, Unknown=0, NotChecked=0, Total=5256 [2021-07-09 17:00:13,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2021-07-09 17:00:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 3443. [2021-07-09 17:00:13,584 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) [2021-07-09 17:00:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 7064 transitions. [2021-07-09 17:00:13,588 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 7064 transitions. Word has length 85 [2021-07-09 17:00:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:13,588 INFO L482 AbstractCegarLoop]: Abstraction has 3443 states and 7064 transitions. [2021-07-09 17:00:13,588 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) [2021-07-09 17:00:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 7064 transitions. [2021-07-09 17:00:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:13,590 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:13,590 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] [2021-07-09 17:00:13,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 17:00:13,590 INFO L430 AbstractCegarLoop]: === Iteration 40 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash 35082737, now seen corresponding path program 37 times [2021-07-09 17:00:13,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:13,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865614817] [2021-07-09 17:00:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:14,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:14,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865614817] [2021-07-09 17:00:14,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865614817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:14,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:14,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:00:14,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590746985] [2021-07-09 17:00:14,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:00:14,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:00:14,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:00:14,193 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) [2021-07-09 17:00:14,802 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2021-07-09 17:00:15,299 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-07-09 17:00:15,432 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-07-09 17:00:15,610 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2021-07-09 17:00:15,909 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 65 [2021-07-09 17:00:16,081 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-07-09 17:00:16,233 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 62 [2021-07-09 17:00:16,373 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2021-07-09 17:00:16,548 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 17:00:16,728 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2021-07-09 17:00:16,901 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 68 [2021-07-09 17:00:17,061 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-07-09 17:00:17,252 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 17:00:17,416 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2021-07-09 17:00:17,594 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:00:17,764 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-09 17:00:17,972 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 70 [2021-07-09 17:00:18,147 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-09 17:00:18,320 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 67 [2021-07-09 17:00:18,491 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-07-09 17:00:18,689 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2021-07-09 17:00:18,894 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-07-09 17:00:19,098 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-09 17:00:19,323 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:00:19,533 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 73 [2021-07-09 17:00:19,720 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2021-07-09 17:00:19,894 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 17:00:20,092 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-07-09 17:00:20,309 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2021-07-09 17:00:20,529 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-07-09 17:00:20,813 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 78 [2021-07-09 17:00:21,028 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 17:00:21,234 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 76 [2021-07-09 17:00:21,449 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-07-09 17:00:21,647 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 72 [2021-07-09 17:00:21,903 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2021-07-09 17:00:22,108 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-07-09 17:00:22,401 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 83 [2021-07-09 17:00:22,678 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 77 [2021-07-09 17:00:22,895 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-07-09 17:00:23,145 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 79 [2021-07-09 17:00:23,427 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-09 17:00:23,670 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 83 [2021-07-09 17:00:23,967 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2021-07-09 17:00:24,291 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 88 [2021-07-09 17:00:24,584 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 82 [2021-07-09 17:00:24,914 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2021-07-09 17:00:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:25,308 INFO L93 Difference]: Finished difference Result 4947 states and 10165 transitions. [2021-07-09 17:00:25,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-09 17:00:25,309 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 [2021-07-09 17:00:25,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:25,314 INFO L225 Difference]: With dead ends: 4947 [2021-07-09 17:00:25,314 INFO L226 Difference]: Without dead ends: 4947 [2021-07-09 17:00:25,315 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 10045.7ms TimeCoverageRelationStatistics Valid=2455, Invalid=5735, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 17:00:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2021-07-09 17:00:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 3377. [2021-07-09 17:00:25,348 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) [2021-07-09 17:00:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 6926 transitions. [2021-07-09 17:00:25,351 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 6926 transitions. Word has length 85 [2021-07-09 17:00:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:25,351 INFO L482 AbstractCegarLoop]: Abstraction has 3377 states and 6926 transitions. [2021-07-09 17:00:25,351 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) [2021-07-09 17:00:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 6926 transitions. [2021-07-09 17:00:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:25,353 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:25,354 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] [2021-07-09 17:00:25,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 17:00:25,354 INFO L430 AbstractCegarLoop]: === Iteration 41 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:25,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1901065881, now seen corresponding path program 38 times [2021-07-09 17:00:25,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:25,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470479667] [2021-07-09 17:00:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:25,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:25,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470479667] [2021-07-09 17:00:25,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470479667] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:25,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:25,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:00:25,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274338131] [2021-07-09 17:00:25,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:00:25,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:00:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:00:25,770 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) [2021-07-09 17:00:26,863 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2021-07-09 17:00:27,008 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2021-07-09 17:00:27,143 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-07-09 17:00:27,453 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-09 17:00:27,610 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-09 17:00:27,904 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 67 [2021-07-09 17:00:28,059 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-09 17:00:28,225 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-09 17:00:28,372 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-07-09 17:00:28,522 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:00:28,691 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:00:28,852 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-07-09 17:00:29,002 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2021-07-09 17:00:29,203 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-09 17:00:29,357 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2021-07-09 17:00:29,516 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-09 17:00:29,679 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-07-09 17:00:29,869 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-09 17:00:30,063 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:00:30,236 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-09 17:00:30,449 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:00:30,607 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 17:00:30,764 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 17:00:30,948 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-09 17:00:31,151 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 17:00:31,360 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 17:00:31,590 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-09 17:00:31,800 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 17:00:32,024 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 17:00:32,207 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-09 17:00:32,384 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 17:00:32,587 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 17:00:32,808 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 17:00:33,012 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 17:00:33,294 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 17:00:33,573 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 17:00:33,809 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 17:00:34,045 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-09 17:00:34,287 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:00:34,557 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-09 17:00:34,802 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-09 17:00:35,062 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 17:00:35,387 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-09 17:00:35,711 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 17:00:36,053 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-09 17:00:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:36,400 INFO L93 Difference]: Finished difference Result 4602 states and 9461 transitions. [2021-07-09 17:00:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-09 17:00:36,400 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 [2021-07-09 17:00:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:36,405 INFO L225 Difference]: With dead ends: 4602 [2021-07-09 17:00:36,405 INFO L226 Difference]: Without dead ends: 4602 [2021-07-09 17:00:36,406 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 9509.6ms TimeCoverageRelationStatistics Valid=2483, Invalid=5707, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 17:00:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2021-07-09 17:00:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 3386. [2021-07-09 17:00:36,436 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) [2021-07-09 17:00:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6945 transitions. [2021-07-09 17:00:36,440 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6945 transitions. Word has length 85 [2021-07-09 17:00:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:36,440 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 6945 transitions. [2021-07-09 17:00:36,440 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) [2021-07-09 17:00:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6945 transitions. [2021-07-09 17:00:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:36,442 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:36,442 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] [2021-07-09 17:00:36,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 17:00:36,442 INFO L430 AbstractCegarLoop]: === Iteration 42 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash 467962289, now seen corresponding path program 39 times [2021-07-09 17:00:36,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:36,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054592246] [2021-07-09 17:00:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:36,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:36,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054592246] [2021-07-09 17:00:36,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054592246] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:36,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:36,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:00:36,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744781159] [2021-07-09 17:00:36,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:00:36,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:36,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:00:36,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:00:36,899 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) [2021-07-09 17:00:38,738 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2021-07-09 17:00:39,413 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 17:00:39,905 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-07-09 17:00:40,420 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:00:40,962 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-09 17:00:41,107 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 66 [2021-07-09 17:00:41,373 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-09 17:00:41,697 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-09 17:00:41,996 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 17:00:42,153 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:00:42,305 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-09 17:00:42,606 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:00:42,743 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2021-07-09 17:00:42,963 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:00:43,162 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-09 17:00:43,481 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-07-09 17:00:43,636 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-07-09 17:00:43,837 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 17:00:44,006 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-09 17:00:44,184 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2021-07-09 17:00:44,357 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 17:00:44,555 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2021-07-09 17:00:44,714 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-09 17:00:44,900 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:00:45,111 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-07-09 17:00:45,314 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-09 17:00:45,550 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-09 17:00:45,743 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 17:00:45,942 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2021-07-09 17:00:46,134 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2021-07-09 17:00:46,351 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:00:46,548 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2021-07-09 17:00:46,811 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-09 17:00:47,017 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 80 [2021-07-09 17:00:47,248 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-09 17:00:47,447 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-09 17:00:47,687 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2021-07-09 17:00:47,871 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-07-09 17:00:48,154 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-09 17:00:48,420 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:00:48,632 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 17:00:48,875 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-09 17:00:49,155 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 17:00:49,386 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2021-07-09 17:00:49,678 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2021-07-09 17:00:50,016 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 17:00:50,322 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2021-07-09 17:00:50,704 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-09 17:00:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:50,950 INFO L93 Difference]: Finished difference Result 4423 states and 9067 transitions. [2021-07-09 17:00:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-07-09 17:00:50,951 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 [2021-07-09 17:00:50,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:50,955 INFO L225 Difference]: With dead ends: 4423 [2021-07-09 17:00:50,956 INFO L226 Difference]: Without dead ends: 4423 [2021-07-09 17:00:50,956 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 12832.8ms TimeCoverageRelationStatistics Valid=4205, Invalid=10315, Unknown=0, NotChecked=0, Total=14520 [2021-07-09 17:00:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2021-07-09 17:00:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 2895. [2021-07-09 17:00:50,982 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) [2021-07-09 17:00:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-09 17:00:50,985 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-09 17:00:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:50,985 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-09 17:00:50,985 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) [2021-07-09 17:00:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-09 17:00:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:50,986 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:50,987 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] [2021-07-09 17:00:50,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 17:00:50,987 INFO L430 AbstractCegarLoop]: === Iteration 43 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:50,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:50,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1994512579, now seen corresponding path program 40 times [2021-07-09 17:00:50,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:50,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610355398] [2021-07-09 17:00:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:51,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:51,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610355398] [2021-07-09 17:00:51,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610355398] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:51,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:51,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:00:51,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154633185] [2021-07-09 17:00:51,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:00:51,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:51,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:00:51,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:00:51,524 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) [2021-07-09 17:00:52,239 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-07-09 17:00:52,894 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 17:00:53,066 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 67 [2021-07-09 17:00:53,276 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:00:53,472 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 72 [2021-07-09 17:00:53,652 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 17:00:53,808 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 17:00:53,983 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:00:54,177 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 17:00:54,344 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:00:54,514 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 17:00:54,705 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 17:00:54,914 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2021-07-09 17:00:55,148 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 17:00:55,344 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 17:00:55,638 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 17:00:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:00:56,636 INFO L93 Difference]: Finished difference Result 3673 states and 7529 transitions. [2021-07-09 17:00:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 17:00:56,636 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 [2021-07-09 17:00:56,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:00:56,640 INFO L225 Difference]: With dead ends: 3673 [2021-07-09 17:00:56,640 INFO L226 Difference]: Without dead ends: 3673 [2021-07-09 17:00:56,640 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4482.2ms TimeCoverageRelationStatistics Valid=1144, Invalid=3412, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 17:00:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-07-09 17:00:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 2944. [2021-07-09 17:00:56,666 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) [2021-07-09 17:00:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 6030 transitions. [2021-07-09 17:00:56,669 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 6030 transitions. Word has length 85 [2021-07-09 17:00:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:00:56,669 INFO L482 AbstractCegarLoop]: Abstraction has 2944 states and 6030 transitions. [2021-07-09 17:00:56,669 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) [2021-07-09 17:00:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 6030 transitions. [2021-07-09 17:00:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:00:56,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:00:56,671 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] [2021-07-09 17:00:56,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 17:00:56,671 INFO L430 AbstractCegarLoop]: === Iteration 44 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:00:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:00:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash 881876467, now seen corresponding path program 41 times [2021-07-09 17:00:56,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:00:56,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791240902] [2021-07-09 17:00:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:00:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:00:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:00:57,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:00:57,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791240902] [2021-07-09 17:00:57,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791240902] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:00:57,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:00:57,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:00:57,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981216480] [2021-07-09 17:00:57,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:00:57,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:00:57,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:00:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:00:57,153 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) [2021-07-09 17:00:58,416 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 65 [2021-07-09 17:00:58,596 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:00:58,771 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 71 [2021-07-09 17:00:58,938 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 70 [2021-07-09 17:00:59,117 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:00:59,282 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 17:00:59,440 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-07-09 17:00:59,614 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:00:59,809 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2021-07-09 17:00:59,984 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:01:00,165 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 73 [2021-07-09 17:01:00,338 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 17:01:00,528 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 17:01:00,753 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 17:01:00,977 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-07-09 17:01:01,201 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2021-07-09 17:01:01,418 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2021-07-09 17:01:01,705 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2021-07-09 17:01:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:02,586 INFO L93 Difference]: Finished difference Result 3797 states and 7790 transitions. [2021-07-09 17:01:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 17:01:02,587 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 [2021-07-09 17:01:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:02,591 INFO L225 Difference]: With dead ends: 3797 [2021-07-09 17:01:02,591 INFO L226 Difference]: Without dead ends: 3797 [2021-07-09 17:01:02,591 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 4819.4ms TimeCoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 17:01:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-07-09 17:01:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 2953. [2021-07-09 17:01:02,615 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) [2021-07-09 17:01:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 6049 transitions. [2021-07-09 17:01:02,618 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 6049 transitions. Word has length 85 [2021-07-09 17:01:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:02,618 INFO L482 AbstractCegarLoop]: Abstraction has 2953 states and 6049 transitions. [2021-07-09 17:01:02,619 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) [2021-07-09 17:01:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 6049 transitions. [2021-07-09 17:01:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:02,620 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:02,620 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] [2021-07-09 17:01:02,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 17:01:02,621 INFO L430 AbstractCegarLoop]: === Iteration 45 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash 940551515, now seen corresponding path program 42 times [2021-07-09 17:01:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:02,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012909782] [2021-07-09 17:01:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:03,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:03,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012909782] [2021-07-09 17:01:03,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012909782] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:03,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:03,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:01:03,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767927244] [2021-07-09 17:01:03,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:01:03,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:01:03,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:01:03,141 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) [2021-07-09 17:01:04,335 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-07-09 17:01:04,547 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 17:01:04,720 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2021-07-09 17:01:04,904 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 17:01:05,069 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-07-09 17:01:05,252 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 75 [2021-07-09 17:01:05,439 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 17:01:05,606 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2021-07-09 17:01:05,794 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:01:05,966 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 74 [2021-07-09 17:01:06,169 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2021-07-09 17:01:06,355 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:01:06,542 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2021-07-09 17:01:06,725 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:01:06,931 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 17:01:07,165 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:01:07,392 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 17:01:07,595 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-09 17:01:07,797 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 17:01:08,013 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 17:01:08,202 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-07-09 17:01:08,425 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 17:01:08,718 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 83 [2021-07-09 17:01:09,063 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 17:01:09,624 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 17:01:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:09,968 INFO L93 Difference]: Finished difference Result 3767 states and 7726 transitions. [2021-07-09 17:01:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 17:01:09,968 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 [2021-07-09 17:01:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:09,972 INFO L225 Difference]: With dead ends: 3767 [2021-07-09 17:01:09,972 INFO L226 Difference]: Without dead ends: 3767 [2021-07-09 17:01:09,972 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6191.2ms TimeCoverageRelationStatistics Valid=1517, Invalid=4335, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 17:01:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-07-09 17:01:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2954. [2021-07-09 17:01:09,998 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) [2021-07-09 17:01:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 6051 transitions. [2021-07-09 17:01:10,003 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 6051 transitions. Word has length 85 [2021-07-09 17:01:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:10,003 INFO L482 AbstractCegarLoop]: Abstraction has 2954 states and 6051 transitions. [2021-07-09 17:01:10,004 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) [2021-07-09 17:01:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 6051 transitions. [2021-07-09 17:01:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:10,006 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:10,006 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] [2021-07-09 17:01:10,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 17:01:10,006 INFO L430 AbstractCegarLoop]: === Iteration 46 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:10,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1712678163, now seen corresponding path program 43 times [2021-07-09 17:01:10,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:10,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984543388] [2021-07-09 17:01:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:10,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:10,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984543388] [2021-07-09 17:01:10,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984543388] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:10,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:10,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:01:10,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43553756] [2021-07-09 17:01:10,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:01:10,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:10,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:01:10,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:01:10,640 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) [2021-07-09 17:01:11,707 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-09 17:01:11,902 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-09 17:01:12,080 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 68 [2021-07-09 17:01:12,266 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-09 17:01:12,446 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 68 [2021-07-09 17:01:12,633 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:01:12,814 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 73 [2021-07-09 17:01:12,985 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:01:13,174 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 75 [2021-07-09 17:01:13,347 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:01:13,562 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 78 [2021-07-09 17:01:13,767 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 17:01:13,950 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-07-09 17:01:14,126 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2021-07-09 17:01:14,323 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-09 17:01:14,575 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-09 17:01:14,818 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:01:15,012 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-09 17:01:15,226 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-09 17:01:15,441 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-09 17:01:15,649 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2021-07-09 17:01:15,891 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2021-07-09 17:01:16,163 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2021-07-09 17:01:16,442 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:01:16,800 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 17:01:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:17,085 INFO L93 Difference]: Finished difference Result 3736 states and 7661 transitions. [2021-07-09 17:01:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 17:01:17,085 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 [2021-07-09 17:01:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:17,089 INFO L225 Difference]: With dead ends: 3736 [2021-07-09 17:01:17,089 INFO L226 Difference]: Without dead ends: 3736 [2021-07-09 17:01:17,089 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 5973.5ms TimeCoverageRelationStatistics Valid=1366, Invalid=3326, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 17:01:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2021-07-09 17:01:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3059. [2021-07-09 17:01:17,112 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) [2021-07-09 17:01:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 6271 transitions. [2021-07-09 17:01:17,116 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 6271 transitions. Word has length 85 [2021-07-09 17:01:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:17,116 INFO L482 AbstractCegarLoop]: Abstraction has 3059 states and 6271 transitions. [2021-07-09 17:01:17,116 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) [2021-07-09 17:01:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 6271 transitions. [2021-07-09 17:01:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:17,118 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:17,118 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] [2021-07-09 17:01:17,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 17:01:17,118 INFO L430 AbstractCegarLoop]: === Iteration 47 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1045859651, now seen corresponding path program 44 times [2021-07-09 17:01:17,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:17,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494262943] [2021-07-09 17:01:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:17,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:17,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494262943] [2021-07-09 17:01:17,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494262943] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:17,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:17,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:01:17,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642425131] [2021-07-09 17:01:17,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:01:17,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:01:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:01:17,748 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) [2021-07-09 17:01:18,847 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2021-07-09 17:01:19,047 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 17:01:19,235 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 17:01:19,413 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 68 [2021-07-09 17:01:19,575 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-09 17:01:19,759 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2021-07-09 17:01:19,927 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-07-09 17:01:20,119 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:01:20,308 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 17:01:20,483 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 67 [2021-07-09 17:01:20,673 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 17:01:20,852 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:01:21,062 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 17:01:21,253 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 17:01:21,439 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 17:01:21,625 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 17:01:21,832 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-09 17:01:22,028 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 17:01:22,254 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 17:01:22,491 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 17:01:22,689 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-09 17:01:22,914 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 17:01:23,140 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 17:01:23,348 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 17:01:23,599 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 17:01:23,866 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 17:01:24,113 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:01:24,442 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-09 17:01:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:24,855 INFO L93 Difference]: Finished difference Result 3932 states and 8070 transitions. [2021-07-09 17:01:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:01:24,855 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 [2021-07-09 17:01:24,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:24,859 INFO L225 Difference]: With dead ends: 3932 [2021-07-09 17:01:24,859 INFO L226 Difference]: Without dead ends: 3932 [2021-07-09 17:01:24,860 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 6528.7ms TimeCoverageRelationStatistics Valid=1502, Invalid=3610, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 17:01:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2021-07-09 17:01:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3249. [2021-07-09 17:01:24,885 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) [2021-07-09 17:01:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 6666 transitions. [2021-07-09 17:01:24,889 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 6666 transitions. Word has length 85 [2021-07-09 17:01:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:24,889 INFO L482 AbstractCegarLoop]: Abstraction has 3249 states and 6666 transitions. [2021-07-09 17:01:24,889 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) [2021-07-09 17:01:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 6666 transitions. [2021-07-09 17:01:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:24,891 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:24,891 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] [2021-07-09 17:01:24,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 17:01:24,891 INFO L430 AbstractCegarLoop]: === Iteration 48 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash 432079855, now seen corresponding path program 45 times [2021-07-09 17:01:24,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:24,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371165389] [2021-07-09 17:01:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:25,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:25,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371165389] [2021-07-09 17:01:25,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371165389] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:25,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:25,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:01:25,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346924754] [2021-07-09 17:01:25,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:01:25,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:01:25,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:01:25,487 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) [2021-07-09 17:01:26,506 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-09 17:01:26,705 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 17:01:26,884 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 64 [2021-07-09 17:01:27,070 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-09 17:01:27,254 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 17:01:27,412 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 69 [2021-07-09 17:01:27,603 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-07-09 17:01:27,773 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2021-07-09 17:01:27,976 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-09 17:01:28,156 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 17:01:28,357 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-09 17:01:28,555 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 17:01:28,736 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:01:28,971 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 17:01:29,171 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 17:01:29,366 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 17:01:29,550 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 17:01:29,759 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 80 [2021-07-09 17:01:29,934 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-07-09 17:01:30,169 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 17:01:30,417 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 77 [2021-07-09 17:01:30,612 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2021-07-09 17:01:30,836 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 17:01:31,074 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2021-07-09 17:01:31,280 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-07-09 17:01:31,552 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 17:01:31,820 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 17:01:32,050 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:01:32,385 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2021-07-09 17:01:32,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:32,753 INFO L93 Difference]: Finished difference Result 4313 states and 8870 transitions. [2021-07-09 17:01:32,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:01:32,753 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 [2021-07-09 17:01:32,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:32,757 INFO L225 Difference]: With dead ends: 4313 [2021-07-09 17:01:32,757 INFO L226 Difference]: Without dead ends: 4313 [2021-07-09 17:01:32,758 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 6658.6ms TimeCoverageRelationStatistics Valid=1546, Invalid=3710, Unknown=0, NotChecked=0, Total=5256 [2021-07-09 17:01:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4313 states. [2021-07-09 17:01:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4313 to 3303. [2021-07-09 17:01:32,787 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) [2021-07-09 17:01:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 6780 transitions. [2021-07-09 17:01:32,791 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 6780 transitions. Word has length 85 [2021-07-09 17:01:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:32,791 INFO L482 AbstractCegarLoop]: Abstraction has 3303 states and 6780 transitions. [2021-07-09 17:01:32,791 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) [2021-07-09 17:01:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 6780 transitions. [2021-07-09 17:01:32,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:32,793 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:32,793 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] [2021-07-09 17:01:32,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 17:01:32,793 INFO L430 AbstractCegarLoop]: === Iteration 49 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1477984659, now seen corresponding path program 46 times [2021-07-09 17:01:32,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:32,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930666487] [2021-07-09 17:01:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:33,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:33,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930666487] [2021-07-09 17:01:33,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930666487] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:33,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:33,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:01:33,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948361882] [2021-07-09 17:01:33,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:01:33,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:01:33,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:01:33,365 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) [2021-07-09 17:01:34,448 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-09 17:01:34,630 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 65 [2021-07-09 17:01:34,793 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2021-07-09 17:01:34,995 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2021-07-09 17:01:35,172 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 66 [2021-07-09 17:01:35,322 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 70 [2021-07-09 17:01:35,501 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 70 [2021-07-09 17:01:35,666 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 71 [2021-07-09 17:01:35,868 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2021-07-09 17:01:36,040 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2021-07-09 17:01:36,245 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 74 [2021-07-09 17:01:36,433 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-09 17:01:36,617 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 69 [2021-07-09 17:01:36,826 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-07-09 17:01:37,012 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-09 17:01:37,245 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 78 [2021-07-09 17:01:37,440 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 17:01:37,648 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-07-09 17:01:37,836 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 72 [2021-07-09 17:01:38,053 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-09 17:01:38,237 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-09 17:01:38,473 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-09 17:01:38,706 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-07-09 17:01:38,914 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 17:01:39,138 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-09 17:01:39,369 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-07-09 17:01:39,595 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-09 17:01:39,859 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2021-07-09 17:01:40,134 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 88 [2021-07-09 17:01:40,371 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2021-07-09 17:01:40,706 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 87 [2021-07-09 17:01:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:41,065 INFO L93 Difference]: Finished difference Result 4091 states and 8396 transitions. [2021-07-09 17:01:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 17:01:41,065 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 [2021-07-09 17:01:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:41,070 INFO L225 Difference]: With dead ends: 4091 [2021-07-09 17:01:41,070 INFO L226 Difference]: Without dead ends: 4091 [2021-07-09 17:01:41,070 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 7024.9ms TimeCoverageRelationStatistics Valid=1640, Invalid=3910, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 17:01:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2021-07-09 17:01:41,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3301. [2021-07-09 17:01:41,098 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) [2021-07-09 17:01:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 6774 transitions. [2021-07-09 17:01:41,101 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 6774 transitions. Word has length 85 [2021-07-09 17:01:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:41,102 INFO L482 AbstractCegarLoop]: Abstraction has 3301 states and 6774 transitions. [2021-07-09 17:01:41,102 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) [2021-07-09 17:01:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 6774 transitions. [2021-07-09 17:01:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:41,104 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:41,104 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] [2021-07-09 17:01:41,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-09 17:01:41,104 INFO L430 AbstractCegarLoop]: === Iteration 50 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:41,105 INFO L82 PathProgramCache]: Analyzing trace with hash -950999493, now seen corresponding path program 47 times [2021-07-09 17:01:41,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:41,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179834497] [2021-07-09 17:01:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:41,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:41,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179834497] [2021-07-09 17:01:41,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179834497] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:41,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:41,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:01:41,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253072771] [2021-07-09 17:01:41,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:01:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:41,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:01:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:01:41,535 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) [2021-07-09 17:01:42,661 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2021-07-09 17:01:42,799 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 61 [2021-07-09 17:01:42,994 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2021-07-09 17:01:43,353 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2021-07-09 17:01:43,524 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-09 17:01:43,677 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:01:43,831 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:01:43,998 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-07-09 17:01:44,188 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-09 17:01:44,374 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:01:44,534 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:01:44,719 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-09 17:01:44,898 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2021-07-09 17:01:45,074 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 77 [2021-07-09 17:01:45,277 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:01:45,430 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2021-07-09 17:01:45,625 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2021-07-09 17:01:45,826 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 72 [2021-07-09 17:01:46,046 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 17:01:46,268 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2021-07-09 17:01:46,523 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-07-09 17:01:46,769 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-07-09 17:01:46,991 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 77 [2021-07-09 17:01:47,188 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-09 17:01:47,406 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 17:01:47,677 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 78 [2021-07-09 17:01:47,906 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 73 [2021-07-09 17:01:48,191 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2021-07-09 17:01:48,407 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 17:01:48,641 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2021-07-09 17:01:48,883 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 78 [2021-07-09 17:01:49,135 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2021-07-09 17:01:49,444 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-07-09 17:01:49,715 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 80 [2021-07-09 17:01:50,056 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 88 [2021-07-09 17:01:50,414 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2021-07-09 17:01:50,765 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2021-07-09 17:01:51,143 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2021-07-09 17:01:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:01:51,610 INFO L93 Difference]: Finished difference Result 4458 states and 9173 transitions. [2021-07-09 17:01:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 17:01:51,610 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 [2021-07-09 17:01:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:01:51,616 INFO L225 Difference]: With dead ends: 4458 [2021-07-09 17:01:51,616 INFO L226 Difference]: Without dead ends: 4458 [2021-07-09 17:01:51,616 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 8774.6ms TimeCoverageRelationStatistics Valid=2068, Invalid=4738, Unknown=0, NotChecked=0, Total=6806 [2021-07-09 17:01:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-07-09 17:01:51,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3310. [2021-07-09 17:01:51,673 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) [2021-07-09 17:01:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 6793 transitions. [2021-07-09 17:01:51,677 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 6793 transitions. Word has length 85 [2021-07-09 17:01:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:01:51,678 INFO L482 AbstractCegarLoop]: Abstraction has 3310 states and 6793 transitions. [2021-07-09 17:01:51,678 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) [2021-07-09 17:01:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 6793 transitions. [2021-07-09 17:01:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:01:51,680 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:01:51,681 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] [2021-07-09 17:01:51,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-09 17:01:51,681 INFO L430 AbstractCegarLoop]: === Iteration 51 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:01:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:01:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1910864211, now seen corresponding path program 48 times [2021-07-09 17:01:51,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:01:51,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486473807] [2021-07-09 17:01:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:01:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:01:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:01:52,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:01:52,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486473807] [2021-07-09 17:01:52,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486473807] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:01:52,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:01:52,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:01:52,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610545048] [2021-07-09 17:01:52,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:01:52,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:01:52,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:01:52,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:01:52,263 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) [2021-07-09 17:01:54,890 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-09 17:01:55,370 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-07-09 17:01:55,774 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:01:56,438 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2021-07-09 17:01:56,969 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-09 17:01:57,282 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:01:57,422 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-09 17:01:57,715 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-09 17:01:57,849 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:01:58,010 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-07-09 17:01:58,186 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-09 17:01:58,498 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-09 17:01:58,651 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:01:58,840 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-07-09 17:01:59,003 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-09 17:01:59,180 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 73 [2021-07-09 17:01:59,348 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-09 17:01:59,544 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-07-09 17:01:59,703 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-09 17:01:59,894 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2021-07-09 17:02:00,076 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:02:00,292 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-09 17:02:00,469 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-09 17:02:00,679 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 17:02:00,875 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:02:01,078 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2021-07-09 17:02:01,275 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-09 17:02:01,495 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 17:02:01,692 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2021-07-09 17:02:01,953 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-09 17:02:02,170 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2021-07-09 17:02:02,379 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-09 17:02:02,602 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-09 17:02:02,800 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-09 17:02:03,021 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-09 17:02:03,206 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-09 17:02:03,511 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2021-07-09 17:02:03,793 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:02:04,003 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 81 [2021-07-09 17:02:04,254 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:02:04,535 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 17:02:04,759 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:02:05,056 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-09 17:02:05,390 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 17:02:05,690 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:02:06,059 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-09 17:02:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:06,304 INFO L93 Difference]: Finished difference Result 4279 states and 8779 transitions. [2021-07-09 17:02:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-07-09 17:02:06,305 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 [2021-07-09 17:02:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:06,309 INFO L225 Difference]: With dead ends: 4279 [2021-07-09 17:02:06,309 INFO L226 Difference]: Without dead ends: 4279 [2021-07-09 17:02:06,310 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2435 ImplicationChecksByTransitivity, 12871.0ms TimeCoverageRelationStatistics Valid=4273, Invalid=10489, Unknown=0, NotChecked=0, Total=14762 [2021-07-09 17:02:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-07-09 17:02:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 2895. [2021-07-09 17:02:06,349 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) [2021-07-09 17:02:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-09 17:02:06,352 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-09 17:02:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:06,352 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-09 17:02:06,352 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) [2021-07-09 17:02:06,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-09 17:02:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:02:06,354 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:06,354 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] [2021-07-09 17:02:06,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-09 17:02:06,354 INFO L430 AbstractCegarLoop]: === Iteration 52 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1913044881, now seen corresponding path program 49 times [2021-07-09 17:02:06,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:06,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398098400] [2021-07-09 17:02:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:06,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:06,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398098400] [2021-07-09 17:02:06,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398098400] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:06,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:06,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:02:06,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793537090] [2021-07-09 17:02:06,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:02:06,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:06,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:02:06,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:02:06,773 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) [2021-07-09 17:02:07,809 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2021-07-09 17:02:07,979 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-07-09 17:02:08,218 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2021-07-09 17:02:08,372 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:02:08,563 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2021-07-09 17:02:08,769 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 70 [2021-07-09 17:02:08,967 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 74 [2021-07-09 17:02:09,171 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2021-07-09 17:02:09,364 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-09 17:02:09,559 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2021-07-09 17:02:09,769 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 77 [2021-07-09 17:02:09,941 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 81 [2021-07-09 17:02:10,146 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-07-09 17:02:10,334 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-07-09 17:02:10,567 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2021-07-09 17:02:10,790 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-07-09 17:02:10,994 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 76 [2021-07-09 17:02:11,198 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 80 [2021-07-09 17:02:11,427 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 84 [2021-07-09 17:02:11,646 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 78 [2021-07-09 17:02:11,883 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 86 [2021-07-09 17:02:12,138 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 89 [2021-07-09 17:02:12,385 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 83 [2021-07-09 17:02:12,725 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2021-07-09 17:02:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:13,039 INFO L93 Difference]: Finished difference Result 3744 states and 7688 transitions. [2021-07-09 17:02:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 17:02:13,039 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 [2021-07-09 17:02:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:13,043 INFO L225 Difference]: With dead ends: 3744 [2021-07-09 17:02:13,043 INFO L226 Difference]: Without dead ends: 3744 [2021-07-09 17:02:13,043 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 5567.6ms TimeCoverageRelationStatistics Valid=1283, Invalid=3139, Unknown=0, NotChecked=0, Total=4422 [2021-07-09 17:02:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-07-09 17:02:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3146. [2021-07-09 17:02:13,076 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) [2021-07-09 17:02:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 6453 transitions. [2021-07-09 17:02:13,079 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 6453 transitions. Word has length 85 [2021-07-09 17:02:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:13,079 INFO L482 AbstractCegarLoop]: Abstraction has 3146 states and 6453 transitions. [2021-07-09 17:02:13,079 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) [2021-07-09 17:02:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 6453 transitions. [2021-07-09 17:02:13,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:02:13,081 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:13,081 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] [2021-07-09 17:02:13,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-09 17:02:13,081 INFO L430 AbstractCegarLoop]: === Iteration 53 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:13,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:13,082 INFO L82 PathProgramCache]: Analyzing trace with hash 948818823, now seen corresponding path program 50 times [2021-07-09 17:02:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:13,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448760012] [2021-07-09 17:02:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:13,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:13,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448760012] [2021-07-09 17:02:13,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448760012] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:13,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:13,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-07-09 17:02:13,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410247049] [2021-07-09 17:02:13,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-09 17:02:13,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-09 17:02:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-07-09 17:02:13,502 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) [2021-07-09 17:02:15,836 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 67 [2021-07-09 17:02:16,185 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2021-07-09 17:02:16,646 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-07-09 17:02:17,019 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2021-07-09 17:02:18,050 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-07-09 17:02:18,353 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2021-07-09 17:02:18,505 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:02:18,645 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-09 17:02:18,914 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:02:19,103 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-07-09 17:02:19,253 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 72 [2021-07-09 17:02:19,426 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2021-07-09 17:02:19,728 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:02:19,917 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 76 [2021-07-09 17:02:20,081 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-09 17:02:20,258 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2021-07-09 17:02:20,448 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 78 [2021-07-09 17:02:20,624 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-09 17:02:20,777 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 70 [2021-07-09 17:02:20,984 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:02:21,173 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 81 [2021-07-09 17:02:21,362 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-07-09 17:02:21,532 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-09 17:02:21,762 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:02:21,935 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2021-07-09 17:02:22,142 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-09 17:02:22,370 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:02:22,577 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-07-09 17:02:22,795 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2021-07-09 17:02:23,016 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-07-09 17:02:23,250 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-07-09 17:02:23,444 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-07-09 17:02:23,641 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-07-09 17:02:23,830 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-09 17:02:24,060 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:02:24,267 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2021-07-09 17:02:24,547 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-09 17:02:24,792 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 84 [2021-07-09 17:02:25,028 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 17:02:25,257 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:02:25,467 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:02:25,732 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:02:25,984 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 17:02:26,249 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-09 17:02:26,584 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-07-09 17:02:26,899 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:02:27,256 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 91 [2021-07-09 17:02:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:27,547 INFO L93 Difference]: Finished difference Result 4010 states and 8229 transitions. [2021-07-09 17:02:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-09 17:02:27,548 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 [2021-07-09 17:02:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:27,552 INFO L225 Difference]: With dead ends: 4010 [2021-07-09 17:02:27,552 INFO L226 Difference]: Without dead ends: 4010 [2021-07-09 17:02:27,553 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 12825.5ms TimeCoverageRelationStatistics Valid=4334, Invalid=10672, Unknown=0, NotChecked=0, Total=15006 [2021-07-09 17:02:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2021-07-09 17:02:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 2895. [2021-07-09 17:02:27,577 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) [2021-07-09 17:02:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 5931 transitions. [2021-07-09 17:02:27,580 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 5931 transitions. Word has length 85 [2021-07-09 17:02:27,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:27,580 INFO L482 AbstractCegarLoop]: Abstraction has 2895 states and 5931 transitions. [2021-07-09 17:02:27,580 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) [2021-07-09 17:02:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 5931 transitions. [2021-07-09 17:02:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-07-09 17:02:27,582 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:27,582 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] [2021-07-09 17:02:27,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-09 17:02:27,583 INFO L430 AbstractCegarLoop]: === Iteration 54 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:27,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1688111427, now seen corresponding path program 51 times [2021-07-09 17:02:27,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:27,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224705079] [2021-07-09 17:02:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:28,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:28,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224705079] [2021-07-09 17:02:28,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224705079] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:28,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:28,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-07-09 17:02:28,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214790187] [2021-07-09 17:02:28,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-09 17:02:28,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:28,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-09 17:02:28,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2021-07-09 17:02:28,130 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) [2021-07-09 17:02:30,101 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 59 [2021-07-09 17:02:30,333 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-07-09 17:02:31,097 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2021-07-09 17:02:31,336 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:02:32,487 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2021-07-09 17:02:32,756 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2021-07-09 17:02:32,911 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-09 17:02:33,065 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2021-07-09 17:02:33,205 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2021-07-09 17:02:33,482 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:02:33,654 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2021-07-09 17:02:33,821 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-07-09 17:02:33,993 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-07-09 17:02:34,305 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 75 [2021-07-09 17:02:34,473 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:02:34,630 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-07-09 17:02:34,815 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2021-07-09 17:02:34,993 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2021-07-09 17:02:35,149 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-07-09 17:02:35,370 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2021-07-09 17:02:35,562 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 79 [2021-07-09 17:02:35,746 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-07-09 17:02:35,937 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 74 [2021-07-09 17:02:36,139 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2021-07-09 17:02:36,331 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-07-09 17:02:36,592 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-07-09 17:02:36,798 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-07-09 17:02:37,008 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-07-09 17:02:37,202 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-07-09 17:02:37,418 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 86 [2021-07-09 17:02:37,611 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2021-07-09 17:02:37,870 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2021-07-09 17:02:38,110 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 84 [2021-07-09 17:02:38,320 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2021-07-09 17:02:38,561 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 90 [2021-07-09 17:02:38,806 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2021-07-09 17:02:39,044 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-07-09 17:02:39,315 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 97 [2021-07-09 17:02:39,600 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 100 [2021-07-09 17:02:39,859 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 94 [2021-07-09 17:02:40,179 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 99 [2021-07-09 17:02:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:40,552 INFO L93 Difference]: Finished difference Result 3389 states and 6936 transitions. [2021-07-09 17:02:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-07-09 17:02:40,552 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 [2021-07-09 17:02:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:40,556 INFO L225 Difference]: With dead ends: 3389 [2021-07-09 17:02:40,556 INFO L226 Difference]: Without dead ends: 3389 [2021-07-09 17:02:40,556 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 11681.0ms TimeCoverageRelationStatistics Valid=3861, Invalid=9711, Unknown=0, NotChecked=0, Total=13572 [2021-07-09 17:02:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2021-07-09 17:02:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 2556. [2021-07-09 17:02:40,580 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) [2021-07-09 17:02:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 5235 transitions. [2021-07-09 17:02:40,583 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 5235 transitions. Word has length 85 [2021-07-09 17:02:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:40,583 INFO L482 AbstractCegarLoop]: Abstraction has 2556 states and 5235 transitions. [2021-07-09 17:02:40,583 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) [2021-07-09 17:02:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 5235 transitions. [2021-07-09 17:02:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:02:40,584 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:40,584 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] [2021-07-09 17:02:40,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-09 17:02:40,585 INFO L430 AbstractCegarLoop]: === Iteration 55 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:40,585 INFO L82 PathProgramCache]: Analyzing trace with hash 817173876, now seen corresponding path program 1 times [2021-07-09 17:02:40,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:40,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632564289] [2021-07-09 17:02:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:41,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:41,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632564289] [2021-07-09 17:02:41,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632564289] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:41,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:41,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:02:41,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351001541] [2021-07-09 17:02:41,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:02:41,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:41,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:02:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1173, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:02:41,445 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) [2021-07-09 17:02:42,585 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-07-09 17:02:42,768 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:02:43,061 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:02:43,362 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:02:43,627 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:02:43,843 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:02:44,067 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:02:44,340 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:02:44,580 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:02:44,789 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:02:45,159 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:02:45,419 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:02:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:47,701 INFO L93 Difference]: Finished difference Result 4618 states and 9485 transitions. [2021-07-09 17:02:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:02:47,701 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 [2021-07-09 17:02:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:47,705 INFO L225 Difference]: With dead ends: 4618 [2021-07-09 17:02:47,706 INFO L226 Difference]: Without dead ends: 4618 [2021-07-09 17:02:47,706 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 5070.4ms TimeCoverageRelationStatistics Valid=1246, Invalid=5726, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:02:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4618 states. [2021-07-09 17:02:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4618 to 3655. [2021-07-09 17:02:47,735 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) [2021-07-09 17:02:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 7505 transitions. [2021-07-09 17:02:47,738 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 7505 transitions. Word has length 88 [2021-07-09 17:02:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:47,739 INFO L482 AbstractCegarLoop]: Abstraction has 3655 states and 7505 transitions. [2021-07-09 17:02:47,739 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) [2021-07-09 17:02:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 7505 transitions. [2021-07-09 17:02:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:02:47,741 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:47,741 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] [2021-07-09 17:02:47,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-09 17:02:47,741 INFO L430 AbstractCegarLoop]: === Iteration 56 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:47,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2135192456, now seen corresponding path program 2 times [2021-07-09 17:02:47,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:47,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032701408] [2021-07-09 17:02:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:48,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:48,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032701408] [2021-07-09 17:02:48,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032701408] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:48,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:48,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:02:48,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861221766] [2021-07-09 17:02:48,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:02:48,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:48,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:02:48,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:02:48,642 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) [2021-07-09 17:02:49,757 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-07-09 17:02:49,939 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:02:50,177 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:02:50,382 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:02:50,591 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:02:50,948 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:02:51,163 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:02:51,357 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:02:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:02:53,938 INFO L93 Difference]: Finished difference Result 5494 states and 11303 transitions. [2021-07-09 17:02:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:02:53,939 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 [2021-07-09 17:02:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:02:53,944 INFO L225 Difference]: With dead ends: 5494 [2021-07-09 17:02:53,944 INFO L226 Difference]: Without dead ends: 5494 [2021-07-09 17:02:53,945 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4405.0ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:02:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-07-09 17:02:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 3732. [2021-07-09 17:02:53,978 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) [2021-07-09 17:02:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 7664 transitions. [2021-07-09 17:02:53,982 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 7664 transitions. Word has length 88 [2021-07-09 17:02:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:02:53,982 INFO L482 AbstractCegarLoop]: Abstraction has 3732 states and 7664 transitions. [2021-07-09 17:02:53,982 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) [2021-07-09 17:02:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 7664 transitions. [2021-07-09 17:02:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:02:53,984 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:02:53,984 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] [2021-07-09 17:02:53,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-09 17:02:53,985 INFO L430 AbstractCegarLoop]: === Iteration 57 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:02:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:02:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -43801058, now seen corresponding path program 3 times [2021-07-09 17:02:53,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:02:53,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122907144] [2021-07-09 17:02:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:02:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:02:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:02:54,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:02:54,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122907144] [2021-07-09 17:02:54,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122907144] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:02:54,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:02:54,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:02:54,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785470221] [2021-07-09 17:02:54,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:02:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:02:54,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:02:54,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:02:54,829 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) [2021-07-09 17:02:55,940 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2021-07-09 17:02:56,138 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-07-09 17:02:56,322 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:02:56,551 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 74 [2021-07-09 17:02:56,859 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2021-07-09 17:02:57,089 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-09 17:02:57,284 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2021-07-09 17:02:57,498 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2021-07-09 17:02:57,698 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-07-09 17:03:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:00,649 INFO L93 Difference]: Finished difference Result 6104 states and 12555 transitions. [2021-07-09 17:03:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 17:03:00,650 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 [2021-07-09 17:03:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:00,656 INFO L225 Difference]: With dead ends: 6104 [2021-07-09 17:03:00,656 INFO L226 Difference]: Without dead ends: 6104 [2021-07-09 17:03:00,656 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 4740.5ms TimeCoverageRelationStatistics Valid=1184, Invalid=5458, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 17:03:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6104 states. [2021-07-09 17:03:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6104 to 3804. [2021-07-09 17:03:00,690 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) [2021-07-09 17:03:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-09 17:03:00,694 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-09 17:03:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:00,694 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-09 17:03:00,695 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) [2021-07-09 17:03:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-09 17:03:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:00,697 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:00,697 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] [2021-07-09 17:03:00,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-09 17:03:00,697 INFO L430 AbstractCegarLoop]: === Iteration 58 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash -703678456, now seen corresponding path program 4 times [2021-07-09 17:03:00,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:00,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100733025] [2021-07-09 17:03:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:01,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:01,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100733025] [2021-07-09 17:03:01,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100733025] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:01,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:01,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:03:01,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602458326] [2021-07-09 17:03:01,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:03:01,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:01,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:03:01,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:03:01,469 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) [2021-07-09 17:03:02,602 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:03:02,815 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:03:03,004 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:03:03,220 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:03:03,544 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-09 17:03:03,805 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-09 17:03:04,019 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 17:03:04,225 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:03:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:06,782 INFO L93 Difference]: Finished difference Result 5283 states and 10853 transitions. [2021-07-09 17:03:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:03:06,782 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 [2021-07-09 17:03:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:06,788 INFO L225 Difference]: With dead ends: 5283 [2021-07-09 17:03:06,788 INFO L226 Difference]: Without dead ends: 5283 [2021-07-09 17:03:06,788 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 4319.8ms TimeCoverageRelationStatistics Valid=1051, Invalid=4955, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 17:03:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5283 states. [2021-07-09 17:03:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5283 to 3804. [2021-07-09 17:03:06,823 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) [2021-07-09 17:03:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-09 17:03:06,828 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-09 17:03:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:06,828 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-09 17:03:06,828 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) [2021-07-09 17:03:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-09 17:03:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:06,830 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:06,830 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] [2021-07-09 17:03:06,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-09 17:03:06,831 INFO L430 AbstractCegarLoop]: === Iteration 59 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:06,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:06,831 INFO L82 PathProgramCache]: Analyzing trace with hash -427689492, now seen corresponding path program 5 times [2021-07-09 17:03:06,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:06,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192020057] [2021-07-09 17:03:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:07,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:07,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192020057] [2021-07-09 17:03:07,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192020057] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:07,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:07,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:03:07,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80631399] [2021-07-09 17:03:07,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:03:07,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:07,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:03:07,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:03:07,580 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) [2021-07-09 17:03:08,757 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:03:08,963 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:03:09,153 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:03:09,371 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:03:09,577 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2021-07-09 17:03:09,805 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2021-07-09 17:03:10,198 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2021-07-09 17:03:10,430 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2021-07-09 17:03:10,624 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2021-07-09 17:03:13,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:13,238 INFO L93 Difference]: Finished difference Result 5358 states and 11018 transitions. [2021-07-09 17:03:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:03:13,238 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 [2021-07-09 17:03:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:13,243 INFO L225 Difference]: With dead ends: 5358 [2021-07-09 17:03:13,243 INFO L226 Difference]: Without dead ends: 5358 [2021-07-09 17:03:13,244 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 4513.6ms TimeCoverageRelationStatistics Valid=1094, Invalid=5068, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:03:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5358 states. [2021-07-09 17:03:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5358 to 3804. [2021-07-09 17:03:13,277 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) [2021-07-09 17:03:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-09 17:03:13,281 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-09 17:03:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:13,281 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-09 17:03:13,281 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) [2021-07-09 17:03:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-09 17:03:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:13,283 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:13,283 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] [2021-07-09 17:03:13,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-09 17:03:13,283 INFO L430 AbstractCegarLoop]: === Iteration 60 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash -731666988, now seen corresponding path program 6 times [2021-07-09 17:03:13,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:13,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867572501] [2021-07-09 17:03:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:14,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:14,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867572501] [2021-07-09 17:03:14,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867572501] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:14,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:14,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:03:14,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981682628] [2021-07-09 17:03:14,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:03:14,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:03:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:03:14,049 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) [2021-07-09 17:03:15,211 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:03:15,425 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:03:15,654 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:03:15,861 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 17:03:16,072 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2021-07-09 17:03:16,430 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 76 [2021-07-09 17:03:16,658 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 17:03:16,871 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:03:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:19,434 INFO L93 Difference]: Finished difference Result 5493 states and 11303 transitions. [2021-07-09 17:03:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:03:19,435 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 [2021-07-09 17:03:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:19,440 INFO L225 Difference]: With dead ends: 5493 [2021-07-09 17:03:19,440 INFO L226 Difference]: Without dead ends: 5493 [2021-07-09 17:03:19,441 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 4335.5ms TimeCoverageRelationStatistics Valid=1055, Invalid=4951, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 17:03:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2021-07-09 17:03:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 3804. [2021-07-09 17:03:19,473 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) [2021-07-09 17:03:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3804 states to 3804 states and 7812 transitions. [2021-07-09 17:03:19,477 INFO L78 Accepts]: Start accepts. Automaton has 3804 states and 7812 transitions. Word has length 88 [2021-07-09 17:03:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:19,477 INFO L482 AbstractCegarLoop]: Abstraction has 3804 states and 7812 transitions. [2021-07-09 17:03:19,477 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) [2021-07-09 17:03:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3804 states and 7812 transitions. [2021-07-09 17:03:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:19,479 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:19,479 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] [2021-07-09 17:03:19,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-09 17:03:19,479 INFO L430 AbstractCegarLoop]: === Iteration 61 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1508630058, now seen corresponding path program 7 times [2021-07-09 17:03:19,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:19,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525377574] [2021-07-09 17:03:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:20,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:20,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525377574] [2021-07-09 17:03:20,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525377574] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:20,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:20,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:03:20,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108447949] [2021-07-09 17:03:20,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:03:20,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:20,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:03:20,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:03:20,356 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) [2021-07-09 17:03:21,713 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:03:22,039 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:03:22,342 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:03:22,615 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:03:22,846 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:03:23,074 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:03:23,343 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:03:23,580 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:03:23,805 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:03:24,184 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:03:24,448 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:03:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:26,784 INFO L93 Difference]: Finished difference Result 5990 states and 12319 transitions. [2021-07-09 17:03:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:03:26,784 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 [2021-07-09 17:03:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:26,790 INFO L225 Difference]: With dead ends: 5990 [2021-07-09 17:03:26,790 INFO L226 Difference]: Without dead ends: 5990 [2021-07-09 17:03:26,790 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 5111.2ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:03:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2021-07-09 17:03:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 4050. [2021-07-09 17:03:26,824 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) [2021-07-09 17:03:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 8316 transitions. [2021-07-09 17:03:26,828 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 8316 transitions. Word has length 88 [2021-07-09 17:03:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:26,828 INFO L482 AbstractCegarLoop]: Abstraction has 4050 states and 8316 transitions. [2021-07-09 17:03:26,828 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) [2021-07-09 17:03:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 8316 transitions. [2021-07-09 17:03:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:26,831 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:26,831 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] [2021-07-09 17:03:26,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-09 17:03:26,831 INFO L430 AbstractCegarLoop]: === Iteration 62 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:26,831 INFO L82 PathProgramCache]: Analyzing trace with hash -166029094, now seen corresponding path program 8 times [2021-07-09 17:03:26,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:26,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246250299] [2021-07-09 17:03:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:27,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:27,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246250299] [2021-07-09 17:03:27,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246250299] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:27,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:27,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:03:27,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464463689] [2021-07-09 17:03:27,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:03:27,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:27,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:03:27,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:03:27,680 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) [2021-07-09 17:03:28,982 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:03:29,208 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:03:29,431 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:03:29,630 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:03:29,986 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:03:30,207 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:03:30,401 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:03:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:33,005 INFO L93 Difference]: Finished difference Result 6606 states and 13591 transitions. [2021-07-09 17:03:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:03:33,006 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 [2021-07-09 17:03:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:33,012 INFO L225 Difference]: With dead ends: 6606 [2021-07-09 17:03:33,012 INFO L226 Difference]: Without dead ends: 6606 [2021-07-09 17:03:33,012 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 4379.2ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:03:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-07-09 17:03:33,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 3834. [2021-07-09 17:03:33,048 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) [2021-07-09 17:03:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 7872 transitions. [2021-07-09 17:03:33,053 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 7872 transitions. Word has length 88 [2021-07-09 17:03:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:33,053 INFO L482 AbstractCegarLoop]: Abstraction has 3834 states and 7872 transitions. [2021-07-09 17:03:33,053 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) [2021-07-09 17:03:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 7872 transitions. [2021-07-09 17:03:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:33,055 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:33,055 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] [2021-07-09 17:03:33,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-09 17:03:33,055 INFO L430 AbstractCegarLoop]: === Iteration 63 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash 180679830, now seen corresponding path program 9 times [2021-07-09 17:03:33,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:33,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344181155] [2021-07-09 17:03:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:33,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:33,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344181155] [2021-07-09 17:03:33,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344181155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:33,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:33,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:03:33,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209040601] [2021-07-09 17:03:33,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:03:33,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:03:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:03:33,978 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) [2021-07-09 17:03:35,283 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:03:35,568 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:03:35,845 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:03:36,100 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:03:36,332 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:03:36,558 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:03:36,838 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:03:37,071 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:03:37,284 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:03:37,664 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:03:37,921 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:03:40,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:40,169 INFO L93 Difference]: Finished difference Result 6035 states and 12409 transitions. [2021-07-09 17:03:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:03:40,169 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 [2021-07-09 17:03:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:40,175 INFO L225 Difference]: With dead ends: 6035 [2021-07-09 17:03:40,175 INFO L226 Difference]: Without dead ends: 6035 [2021-07-09 17:03:40,176 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 5118.7ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:03:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2021-07-09 17:03:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4095. [2021-07-09 17:03:40,216 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) [2021-07-09 17:03:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 8406 transitions. [2021-07-09 17:03:40,221 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 8406 transitions. Word has length 88 [2021-07-09 17:03:40,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:40,222 INFO L482 AbstractCegarLoop]: Abstraction has 4095 states and 8406 transitions. [2021-07-09 17:03:40,222 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) [2021-07-09 17:03:40,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 8406 transitions. [2021-07-09 17:03:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:40,225 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:40,225 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] [2021-07-09 17:03:40,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-09 17:03:40,225 INFO L430 AbstractCegarLoop]: === Iteration 64 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:40,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1523280794, now seen corresponding path program 10 times [2021-07-09 17:03:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:40,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702363661] [2021-07-09 17:03:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:41,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:41,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702363661] [2021-07-09 17:03:41,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702363661] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:41,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:41,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:03:41,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657038770] [2021-07-09 17:03:41,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:03:41,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:41,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:03:41,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:03:41,129 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) [2021-07-09 17:03:42,467 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:03:42,702 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:03:42,909 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:03:43,110 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:03:43,482 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:03:43,714 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:03:43,903 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:03:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:46,533 INFO L93 Difference]: Finished difference Result 6651 states and 13681 transitions. [2021-07-09 17:03:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:03:46,534 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 [2021-07-09 17:03:46,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:46,540 INFO L225 Difference]: With dead ends: 6651 [2021-07-09 17:03:46,540 INFO L226 Difference]: Without dead ends: 6651 [2021-07-09 17:03:46,541 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 4355.7ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:03:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-07-09 17:03:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 3849. [2021-07-09 17:03:46,577 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) [2021-07-09 17:03:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 7902 transitions. [2021-07-09 17:03:46,581 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 7902 transitions. Word has length 88 [2021-07-09 17:03:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:46,581 INFO L482 AbstractCegarLoop]: Abstraction has 3849 states and 7902 transitions. [2021-07-09 17:03:46,581 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) [2021-07-09 17:03:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 7902 transitions. [2021-07-09 17:03:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:46,583 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:46,583 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] [2021-07-09 17:03:46,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-09 17:03:46,583 INFO L430 AbstractCegarLoop]: === Iteration 65 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:46,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:46,584 INFO L82 PathProgramCache]: Analyzing trace with hash -450732108, now seen corresponding path program 11 times [2021-07-09 17:03:46,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:46,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506103147] [2021-07-09 17:03:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:47,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:47,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506103147] [2021-07-09 17:03:47,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506103147] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:47,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:47,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:03:47,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750109489] [2021-07-09 17:03:47,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:03:47,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:03:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:03:47,434 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) [2021-07-09 17:03:48,780 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:03:49,098 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:03:49,394 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:03:49,659 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:03:49,888 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:03:50,119 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:03:50,392 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:03:50,645 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:03:50,873 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:03:51,258 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:03:51,518 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:03:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:03:53,940 INFO L93 Difference]: Finished difference Result 6065 states and 12469 transitions. [2021-07-09 17:03:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:03:53,941 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 [2021-07-09 17:03:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:03:53,947 INFO L225 Difference]: With dead ends: 6065 [2021-07-09 17:03:53,947 INFO L226 Difference]: Without dead ends: 6065 [2021-07-09 17:03:53,947 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 5102.4ms TimeCoverageRelationStatistics Valid=1244, Invalid=5728, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:03:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6065 states. [2021-07-09 17:03:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6065 to 4125. [2021-07-09 17:03:53,989 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) [2021-07-09 17:03:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 8466 transitions. [2021-07-09 17:03:53,995 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 8466 transitions. Word has length 88 [2021-07-09 17:03:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:03:53,995 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 8466 transitions. [2021-07-09 17:03:53,996 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) [2021-07-09 17:03:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 8466 transitions. [2021-07-09 17:03:53,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:03:53,998 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:03:53,999 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] [2021-07-09 17:03:53,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-09 17:03:53,999 INFO L430 AbstractCegarLoop]: === Iteration 66 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:03:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:03:53,999 INFO L82 PathProgramCache]: Analyzing trace with hash 891868856, now seen corresponding path program 12 times [2021-07-09 17:03:53,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:03:53,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179298283] [2021-07-09 17:03:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:03:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:03:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:03:54,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:03:54,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179298283] [2021-07-09 17:03:54,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179298283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:03:54,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:03:54,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:03:54,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865790184] [2021-07-09 17:03:54,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:03:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:03:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:03:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:03:54,907 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) [2021-07-09 17:03:56,171 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:03:56,399 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:03:56,600 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:03:56,793 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:03:57,141 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:03:57,376 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:03:57,569 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:04:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:00,067 INFO L93 Difference]: Finished difference Result 6681 states and 13741 transitions. [2021-07-09 17:04:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:04:00,067 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 [2021-07-09 17:04:00,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:00,074 INFO L225 Difference]: With dead ends: 6681 [2021-07-09 17:04:00,074 INFO L226 Difference]: Without dead ends: 6681 [2021-07-09 17:04:00,074 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4341.9ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:04:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2021-07-09 17:04:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 3864. [2021-07-09 17:04:00,110 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) [2021-07-09 17:04:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 7932 transitions. [2021-07-09 17:04:00,114 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 7932 transitions. Word has length 88 [2021-07-09 17:04:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:00,114 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 7932 transitions. [2021-07-09 17:04:00,114 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) [2021-07-09 17:04:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 7932 transitions. [2021-07-09 17:04:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:00,116 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:00,116 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] [2021-07-09 17:04:00,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-09 17:04:00,117 INFO L430 AbstractCegarLoop]: === Iteration 67 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash -898147370, now seen corresponding path program 13 times [2021-07-09 17:04:00,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:00,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96676284] [2021-07-09 17:04:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:00,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:00,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96676284] [2021-07-09 17:04:00,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96676284] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:00,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:00,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:04:00,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704976307] [2021-07-09 17:04:00,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:04:00,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:00,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:04:00,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:04:00,985 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) [2021-07-09 17:04:02,269 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:04:02,560 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:04:02,839 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:04:03,106 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:04:03,334 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:04:03,579 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:04:03,842 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:04:04,093 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:04:04,306 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:04:04,702 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:04:04,963 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:04:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:07,333 INFO L93 Difference]: Finished difference Result 6125 states and 12589 transitions. [2021-07-09 17:04:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:04:07,334 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 [2021-07-09 17:04:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:07,340 INFO L225 Difference]: With dead ends: 6125 [2021-07-09 17:04:07,340 INFO L226 Difference]: Without dead ends: 6125 [2021-07-09 17:04:07,340 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 5093.8ms TimeCoverageRelationStatistics Valid=1244, Invalid=5728, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:04:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2021-07-09 17:04:07,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 4185. [2021-07-09 17:04:07,377 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) [2021-07-09 17:04:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 8586 transitions. [2021-07-09 17:04:07,381 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 8586 transitions. Word has length 88 [2021-07-09 17:04:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:07,382 INFO L482 AbstractCegarLoop]: Abstraction has 4185 states and 8586 transitions. [2021-07-09 17:04:07,382 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) [2021-07-09 17:04:07,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 8586 transitions. [2021-07-09 17:04:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:07,397 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:07,397 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] [2021-07-09 17:04:07,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-09 17:04:07,398 INFO L430 AbstractCegarLoop]: === Iteration 68 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash 444453594, now seen corresponding path program 14 times [2021-07-09 17:04:07,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:07,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006655835] [2021-07-09 17:04:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:08,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:08,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006655835] [2021-07-09 17:04:08,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006655835] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:08,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:08,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:04:08,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372184961] [2021-07-09 17:04:08,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:04:08,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:08,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:04:08,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1108, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:04:08,267 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) [2021-07-09 17:04:09,528 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:04:09,758 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:04:09,961 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:04:10,158 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:04:10,510 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:04:10,744 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:04:10,934 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:04:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:13,506 INFO L93 Difference]: Finished difference Result 6741 states and 13861 transitions. [2021-07-09 17:04:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:04:13,506 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 [2021-07-09 17:04:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:13,513 INFO L225 Difference]: With dead ends: 6741 [2021-07-09 17:04:13,513 INFO L226 Difference]: Without dead ends: 6741 [2021-07-09 17:04:13,514 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4359.8ms TimeCoverageRelationStatistics Valid=1070, Invalid=5092, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:04:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-07-09 17:04:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 3909. [2021-07-09 17:04:13,553 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) [2021-07-09 17:04:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 8022 transitions. [2021-07-09 17:04:13,557 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 8022 transitions. Word has length 88 [2021-07-09 17:04:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:13,557 INFO L482 AbstractCegarLoop]: Abstraction has 3909 states and 8022 transitions. [2021-07-09 17:04:13,557 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) [2021-07-09 17:04:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 8022 transitions. [2021-07-09 17:04:13,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:13,559 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:13,559 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] [2021-07-09 17:04:13,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-09 17:04:13,560 INFO L430 AbstractCegarLoop]: === Iteration 69 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1285639500, now seen corresponding path program 15 times [2021-07-09 17:04:13,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:13,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060611299] [2021-07-09 17:04:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:14,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:14,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060611299] [2021-07-09 17:04:14,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060611299] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:14,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:14,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-07-09 17:04:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145212251] [2021-07-09 17:04:14,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-07-09 17:04:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-07-09 17:04:14,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2021-07-09 17:04:14,411 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) [2021-07-09 17:04:15,669 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2021-07-09 17:04:15,960 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2021-07-09 17:04:16,235 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-07-09 17:04:16,494 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-07-09 17:04:16,719 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 76 [2021-07-09 17:04:16,940 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:04:17,200 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2021-07-09 17:04:17,445 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 86 [2021-07-09 17:04:17,657 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2021-07-09 17:04:18,028 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 72 [2021-07-09 17:04:18,286 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2021-07-09 17:04:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:20,612 INFO L93 Difference]: Finished difference Result 5885 states and 12094 transitions. [2021-07-09 17:04:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 17:04:20,613 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 [2021-07-09 17:04:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:20,619 INFO L225 Difference]: With dead ends: 5885 [2021-07-09 17:04:20,619 INFO L226 Difference]: Without dead ends: 5885 [2021-07-09 17:04:20,619 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 5074.4ms TimeCoverageRelationStatistics Valid=1245, Invalid=5727, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 17:04:20,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2021-07-09 17:04:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 4230. [2021-07-09 17:04:20,657 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) [2021-07-09 17:04:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 8676 transitions. [2021-07-09 17:04:20,662 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 8676 transitions. Word has length 88 [2021-07-09 17:04:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:20,662 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 8676 transitions. [2021-07-09 17:04:20,662 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) [2021-07-09 17:04:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 8676 transitions. [2021-07-09 17:04:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:20,664 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:20,664 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] [2021-07-09 17:04:20,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-09 17:04:20,665 INFO L430 AbstractCegarLoop]: === Iteration 70 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:20,665 INFO L82 PathProgramCache]: Analyzing trace with hash 56961464, now seen corresponding path program 16 times [2021-07-09 17:04:20,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:20,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597415737] [2021-07-09 17:04:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:21,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:21,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597415737] [2021-07-09 17:04:21,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597415737] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:21,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:21,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:04:21,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407458844] [2021-07-09 17:04:21,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:04:21,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:04:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:04:21,683 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) [2021-07-09 17:04:23,005 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-07-09 17:04:23,249 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2021-07-09 17:04:23,472 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 71 [2021-07-09 17:04:23,690 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 76 [2021-07-09 17:04:24,047 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 73 [2021-07-09 17:04:24,277 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2021-07-09 17:04:24,464 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 76 [2021-07-09 17:04:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:26,949 INFO L93 Difference]: Finished difference Result 6501 states and 13366 transitions. [2021-07-09 17:04:26,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:04:26,950 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 [2021-07-09 17:04:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:26,957 INFO L225 Difference]: With dead ends: 6501 [2021-07-09 17:04:26,957 INFO L226 Difference]: Without dead ends: 6501 [2021-07-09 17:04:26,957 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 4478.2ms TimeCoverageRelationStatistics Valid=1071, Invalid=5091, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:04:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2021-07-09 17:04:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 3909. [2021-07-09 17:04:26,993 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) [2021-07-09 17:04:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 8022 transitions. [2021-07-09 17:04:26,997 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 8022 transitions. Word has length 88 [2021-07-09 17:04:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:26,997 INFO L482 AbstractCegarLoop]: Abstraction has 3909 states and 8022 transitions. [2021-07-09 17:04:26,998 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) [2021-07-09 17:04:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 8022 transitions. [2021-07-09 17:04:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:27,000 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:27,000 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] [2021-07-09 17:04:27,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-09 17:04:27,000 INFO L430 AbstractCegarLoop]: === Iteration 71 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1509339986, now seen corresponding path program 17 times [2021-07-09 17:04:27,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:27,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467245995] [2021-07-09 17:04:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:28,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:28,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467245995] [2021-07-09 17:04:28,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467245995] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:28,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:28,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:04:28,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633787911] [2021-07-09 17:04:28,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:04:28,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:28,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:04:28,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1700, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:04:28,487 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) [2021-07-09 17:04:29,847 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-09 17:04:30,074 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:04:30,476 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:04:30,857 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:04:31,128 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 17:04:31,477 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:04:31,765 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 17:04:32,040 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 86 [2021-07-09 17:04:32,425 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2021-07-09 17:04:32,757 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 102 [2021-07-09 17:04:33,070 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 95 [2021-07-09 17:04:33,305 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:04:33,590 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 98 [2021-07-09 17:04:33,941 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-07-09 17:04:34,274 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:04:34,606 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:04:34,843 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-09 17:04:35,391 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2021-07-09 17:04:35,542 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:04:35,930 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2021-07-09 17:04:38,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:38,550 INFO L93 Difference]: Finished difference Result 6588 states and 13566 transitions. [2021-07-09 17:04:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 17:04:38,550 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 [2021-07-09 17:04:38,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:38,557 INFO L225 Difference]: With dead ends: 6588 [2021-07-09 17:04:38,557 INFO L226 Difference]: Without dead ends: 6588 [2021-07-09 17:04:38,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 8413.8ms TimeCoverageRelationStatistics Valid=1865, Invalid=8847, Unknown=0, NotChecked=0, Total=10712 [2021-07-09 17:04:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-07-09 17:04:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4025. [2021-07-09 17:04:38,593 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) [2021-07-09 17:04:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 8257 transitions. [2021-07-09 17:04:38,597 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 8257 transitions. Word has length 88 [2021-07-09 17:04:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:38,597 INFO L482 AbstractCegarLoop]: Abstraction has 4025 states and 8257 transitions. [2021-07-09 17:04:38,597 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) [2021-07-09 17:04:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 8257 transitions. [2021-07-09 17:04:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:38,600 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:38,600 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] [2021-07-09 17:04:38,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-09 17:04:38,600 INFO L430 AbstractCegarLoop]: === Iteration 72 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash -770449374, now seen corresponding path program 18 times [2021-07-09 17:04:38,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:38,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40628806] [2021-07-09 17:04:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:40,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:40,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40628806] [2021-07-09 17:04:40,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40628806] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:40,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:40,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:04:40,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106565335] [2021-07-09 17:04:40,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:04:40,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:04:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1702, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:04:40,049 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) [2021-07-09 17:04:41,437 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-09 17:04:41,663 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:04:42,061 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:04:42,436 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:04:42,795 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:04:43,066 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-09 17:04:43,352 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-09 17:04:43,645 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2021-07-09 17:04:44,044 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2021-07-09 17:04:44,388 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 99 [2021-07-09 17:04:44,725 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-07-09 17:04:44,974 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-09 17:04:45,284 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-09 17:04:45,659 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 88 [2021-07-09 17:04:45,994 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:04:46,328 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:04:47,044 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:04:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:04:50,058 INFO L93 Difference]: Finished difference Result 6776 states and 13957 transitions. [2021-07-09 17:04:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:04:50,058 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 [2021-07-09 17:04:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:04:50,065 INFO L225 Difference]: With dead ends: 6776 [2021-07-09 17:04:50,065 INFO L226 Difference]: Without dead ends: 6776 [2021-07-09 17:04:50,066 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8276.2ms TimeCoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:04:50,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6776 states. [2021-07-09 17:04:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6776 to 4026. [2021-07-09 17:04:50,105 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) [2021-07-09 17:04:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 8259 transitions. [2021-07-09 17:04:50,110 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 8259 transitions. Word has length 88 [2021-07-09 17:04:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:04:50,110 INFO L482 AbstractCegarLoop]: Abstraction has 4026 states and 8259 transitions. [2021-07-09 17:04:50,110 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) [2021-07-09 17:04:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 8259 transitions. [2021-07-09 17:04:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:04:50,112 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:04:50,112 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] [2021-07-09 17:04:50,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-09 17:04:50,113 INFO L430 AbstractCegarLoop]: === Iteration 73 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:04:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:04:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1203116240, now seen corresponding path program 19 times [2021-07-09 17:04:50,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:04:50,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760889226] [2021-07-09 17:04:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:04:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:04:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:04:51,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:04:51,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760889226] [2021-07-09 17:04:51,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760889226] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:04:51,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:04:51,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:04:51,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467317522] [2021-07-09 17:04:51,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:04:51,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:04:51,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:04:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:04:51,578 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) [2021-07-09 17:04:52,963 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2021-07-09 17:04:53,184 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:04:53,571 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:04:53,933 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:04:54,277 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:04:54,560 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-09 17:04:54,835 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-07-09 17:04:55,117 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-09 17:04:55,483 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-09 17:04:55,765 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-07-09 17:04:56,071 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-09 17:04:56,397 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 99 [2021-07-09 17:04:56,665 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 90 [2021-07-09 17:04:57,004 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 92 [2021-07-09 17:04:57,511 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:04:57,852 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:04:58,553 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:05:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:01,560 INFO L93 Difference]: Finished difference Result 8313 states and 17143 transitions. [2021-07-09 17:05:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:05:01,560 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 [2021-07-09 17:05:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:01,569 INFO L225 Difference]: With dead ends: 8313 [2021-07-09 17:05:01,569 INFO L226 Difference]: Without dead ends: 8313 [2021-07-09 17:05:01,570 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8279.5ms TimeCoverageRelationStatistics Valid=1824, Invalid=8682, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:05:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8313 states. [2021-07-09 17:05:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8313 to 4118. [2021-07-09 17:05:01,620 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) [2021-07-09 17:05:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 8452 transitions. [2021-07-09 17:05:01,624 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 8452 transitions. Word has length 88 [2021-07-09 17:05:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:01,625 INFO L482 AbstractCegarLoop]: Abstraction has 4118 states and 8452 transitions. [2021-07-09 17:05:01,625 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) [2021-07-09 17:05:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 8452 transitions. [2021-07-09 17:05:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:01,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:01,627 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] [2021-07-09 17:05:01,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-09 17:05:01,628 INFO L430 AbstractCegarLoop]: === Iteration 74 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1443026346, now seen corresponding path program 20 times [2021-07-09 17:05:01,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:01,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205070543] [2021-07-09 17:05:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:02,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:02,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205070543] [2021-07-09 17:05:02,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205070543] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:02,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:02,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:05:02,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301663535] [2021-07-09 17:05:02,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:05:02,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:02,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:05:02,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:05:02,525 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) [2021-07-09 17:05:03,593 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-07-09 17:05:03,826 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:05:04,035 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-09 17:05:04,285 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:05:04,517 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 17:05:04,745 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:05:05,164 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:05:05,411 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 17:05:05,637 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-09 17:05:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:08,433 INFO L93 Difference]: Finished difference Result 7308 states and 15047 transitions. [2021-07-09 17:05:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:05:08,434 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 [2021-07-09 17:05:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:08,442 INFO L225 Difference]: With dead ends: 7308 [2021-07-09 17:05:08,442 INFO L226 Difference]: Without dead ends: 7308 [2021-07-09 17:05:08,442 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4697.2ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:05:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7308 states. [2021-07-09 17:05:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7308 to 3924. [2021-07-09 17:05:08,484 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) [2021-07-09 17:05:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 8052 transitions. [2021-07-09 17:05:08,489 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 8052 transitions. Word has length 88 [2021-07-09 17:05:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:08,489 INFO L482 AbstractCegarLoop]: Abstraction has 3924 states and 8052 transitions. [2021-07-09 17:05:08,489 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) [2021-07-09 17:05:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 8052 transitions. [2021-07-09 17:05:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:08,491 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:08,491 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] [2021-07-09 17:05:08,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-09 17:05:08,492 INFO L430 AbstractCegarLoop]: === Iteration 75 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash 648365052, now seen corresponding path program 21 times [2021-07-09 17:05:08,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:08,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086652728] [2021-07-09 17:05:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:09,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:09,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086652728] [2021-07-09 17:05:09,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086652728] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:09,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:09,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:05:09,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841178679] [2021-07-09 17:05:09,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:05:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:05:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:05:09,236 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) [2021-07-09 17:05:10,454 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:05:10,675 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:05:10,885 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:05:11,109 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:05:11,450 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-09 17:05:11,700 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:05:11,901 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-09 17:05:12,125 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-09 17:05:12,350 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-09 17:05:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:15,458 INFO L93 Difference]: Finished difference Result 7606 states and 15663 transitions. [2021-07-09 17:05:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 17:05:15,459 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 [2021-07-09 17:05:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:15,466 INFO L225 Difference]: With dead ends: 7606 [2021-07-09 17:05:15,466 INFO L226 Difference]: Without dead ends: 7606 [2021-07-09 17:05:15,467 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 4832.1ms TimeCoverageRelationStatistics Valid=1168, Invalid=5312, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:05:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-07-09 17:05:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 3944. [2021-07-09 17:05:15,507 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) [2021-07-09 17:05:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 8094 transitions. [2021-07-09 17:05:15,511 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 8094 transitions. Word has length 88 [2021-07-09 17:05:15,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:15,511 INFO L482 AbstractCegarLoop]: Abstraction has 3944 states and 8094 transitions. [2021-07-09 17:05:15,511 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) [2021-07-09 17:05:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 8094 transitions. [2021-07-09 17:05:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:15,514 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:15,514 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] [2021-07-09 17:05:15,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-09 17:05:15,514 INFO L430 AbstractCegarLoop]: === Iteration 76 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:15,514 INFO L82 PathProgramCache]: Analyzing trace with hash -11512346, now seen corresponding path program 22 times [2021-07-09 17:05:15,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:15,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266818121] [2021-07-09 17:05:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:16,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:16,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266818121] [2021-07-09 17:05:16,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266818121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:16,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:16,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:05:16,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450125365] [2021-07-09 17:05:16,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:05:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:05:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:05:16,351 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) [2021-07-09 17:05:17,532 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:05:17,736 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:05:17,934 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 17:05:18,164 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-09 17:05:18,581 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-09 17:05:18,847 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-07-09 17:05:19,081 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-09 17:05:19,300 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-07-09 17:05:20,096 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-09 17:05:20,269 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-09 17:05:20,489 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-09 17:05:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:22,416 INFO L93 Difference]: Finished difference Result 6118 states and 12575 transitions. [2021-07-09 17:05:22,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:05:22,416 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 [2021-07-09 17:05:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:22,422 INFO L225 Difference]: With dead ends: 6118 [2021-07-09 17:05:22,422 INFO L226 Difference]: Without dead ends: 6118 [2021-07-09 17:05:22,423 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 5000.9ms TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 17:05:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2021-07-09 17:05:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 3942. [2021-07-09 17:05:22,459 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) [2021-07-09 17:05:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 8090 transitions. [2021-07-09 17:05:22,463 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 8090 transitions. Word has length 88 [2021-07-09 17:05:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:22,464 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 8090 transitions. [2021-07-09 17:05:22,464 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) [2021-07-09 17:05:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 8090 transitions. [2021-07-09 17:05:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:22,466 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:22,466 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] [2021-07-09 17:05:22,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-09 17:05:22,466 INFO L430 AbstractCegarLoop]: === Iteration 77 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash 264476618, now seen corresponding path program 23 times [2021-07-09 17:05:22,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:22,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573999502] [2021-07-09 17:05:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:23,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:23,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573999502] [2021-07-09 17:05:23,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573999502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:23,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:23,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:05:23,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042896119] [2021-07-09 17:05:23,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:05:23,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:05:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:05:23,254 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) [2021-07-09 17:05:24,451 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:05:24,660 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:05:24,867 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 17:05:25,093 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-09 17:05:25,300 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 17:05:25,527 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-09 17:05:25,915 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 17:05:26,175 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-07-09 17:05:26,394 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:05:27,201 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-09 17:05:27,349 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-09 17:05:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:29,418 INFO L93 Difference]: Finished difference Result 6142 states and 12638 transitions. [2021-07-09 17:05:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:05:29,418 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 [2021-07-09 17:05:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:29,425 INFO L225 Difference]: With dead ends: 6142 [2021-07-09 17:05:29,425 INFO L226 Difference]: Without dead ends: 6142 [2021-07-09 17:05:29,425 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 5007.6ms TimeCoverageRelationStatistics Valid=1093, Invalid=5069, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:05:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2021-07-09 17:05:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 3926. [2021-07-09 17:05:29,465 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) [2021-07-09 17:05:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3926 states to 3926 states and 8056 transitions. [2021-07-09 17:05:29,469 INFO L78 Accepts]: Start accepts. Automaton has 3926 states and 8056 transitions. Word has length 88 [2021-07-09 17:05:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:29,469 INFO L482 AbstractCegarLoop]: Abstraction has 3926 states and 8056 transitions. [2021-07-09 17:05:29,470 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) [2021-07-09 17:05:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3926 states and 8056 transitions. [2021-07-09 17:05:29,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:29,472 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:29,472 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] [2021-07-09 17:05:29,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-09 17:05:29,472 INFO L430 AbstractCegarLoop]: === Iteration 78 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:29,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:29,473 INFO L82 PathProgramCache]: Analyzing trace with hash -39500878, now seen corresponding path program 24 times [2021-07-09 17:05:29,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:29,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864127644] [2021-07-09 17:05:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:30,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:30,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864127644] [2021-07-09 17:05:30,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864127644] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:30,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:30,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:05:30,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767551505] [2021-07-09 17:05:30,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:05:30,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:05:30,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:05:30,357 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) [2021-07-09 17:05:31,589 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:05:31,807 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:05:32,048 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:05:32,265 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 17:05:32,513 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:05:32,925 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:05:33,174 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 17:05:33,378 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-09 17:05:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:36,154 INFO L93 Difference]: Finished difference Result 6277 states and 12923 transitions. [2021-07-09 17:05:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:05:36,155 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 [2021-07-09 17:05:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:36,161 INFO L225 Difference]: With dead ends: 6277 [2021-07-09 17:05:36,161 INFO L226 Difference]: Without dead ends: 6277 [2021-07-09 17:05:36,161 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4624.9ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:05:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2021-07-09 17:05:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 3920. [2021-07-09 17:05:36,198 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) [2021-07-09 17:05:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 8044 transitions. [2021-07-09 17:05:36,203 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 8044 transitions. Word has length 88 [2021-07-09 17:05:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:36,203 INFO L482 AbstractCegarLoop]: Abstraction has 3920 states and 8044 transitions. [2021-07-09 17:05:36,203 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) [2021-07-09 17:05:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 8044 transitions. [2021-07-09 17:05:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:36,205 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:36,205 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] [2021-07-09 17:05:36,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-09 17:05:36,205 INFO L430 AbstractCegarLoop]: === Iteration 79 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash -816463948, now seen corresponding path program 25 times [2021-07-09 17:05:36,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:36,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671541791] [2021-07-09 17:05:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:37,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:37,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671541791] [2021-07-09 17:05:37,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671541791] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:37,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:37,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:05:37,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193900432] [2021-07-09 17:05:37,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:05:37,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:05:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1703, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:05:37,725 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) [2021-07-09 17:05:39,096 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-07-09 17:05:39,326 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:05:39,728 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:05:40,137 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:05:40,406 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 78 [2021-07-09 17:05:40,773 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 82 [2021-07-09 17:05:41,062 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 84 [2021-07-09 17:05:41,342 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 86 [2021-07-09 17:05:41,742 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 92 [2021-07-09 17:05:42,079 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 102 [2021-07-09 17:05:42,395 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 95 [2021-07-09 17:05:42,641 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:05:42,941 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 98 [2021-07-09 17:05:43,295 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-07-09 17:05:43,627 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:05:43,958 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:05:44,213 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-09 17:05:44,893 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:05:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:47,848 INFO L93 Difference]: Finished difference Result 6720 states and 13841 transitions. [2021-07-09 17:05:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 17:05:47,848 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 [2021-07-09 17:05:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:47,855 INFO L225 Difference]: With dead ends: 6720 [2021-07-09 17:05:47,855 INFO L226 Difference]: Without dead ends: 6720 [2021-07-09 17:05:47,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 8475.4ms TimeCoverageRelationStatistics Valid=1862, Invalid=8850, Unknown=0, NotChecked=0, Total=10712 [2021-07-09 17:05:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6720 states. [2021-07-09 17:05:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6720 to 4065. [2021-07-09 17:05:47,895 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) [2021-07-09 17:05:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 8337 transitions. [2021-07-09 17:05:47,899 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 8337 transitions. Word has length 88 [2021-07-09 17:05:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:47,900 INFO L482 AbstractCegarLoop]: Abstraction has 4065 states and 8337 transitions. [2021-07-09 17:05:47,900 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) [2021-07-09 17:05:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 8337 transitions. [2021-07-09 17:05:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:47,902 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:47,902 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] [2021-07-09 17:05:47,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-09 17:05:47,902 INFO L430 AbstractCegarLoop]: === Iteration 80 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1198713988, now seen corresponding path program 26 times [2021-07-09 17:05:47,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:47,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750385072] [2021-07-09 17:05:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:05:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:05:49,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:05:49,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750385072] [2021-07-09 17:05:49,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750385072] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:05:49,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:05:49,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:05:49,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655439759] [2021-07-09 17:05:49,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:05:49,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:05:49,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:05:49,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1704, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:05:49,369 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) [2021-07-09 17:05:51,005 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:05:51,417 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:05:51,801 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:05:52,165 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:05:52,454 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-09 17:05:52,756 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-09 17:05:53,046 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 83 [2021-07-09 17:05:53,438 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2021-07-09 17:05:53,769 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 99 [2021-07-09 17:05:54,097 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-07-09 17:05:54,357 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-09 17:05:54,673 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-09 17:05:55,050 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 88 [2021-07-09 17:05:55,379 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:05:55,715 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:05:56,444 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:05:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:05:59,365 INFO L93 Difference]: Finished difference Result 6908 states and 14232 transitions. [2021-07-09 17:05:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:05:59,366 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 [2021-07-09 17:05:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:05:59,373 INFO L225 Difference]: With dead ends: 6908 [2021-07-09 17:05:59,373 INFO L226 Difference]: Without dead ends: 6908 [2021-07-09 17:05:59,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 8324.5ms TimeCoverageRelationStatistics Valid=1815, Invalid=8691, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:05:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6908 states. [2021-07-09 17:05:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6908 to 4066. [2021-07-09 17:05:59,427 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) [2021-07-09 17:05:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 8339 transitions. [2021-07-09 17:05:59,431 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 8339 transitions. Word has length 88 [2021-07-09 17:05:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:05:59,431 INFO L482 AbstractCegarLoop]: Abstraction has 4066 states and 8339 transitions. [2021-07-09 17:05:59,431 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) [2021-07-09 17:05:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 8339 transitions. [2021-07-09 17:05:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:05:59,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:05:59,434 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] [2021-07-09 17:05:59,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-09 17:05:59,434 INFO L430 AbstractCegarLoop]: === Iteration 81 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:05:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:05:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1122687694, now seen corresponding path program 27 times [2021-07-09 17:05:59,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:05:59,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352636941] [2021-07-09 17:05:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:05:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:00,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:00,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352636941] [2021-07-09 17:06:00,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352636941] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:00,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:00,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:06:00,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944960598] [2021-07-09 17:06:00,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:06:00,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:06:00,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1703, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:06:00,862 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) [2021-07-09 17:06:02,475 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-07-09 17:06:02,901 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2021-07-09 17:06:03,315 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-07-09 17:06:03,668 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:06:03,966 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 79 [2021-07-09 17:06:04,244 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 81 [2021-07-09 17:06:04,542 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2021-07-09 17:06:04,928 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2021-07-09 17:06:05,199 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 89 [2021-07-09 17:06:05,495 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 97 [2021-07-09 17:06:05,820 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 99 [2021-07-09 17:06:06,093 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 90 [2021-07-09 17:06:06,417 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 92 [2021-07-09 17:06:06,915 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-07-09 17:06:07,248 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:06:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:10,927 INFO L93 Difference]: Finished difference Result 8445 states and 17418 transitions. [2021-07-09 17:06:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:06:10,927 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 [2021-07-09 17:06:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:10,936 INFO L225 Difference]: With dead ends: 8445 [2021-07-09 17:06:10,937 INFO L226 Difference]: Without dead ends: 8445 [2021-07-09 17:06:10,937 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 8174.1ms TimeCoverageRelationStatistics Valid=1822, Invalid=8684, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:06:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8445 states. [2021-07-09 17:06:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8445 to 4166. [2021-07-09 17:06:10,981 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) [2021-07-09 17:06:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 8548 transitions. [2021-07-09 17:06:10,986 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 8548 transitions. Word has length 88 [2021-07-09 17:06:10,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:10,986 INFO L482 AbstractCegarLoop]: Abstraction has 4166 states and 8548 transitions. [2021-07-09 17:06:10,986 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) [2021-07-09 17:06:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 8548 transitions. [2021-07-09 17:06:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:10,989 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:10,989 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] [2021-07-09 17:06:10,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-09 17:06:10,989 INFO L430 AbstractCegarLoop]: === Iteration 82 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash 526137016, now seen corresponding path program 28 times [2021-07-09 17:06:10,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:10,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347924029] [2021-07-09 17:06:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:11,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:11,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347924029] [2021-07-09 17:06:11,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347924029] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:11,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:11,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:06:11,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156562383] [2021-07-09 17:06:11,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:06:11,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:11,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:06:11,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:06:11,888 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) [2021-07-09 17:06:13,274 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2021-07-09 17:06:13,526 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:06:13,730 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 71 [2021-07-09 17:06:13,944 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-07-09 17:06:14,317 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 77 [2021-07-09 17:06:14,577 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2021-07-09 17:06:14,780 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-07-09 17:06:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:17,354 INFO L93 Difference]: Finished difference Result 7180 states and 14776 transitions. [2021-07-09 17:06:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:06:17,354 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 [2021-07-09 17:06:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:17,362 INFO L225 Difference]: With dead ends: 7180 [2021-07-09 17:06:17,362 INFO L226 Difference]: Without dead ends: 7180 [2021-07-09 17:06:17,362 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4512.4ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:06:17,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7180 states. [2021-07-09 17:06:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7180 to 3916. [2021-07-09 17:06:17,402 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) [2021-07-09 17:06:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 8036 transitions. [2021-07-09 17:06:17,406 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 8036 transitions. Word has length 88 [2021-07-09 17:06:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:17,406 INFO L482 AbstractCegarLoop]: Abstraction has 3916 states and 8036 transitions. [2021-07-09 17:06:17,406 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) [2021-07-09 17:06:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 8036 transitions. [2021-07-09 17:06:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:17,408 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:17,408 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] [2021-07-09 17:06:17,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-09 17:06:17,409 INFO L430 AbstractCegarLoop]: === Iteration 83 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:17,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:17,409 INFO L82 PathProgramCache]: Analyzing trace with hash -510080302, now seen corresponding path program 29 times [2021-07-09 17:06:17,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:17,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91487039] [2021-07-09 17:06:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:18,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:18,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91487039] [2021-07-09 17:06:18,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91487039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:18,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:18,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:06:18,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685009902] [2021-07-09 17:06:18,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:06:18,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:18,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:06:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1700, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:06:18,871 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) [2021-07-09 17:06:20,232 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-09 17:06:20,474 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-09 17:06:20,859 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 17:06:21,223 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-09 17:06:21,466 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 78 [2021-07-09 17:06:21,803 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-07-09 17:06:22,085 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2021-07-09 17:06:22,361 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 86 [2021-07-09 17:06:22,735 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2021-07-09 17:06:23,064 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 102 [2021-07-09 17:06:23,368 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 95 [2021-07-09 17:06:23,591 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2021-07-09 17:06:23,876 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 98 [2021-07-09 17:06:24,220 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 89 [2021-07-09 17:06:24,547 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:06:24,872 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-09 17:06:25,109 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2021-07-09 17:06:25,780 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:06:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:28,636 INFO L93 Difference]: Finished difference Result 6170 states and 12698 transitions. [2021-07-09 17:06:28,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 17:06:28,637 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 [2021-07-09 17:06:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:28,643 INFO L225 Difference]: With dead ends: 6170 [2021-07-09 17:06:28,643 INFO L226 Difference]: Without dead ends: 6170 [2021-07-09 17:06:28,643 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2090 ImplicationChecksByTransitivity, 8298.9ms TimeCoverageRelationStatistics Valid=1865, Invalid=8847, Unknown=0, NotChecked=0, Total=10712 [2021-07-09 17:06:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-07-09 17:06:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 4023. [2021-07-09 17:06:28,680 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) [2021-07-09 17:06:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4023 states to 4023 states and 8253 transitions. [2021-07-09 17:06:28,685 INFO L78 Accepts]: Start accepts. Automaton has 4023 states and 8253 transitions. Word has length 88 [2021-07-09 17:06:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:28,685 INFO L482 AbstractCegarLoop]: Abstraction has 4023 states and 8253 transitions. [2021-07-09 17:06:28,686 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) [2021-07-09 17:06:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4023 states and 8253 transitions. [2021-07-09 17:06:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:28,688 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:28,688 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] [2021-07-09 17:06:28,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-09 17:06:28,688 INFO L430 AbstractCegarLoop]: === Iteration 84 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:28,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1505097634, now seen corresponding path program 30 times [2021-07-09 17:06:28,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:28,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769270079] [2021-07-09 17:06:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:30,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:30,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769270079] [2021-07-09 17:06:30,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769270079] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:30,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:30,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:06:30,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615669194] [2021-07-09 17:06:30,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:06:30,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:30,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:06:30,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1702, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:06:30,122 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) [2021-07-09 17:06:31,474 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-09 17:06:31,701 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-09 17:06:32,074 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 17:06:32,413 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-09 17:06:32,738 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-07-09 17:06:33,005 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 17:06:33,278 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 81 [2021-07-09 17:06:33,539 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2021-07-09 17:06:33,904 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2021-07-09 17:06:34,216 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 99 [2021-07-09 17:06:34,532 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 92 [2021-07-09 17:06:34,764 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:06:35,062 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 97 [2021-07-09 17:06:35,420 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 88 [2021-07-09 17:06:35,728 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:06:36,064 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-09 17:06:36,764 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:06:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:39,658 INFO L93 Difference]: Finished difference Result 6358 states and 13089 transitions. [2021-07-09 17:06:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:06:39,658 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 [2021-07-09 17:06:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:39,664 INFO L225 Difference]: With dead ends: 6358 [2021-07-09 17:06:39,664 INFO L226 Difference]: Without dead ends: 6358 [2021-07-09 17:06:39,664 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8030.6ms TimeCoverageRelationStatistics Valid=1817, Invalid=8689, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:06:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-07-09 17:06:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 4024. [2021-07-09 17:06:39,701 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) [2021-07-09 17:06:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 8255 transitions. [2021-07-09 17:06:39,706 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 8255 transitions. Word has length 88 [2021-07-09 17:06:39,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:39,706 INFO L482 AbstractCegarLoop]: Abstraction has 4024 states and 8255 transitions. [2021-07-09 17:06:39,706 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) [2021-07-09 17:06:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 8255 transitions. [2021-07-09 17:06:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:39,708 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:39,708 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] [2021-07-09 17:06:39,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-09 17:06:39,709 INFO L430 AbstractCegarLoop]: === Iteration 85 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:39,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:39,709 INFO L82 PathProgramCache]: Analyzing trace with hash -816304048, now seen corresponding path program 31 times [2021-07-09 17:06:39,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:39,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499280462] [2021-07-09 17:06:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:41,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:41,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499280462] [2021-07-09 17:06:41,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499280462] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:41,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:41,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-07-09 17:06:41,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049981343] [2021-07-09 17:06:41,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-07-09 17:06:41,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:41,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-07-09 17:06:41,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1701, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 17:06:41,171 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) [2021-07-09 17:06:42,526 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-07-09 17:06:42,759 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2021-07-09 17:06:43,127 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-07-09 17:06:43,471 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2021-07-09 17:06:43,799 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-07-09 17:06:44,060 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 79 [2021-07-09 17:06:44,328 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 81 [2021-07-09 17:06:44,601 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 83 [2021-07-09 17:06:44,950 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 87 [2021-07-09 17:06:45,204 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2021-07-09 17:06:45,488 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 97 [2021-07-09 17:06:45,805 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 99 [2021-07-09 17:06:46,079 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 90 [2021-07-09 17:06:46,400 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 92 [2021-07-09 17:06:46,883 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2021-07-09 17:06:47,213 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2021-07-09 17:06:47,913 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2021-07-09 17:06:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:50,856 INFO L93 Difference]: Finished difference Result 7895 states and 16275 transitions. [2021-07-09 17:06:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 17:06:50,857 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 [2021-07-09 17:06:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:50,865 INFO L225 Difference]: With dead ends: 7895 [2021-07-09 17:06:50,865 INFO L226 Difference]: Without dead ends: 7895 [2021-07-09 17:06:50,866 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 8120.5ms TimeCoverageRelationStatistics Valid=1824, Invalid=8682, Unknown=0, NotChecked=0, Total=10506 [2021-07-09 17:06:50,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7895 states. [2021-07-09 17:06:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7895 to 4116. [2021-07-09 17:06:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4116 states, 4113 states have (on average 2.053975200583516) internal successors, (8448), 4115 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:06:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 8448 transitions. [2021-07-09 17:06:50,913 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 8448 transitions. Word has length 88 [2021-07-09 17:06:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:50,913 INFO L482 AbstractCegarLoop]: Abstraction has 4116 states and 8448 transitions. [2021-07-09 17:06:50,913 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) [2021-07-09 17:06:50,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 8448 transitions. [2021-07-09 17:06:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:50,916 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:50,916 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] [2021-07-09 17:06:50,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-09 17:06:50,916 INFO L430 AbstractCegarLoop]: === Iteration 86 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash 832520662, now seen corresponding path program 32 times [2021-07-09 17:06:50,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:50,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052829880] [2021-07-09 17:06:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:51,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:51,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052829880] [2021-07-09 17:06:51,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052829880] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:51,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:51,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:06:51,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42578074] [2021-07-09 17:06:51,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:06:51,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:51,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:06:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:06:51,844 INFO L87 Difference]: Start difference. First operand 4116 states and 8448 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) [2021-07-09 17:06:53,075 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-09 17:06:53,318 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2021-07-09 17:06:53,562 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 17:06:53,763 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-09 17:06:53,988 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-09 17:06:54,371 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:06:54,605 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 17:06:54,815 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-09 17:06:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:06:57,456 INFO L93 Difference]: Finished difference Result 6890 states and 14179 transitions. [2021-07-09 17:06:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:06:57,456 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 [2021-07-09 17:06:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:06:57,464 INFO L225 Difference]: With dead ends: 6890 [2021-07-09 17:06:57,464 INFO L226 Difference]: Without dead ends: 6890 [2021-07-09 17:06:57,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4565.7ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:06:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6890 states. [2021-07-09 17:06:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6890 to 3922. [2021-07-09 17:06:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3919 states have (on average 2.053585098239347) internal successors, (8048), 3921 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:06:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 8048 transitions. [2021-07-09 17:06:57,508 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 8048 transitions. Word has length 88 [2021-07-09 17:06:57,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:06:57,508 INFO L482 AbstractCegarLoop]: Abstraction has 3922 states and 8048 transitions. [2021-07-09 17:06:57,508 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) [2021-07-09 17:06:57,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 8048 transitions. [2021-07-09 17:06:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:06:57,511 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:06:57,511 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] [2021-07-09 17:06:57,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-09 17:06:57,511 INFO L430 AbstractCegarLoop]: === Iteration 87 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:06:57,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:06:57,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1371055236, now seen corresponding path program 33 times [2021-07-09 17:06:57,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:06:57,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264037896] [2021-07-09 17:06:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:06:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:06:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:06:58,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:06:58,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264037896] [2021-07-09 17:06:58,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264037896] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:06:58,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:06:58,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:06:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852100219] [2021-07-09 17:06:58,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:06:58,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:06:58,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:06:58,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:06:58,212 INFO L87 Difference]: Start difference. First operand 3922 states and 8048 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) [2021-07-09 17:06:59,361 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:06:59,574 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:06:59,766 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:06:59,975 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:07:00,298 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-09 17:07:00,523 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 [2021-07-09 17:07:00,735 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2021-07-09 17:07:00,953 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 79 [2021-07-09 17:07:01,163 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-09 17:07:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:07:04,106 INFO L93 Difference]: Finished difference Result 7508 states and 15467 transitions. [2021-07-09 17:07:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 17:07:04,107 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 [2021-07-09 17:07:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:07:04,116 INFO L225 Difference]: With dead ends: 7508 [2021-07-09 17:07:04,116 INFO L226 Difference]: Without dead ends: 7508 [2021-07-09 17:07:04,117 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 4648.3ms TimeCoverageRelationStatistics Valid=1168, Invalid=5312, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 17:07:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2021-07-09 17:07:04,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 3942. [2021-07-09 17:07:04,167 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) [2021-07-09 17:07:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 8090 transitions. [2021-07-09 17:07:04,172 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 8090 transitions. Word has length 88 [2021-07-09 17:07:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:07:04,172 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 8090 transitions. [2021-07-09 17:07:04,172 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) [2021-07-09 17:07:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 8090 transitions. [2021-07-09 17:07:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:07:04,174 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:07:04,174 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] [2021-07-09 17:07:04,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-09 17:07:04,175 INFO L430 AbstractCegarLoop]: === Iteration 88 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:07:04,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:07:04,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2030932634, now seen corresponding path program 34 times [2021-07-09 17:07:04,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:07:04,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531632474] [2021-07-09 17:07:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:07:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:07:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:07:04,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:07:04,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531632474] [2021-07-09 17:07:04,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531632474] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:07:04,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:07:04,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:07:04,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062048660] [2021-07-09 17:07:04,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:07:04,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:07:04,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:07:04,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:07:04,976 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) [2021-07-09 17:07:06,187 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:07:06,429 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:07:06,636 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 17:07:06,868 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-09 17:07:07,226 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-07-09 17:07:07,498 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 78 [2021-07-09 17:07:07,731 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2021-07-09 17:07:07,959 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-07-09 17:07:08,895 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-09 17:07:09,675 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-07-09 17:07:11,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:07:11,048 INFO L93 Difference]: Finished difference Result 6020 states and 12379 transitions. [2021-07-09 17:07:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:07:11,049 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 [2021-07-09 17:07:11,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:07:11,056 INFO L225 Difference]: With dead ends: 6020 [2021-07-09 17:07:11,056 INFO L226 Difference]: Without dead ends: 6020 [2021-07-09 17:07:11,056 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 4780.2ms TimeCoverageRelationStatistics Valid=1050, Invalid=4956, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 17:07:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2021-07-09 17:07:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 3940. [2021-07-09 17:07:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 3937 states have (on average 2.0538481076962154) internal successors, (8086), 3939 states have internal predecessors, (8086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:07:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 8086 transitions. [2021-07-09 17:07:11,103 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 8086 transitions. Word has length 88 [2021-07-09 17:07:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:07:11,103 INFO L482 AbstractCegarLoop]: Abstraction has 3940 states and 8086 transitions. [2021-07-09 17:07:11,103 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) [2021-07-09 17:07:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 8086 transitions. [2021-07-09 17:07:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:07:11,106 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:07:11,106 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] [2021-07-09 17:07:11,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-09 17:07:11,106 INFO L430 AbstractCegarLoop]: === Iteration 89 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:07:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:07:11,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1754943670, now seen corresponding path program 35 times [2021-07-09 17:07:11,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:07:11,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117883469] [2021-07-09 17:07:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:07:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:07:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:07:11,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:07:11,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117883469] [2021-07-09 17:07:11,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117883469] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:07:11,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:07:11,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:07:11,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782773960] [2021-07-09 17:07:11,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:07:11,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:07:11,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:07:11,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:07:11,913 INFO L87 Difference]: Start difference. First operand 3940 states and 8086 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) [2021-07-09 17:07:12,912 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2021-07-09 17:07:13,071 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2021-07-09 17:07:13,280 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 67 [2021-07-09 17:07:13,486 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2021-07-09 17:07:13,705 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2021-07-09 17:07:13,902 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 72 [2021-07-09 17:07:14,126 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 75 [2021-07-09 17:07:14,527 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 78 [2021-07-09 17:07:14,784 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 81 [2021-07-09 17:07:14,993 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:07:15,870 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-07-09 17:07:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:07:17,884 INFO L93 Difference]: Finished difference Result 6044 states and 12442 transitions. [2021-07-09 17:07:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:07:17,884 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 [2021-07-09 17:07:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:07:17,891 INFO L225 Difference]: With dead ends: 6044 [2021-07-09 17:07:17,891 INFO L226 Difference]: Without dead ends: 6044 [2021-07-09 17:07:17,891 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 4929.8ms TimeCoverageRelationStatistics Valid=1093, Invalid=5069, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:07:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6044 states. [2021-07-09 17:07:17,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6044 to 3924. [2021-07-09 17:07:17,931 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) [2021-07-09 17:07:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3924 states to 3924 states and 8052 transitions. [2021-07-09 17:07:17,936 INFO L78 Accepts]: Start accepts. Automaton has 3924 states and 8052 transitions. Word has length 88 [2021-07-09 17:07:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:07:17,936 INFO L482 AbstractCegarLoop]: Abstraction has 3924 states and 8052 transitions. [2021-07-09 17:07:17,936 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) [2021-07-09 17:07:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3924 states and 8052 transitions. [2021-07-09 17:07:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:07:17,938 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:07:17,939 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] [2021-07-09 17:07:17,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-09 17:07:17,939 INFO L430 AbstractCegarLoop]: === Iteration 90 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:07:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:07:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2058921166, now seen corresponding path program 36 times [2021-07-09 17:07:17,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:07:17,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215860662] [2021-07-09 17:07:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:07:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:07:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:07:18,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:07:18,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215860662] [2021-07-09 17:07:18,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215860662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:07:18,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:07:18,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-07-09 17:07:18,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744772182] [2021-07-09 17:07:18,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-07-09 17:07:18,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:07:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-07-09 17:07:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2021-07-09 17:07:18,846 INFO L87 Difference]: Start difference. First operand 3924 states and 8052 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) [2021-07-09 17:07:20,030 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 63 [2021-07-09 17:07:20,244 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2021-07-09 17:07:20,489 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 69 [2021-07-09 17:07:20,695 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2021-07-09 17:07:20,919 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 73 [2021-07-09 17:07:21,306 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-07-09 17:07:21,548 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 80 [2021-07-09 17:07:21,749 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2021-07-09 17:07:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:07:24,351 INFO L93 Difference]: Finished difference Result 6029 states and 12412 transitions. [2021-07-09 17:07:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 17:07:24,352 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 [2021-07-09 17:07:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:07:24,358 INFO L225 Difference]: With dead ends: 6029 [2021-07-09 17:07:24,359 INFO L226 Difference]: Without dead ends: 6029 [2021-07-09 17:07:24,359 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 4560.1ms TimeCoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 17:07:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2021-07-09 17:07:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 3918. [2021-07-09 17:07:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 3915 states have (on average 2.053639846743295) internal successors, (8040), 3917 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 17:07:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 8040 transitions. [2021-07-09 17:07:24,405 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 8040 transitions. Word has length 88 [2021-07-09 17:07:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:07:24,405 INFO L482 AbstractCegarLoop]: Abstraction has 3918 states and 8040 transitions. [2021-07-09 17:07:24,405 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) [2021-07-09 17:07:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 8040 transitions. [2021-07-09 17:07:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-07-09 17:07:24,408 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:07:24,408 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] [2021-07-09 17:07:24,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-09 17:07:24,408 INFO L430 AbstractCegarLoop]: === Iteration 91 === [reader_fnErr2ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr1ASSERT_VIOLATIONERROR_FUNCTION, reader_fnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-09 17:07:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:07:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1812026156, now seen corresponding path program 37 times [2021-07-09 17:07:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:07:24,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310912870] [2021-07-09 17:07:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:07:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:07:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:07:25,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:07:25,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310912870] [2021-07-09 17:07:25,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310912870] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:07:25,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:07:25,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-07-09 17:07:25,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264719020] [2021-07-09 17:07:25,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-09 17:07:25,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:07:25,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-09 17:07:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-07-09 17:07:25,141 INFO L87 Difference]: Start difference. First operand 3918 states and 8040 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) [2021-07-09 17:07:26,345 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2021-07-09 17:07:26,527 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-07-09 17:07:26,724 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2021-07-09 17:07:26,935 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 74 [2021-07-09 17:07:27,245 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-07-09 17:07:27,476 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 77 Received shutdown request... [2021-07-09 17:07:27,654 WARN L222 SmtUtils]: Removed 19 from assertion stack [2021-07-09 17:07:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-07-09 17:07:27,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-09 17:07:27,654 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 17:07:27,654 INFO L301 ceAbstractionStarter]: Result for error location reader_fnThread1of1ForFork0 was TIMEOUT (1/2) [2021-07-09 17:07:27,658 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-09 17:07:27,659 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:07:27,659 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:07:27,659 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:07:27,659 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:07:27,659 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:07:27,659 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:07:27,659 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:07:27,659 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:07:27,660 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 142 transitions, 292 flow [2021-07-09 17:07:27,661 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 17:07:27,661 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was TIMEOUT (2/2) [2021-07-09 17:07:27,661 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 17:07:27,662 WARN L196 ceAbstractionStarter]: Timeout [2021-07-09 17:07:27,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 05:07:27 BasicIcfg [2021-07-09 17:07:27,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 17:07:27,663 INFO L168 Benchmark]: Toolchain (without parser) took 740614.09 ms. Allocated memory was 210.8 MB in the beginning and 823.1 MB in the end (delta: 612.4 MB). Free memory was 173.7 MB in the beginning and 419.0 MB in the end (delta: -245.3 MB). Peak memory consumption was 368.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 210.8 MB. Free memory is still 192.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.44 ms. Allocated memory is still 210.8 MB. Free memory was 173.5 MB in the beginning and 180.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 210.8 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: Boogie Preprocessor took 40.19 ms. Allocated memory is still 210.8 MB. Free memory was 178.1 MB in the beginning and 176.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: RCFGBuilder took 629.79 ms. Allocated memory is still 210.8 MB. Free memory was 176.3 MB in the beginning and 144.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,663 INFO L168 Benchmark]: TraceAbstraction took 739416.13 ms. Allocated memory was 210.8 MB in the beginning and 823.1 MB in the end (delta: 612.4 MB). Free memory was 143.5 MB in the beginning and 419.0 MB in the end (delta: -275.5 MB). Peak memory consumption was 337.4 MB. Max. memory is 8.0 GB. [2021-07-09 17:07:27,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 210.8 MB. Free memory is still 192.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 463.44 ms. Allocated memory is still 210.8 MB. Free memory was 173.5 MB in the beginning and 180.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.25 ms. Allocated memory is still 210.8 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.19 ms. Allocated memory is still 210.8 MB. Free memory was 178.1 MB in the beginning and 176.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 629.79 ms. Allocated memory is still 210.8 MB. Free memory was 176.3 MB in the beginning and 144.0 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 739416.13 ms. Allocated memory was 210.8 MB in the beginning and 823.1 MB in the end (delta: 612.4 MB). Free memory was 143.5 MB in the beginning and 419.0 MB in the end (delta: -275.5 MB). Peak memory consumption was 337.4 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 (3918states) and FLOYD_HOARE automaton (currently 22 states, 34 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 110ms.. - TimeoutResultAtElement [Line: 836]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (3918states) and FLOYD_HOARE automaton (currently 22 states, 34 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 110ms.. - TimeoutResultAtElement [Line: 832]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (3918states) and FLOYD_HOARE automaton (currently 22 states, 34 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 110ms.. - 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: 739268.2ms, OverallIterations: 91, TraceHistogramMax: 1, EmptinessCheckTime: 247.2ms, AutomataDifference: 668317.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34394 SDtfs, 129896 SDslu, 515886 SDs, 0 SdLazy, 271538 SolverSat, 4587 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108296.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7614 GetRequests, 301 SyntacticMatches, 110 SemanticMatches, 7202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102024 ImplicationChecksByTransitivity, 584238.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4230occurred in iteration=69, InterpolantAutomatonStates: 4827, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3633.3ms AutomataMinimizationTime, 90 MinimizatonAttempts, 148874 StatesRemovedByMinimization, 89 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 141.0ms SsaConstructionTime, 879.1ms SatisfiabilityAnalysisTime, 65472.8ms InterpolantComputationTime, 7727 NumberOfCodeBlocks, 7727 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 7636 ConstructedInterpolants, 0 QuantifiedInterpolants, 129464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 91 InterpolantComputations, 91 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: 2.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.7ms, 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