/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:21:50,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:21:50,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:21:50,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:21:50,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:21:50,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:21:50,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:21:50,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:21:50,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:21:50,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:21:50,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:21:50,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:21:50,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:21:50,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:21:50,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:21:50,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:21:50,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:21:50,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:21:50,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:21:50,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:21:50,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:21:50,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:21:50,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:21:50,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:21:50,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:21:50,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:21:50,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:21:50,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:21:50,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:21:50,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:21:50,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:21:50,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:21:50,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:21:50,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:21:50,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:21:50,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:21:50,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:21:50,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:21:50,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:21:50,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:21:50,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:21:50,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:21:50,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:21:50,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:21:50,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:21:50,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:21:50,979 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:21:50,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:21:50,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:21:50,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:21:50,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:21:50,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:21:50,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:21:50,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:21:50,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:21:50,982 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:21:50,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:21:50,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:21:50,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:21:50,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:21:50,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:21:50,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:21:50,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:21:50,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:21:50,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:21:50,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:21:50,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:21:50,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:21:50,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:21:50,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:21:50,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:21:50,989 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:21:51,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:21:51,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:21:51,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:21:51,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:21:51,409 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:21:51,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:21:51,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f027ae94/c1628940bc344cbdb6b61755b6b94b6a/FLAG086ca359c [2020-10-27 05:21:52,331 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:21:52,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:21:52,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f027ae94/c1628940bc344cbdb6b61755b6b94b6a/FLAG086ca359c [2020-10-27 05:21:52,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f027ae94/c1628940bc344cbdb6b61755b6b94b6a [2020-10-27 05:21:52,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:21:52,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:21:52,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:21:52,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:21:52,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:21:52,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:21:52" (1/1) ... [2020-10-27 05:21:52,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dab0d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:52, skipping insertion in model container [2020-10-27 05:21:52,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:21:52" (1/1) ... [2020-10-27 05:21:52,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:21:52,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:21:53,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:21:53,504 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:21:53,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:21:53,918 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:21:53,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53 WrapperNode [2020-10-27 05:21:53,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:21:53,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:21:53,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:21:53,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:21:53,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:53,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:53,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:53,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:54,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:54,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:54,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... [2020-10-27 05:21:54,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:21:54,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:21:54,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:21:54,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:21:54,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 05:21:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:21:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:21:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:21:54,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:21:54,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:21:54,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:21:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:21:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:21:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:21:54,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:21:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:21:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:21:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:21:54,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:21:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:21:54,242 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:21:54,243 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:21:54,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:21:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:21:54,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:21:56,748 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:21:56,749 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:21:56,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:21:56 BoogieIcfgContainer [2020-10-27 05:21:56,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:21:56,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:21:56,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:21:56,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:21:56,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:21:52" (1/3) ... [2020-10-27 05:21:56,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028f552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:21:56, skipping insertion in model container [2020-10-27 05:21:56,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:21:53" (2/3) ... [2020-10-27 05:21:56,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028f552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:21:56, skipping insertion in model container [2020-10-27 05:21:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:21:56" (3/3) ... [2020-10-27 05:21:56,764 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:21:56,776 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:21:56,781 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:21:56,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:21:56,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:21:56,826 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:21:56,826 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:21:56,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:21:56,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:21:56,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:21:56,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:21:56,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:21:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2020-10-27 05:21:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 05:21:56,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:56,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:56,888 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1232942352, now seen corresponding path program 1 times [2020-10-27 05:21:56,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:56,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162326431] [2020-10-27 05:21:56,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:57,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:59,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:02,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:02,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 05:22:02,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:22:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:22:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:02,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:22:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:22:03,296 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:22:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:03,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:03,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:03,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:03,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:03,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162326431] [2020-10-27 05:22:03,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:03,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:03,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030862893] [2020-10-27 05:22:03,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:03,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:03,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:03,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:03,508 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 6 states. [2020-10-27 05:22:04,450 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:22:09,623 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:22:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:10,159 INFO L93 Difference]: Finished difference Result 1160 states and 2038 transitions. [2020-10-27 05:22:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:10,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-27 05:22:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:10,181 INFO L225 Difference]: With dead ends: 1160 [2020-10-27 05:22:10,181 INFO L226 Difference]: Without dead ends: 688 [2020-10-27 05:22:10,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-10-27 05:22:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2020-10-27 05:22:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-27 05:22:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 858 transitions. [2020-10-27 05:22:10,304 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 858 transitions. Word has length 76 [2020-10-27 05:22:10,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:10,305 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 858 transitions. [2020-10-27 05:22:10,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 858 transitions. [2020-10-27 05:22:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 05:22:10,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:10,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:10,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:22:10,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2050386591, now seen corresponding path program 1 times [2020-10-27 05:22:10,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:10,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520690882] [2020-10-27 05:22:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:15,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 05:22:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:16,220 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:22:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:16,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:22:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:16,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520690882] [2020-10-27 05:22:16,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:16,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:16,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788249528] [2020-10-27 05:22:16,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:16,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:16,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:16,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:16,324 INFO L87 Difference]: Start difference. First operand 637 states and 858 transitions. Second operand 6 states. [2020-10-27 05:22:17,229 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:22:20,649 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:22:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:21,165 INFO L93 Difference]: Finished difference Result 1315 states and 1815 transitions. [2020-10-27 05:22:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:21,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-27 05:22:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:21,172 INFO L225 Difference]: With dead ends: 1315 [2020-10-27 05:22:21,172 INFO L226 Difference]: Without dead ends: 813 [2020-10-27 05:22:21,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-10-27 05:22:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 764. [2020-10-27 05:22:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 764 states. [2020-10-27 05:22:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1049 transitions. [2020-10-27 05:22:21,239 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1049 transitions. Word has length 77 [2020-10-27 05:22:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:21,240 INFO L481 AbstractCegarLoop]: Abstraction has 764 states and 1049 transitions. [2020-10-27 05:22:21,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1049 transitions. [2020-10-27 05:22:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 05:22:21,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:21,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:21,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:22:21,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:21,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1812686764, now seen corresponding path program 1 times [2020-10-27 05:22:21,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:21,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267934162] [2020-10-27 05:22:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:26,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:26,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 05:22:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:22:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:22:26,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 05:22:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:27,235 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:22:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:27,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:27,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:27,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:27,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267934162] [2020-10-27 05:22:27,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:27,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:27,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005920682] [2020-10-27 05:22:27,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:27,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:27,348 INFO L87 Difference]: Start difference. First operand 764 states and 1049 transitions. Second operand 6 states. [2020-10-27 05:22:28,312 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:22:31,447 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:22:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:31,975 INFO L93 Difference]: Finished difference Result 1852 states and 2623 transitions. [2020-10-27 05:22:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:22:31,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-27 05:22:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:31,983 INFO L225 Difference]: With dead ends: 1852 [2020-10-27 05:22:31,983 INFO L226 Difference]: Without dead ends: 1179 [2020-10-27 05:22:31,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-27 05:22:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1144. [2020-10-27 05:22:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-10-27 05:22:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1630 transitions. [2020-10-27 05:22:32,068 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1630 transitions. Word has length 78 [2020-10-27 05:22:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:32,069 INFO L481 AbstractCegarLoop]: Abstraction has 1144 states and 1630 transitions. [2020-10-27 05:22:32,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1630 transitions. [2020-10-27 05:22:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 05:22:32,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:32,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:32,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:22:32,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1031714907, now seen corresponding path program 1 times [2020-10-27 05:22:32,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:32,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470272392] [2020-10-27 05:22:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:37,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 05:22:37,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:22:37,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:22:37,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:22:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:22:37,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:38,160 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:22:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:38,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 05:22:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:38,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470272392] [2020-10-27 05:22:38,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:38,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:22:38,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39651556] [2020-10-27 05:22:38,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:22:38,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:38,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:22:38,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:38,300 INFO L87 Difference]: Start difference. First operand 1144 states and 1630 transitions. Second operand 10 states. [2020-10-27 05:22:39,220 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:22:43,051 WARN L193 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:22:44,233 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:22:45,261 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:22:46,387 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:22:48,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:48,257 INFO L93 Difference]: Finished difference Result 5640 states and 8412 transitions. [2020-10-27 05:22:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 05:22:48,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-27 05:22:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:48,291 INFO L225 Difference]: With dead ends: 5640 [2020-10-27 05:22:48,291 INFO L226 Difference]: Without dead ends: 5076 [2020-10-27 05:22:48,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:22:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2020-10-27 05:22:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 1398. [2020-10-27 05:22:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1398 states. [2020-10-27 05:22:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2021 transitions. [2020-10-27 05:22:48,488 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2021 transitions. Word has length 79 [2020-10-27 05:22:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:48,489 INFO L481 AbstractCegarLoop]: Abstraction has 1398 states and 2021 transitions. [2020-10-27 05:22:48,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:22:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2021 transitions. [2020-10-27 05:22:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 05:22:48,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:48,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:48,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:22:48,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash -173223598, now seen corresponding path program 1 times [2020-10-27 05:22:48,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:48,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103938463] [2020-10-27 05:22:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:48,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:53,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:22:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:54,384 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:22:54,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:54,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:54,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:54,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:54,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103938463] [2020-10-27 05:22:54,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:54,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:54,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753053065] [2020-10-27 05:22:54,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:54,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:54,497 INFO L87 Difference]: Start difference. First operand 1398 states and 2021 transitions. Second operand 6 states. [2020-10-27 05:22:55,436 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 05:22:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:57,935 INFO L93 Difference]: Finished difference Result 2705 states and 3948 transitions. [2020-10-27 05:22:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:22:57,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-27 05:22:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:57,943 INFO L225 Difference]: With dead ends: 2705 [2020-10-27 05:22:57,943 INFO L226 Difference]: Without dead ends: 1382 [2020-10-27 05:22:57,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-27 05:22:58,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2020-10-27 05:22:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2020-10-27 05:22:58,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1991 transitions. [2020-10-27 05:22:58,060 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1991 transitions. Word has length 79 [2020-10-27 05:22:58,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:58,061 INFO L481 AbstractCegarLoop]: Abstraction has 1382 states and 1991 transitions. [2020-10-27 05:22:58,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:22:58,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1991 transitions. [2020-10-27 05:22:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 05:22:58,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:58,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:58,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:22:58,064 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:58,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:58,064 INFO L82 PathProgramCache]: Analyzing trace with hash 446492249, now seen corresponding path program 1 times [2020-10-27 05:22:58,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:58,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571738492] [2020-10-27 05:22:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:00,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:23:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 05:23:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:04,225 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:23:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:04,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:04,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:04,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:04,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571738492] [2020-10-27 05:23:04,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:04,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:23:04,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213408268] [2020-10-27 05:23:04,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:23:04,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:04,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:23:04,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:23:04,404 INFO L87 Difference]: Start difference. First operand 1382 states and 1991 transitions. Second operand 11 states. [2020-10-27 05:23:05,316 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:23:12,133 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 343 DAG size of output: 340 [2020-10-27 05:23:13,270 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:23:14,336 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-27 05:23:15,287 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:23:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:18,016 INFO L93 Difference]: Finished difference Result 8137 states and 12049 transitions. [2020-10-27 05:23:18,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:23:18,016 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-10-27 05:23:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:18,052 INFO L225 Difference]: With dead ends: 8137 [2020-10-27 05:23:18,052 INFO L226 Difference]: Without dead ends: 6924 [2020-10-27 05:23:18,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:23:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2020-10-27 05:23:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 3081. [2020-10-27 05:23:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2020-10-27 05:23:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4549 transitions. [2020-10-27 05:23:18,436 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4549 transitions. Word has length 80 [2020-10-27 05:23:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:18,436 INFO L481 AbstractCegarLoop]: Abstraction has 3081 states and 4549 transitions. [2020-10-27 05:23:18,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:23:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4549 transitions. [2020-10-27 05:23:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:23:18,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:18,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:18,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:23:18,441 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:18,442 INFO L82 PathProgramCache]: Analyzing trace with hash -104688078, now seen corresponding path program 1 times [2020-10-27 05:23:18,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:18,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299308755] [2020-10-27 05:23:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:20,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:23:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:24,503 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:23:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:24,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:24,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299308755] [2020-10-27 05:23:24,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:24,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:23:24,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562721842] [2020-10-27 05:23:24,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:23:24,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:24,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:23:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:23:24,611 INFO L87 Difference]: Start difference. First operand 3081 states and 4549 transitions. Second operand 10 states. [2020-10-27 05:23:25,643 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:23:29,250 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:23:30,419 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:23:32,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:32,273 INFO L93 Difference]: Finished difference Result 9133 states and 13639 transitions. [2020-10-27 05:23:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:23:32,274 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 05:23:32,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:32,314 INFO L225 Difference]: With dead ends: 9133 [2020-10-27 05:23:32,314 INFO L226 Difference]: Without dead ends: 9127 [2020-10-27 05:23:32,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:23:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9127 states. [2020-10-27 05:23:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9127 to 3081. [2020-10-27 05:23:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3081 states. [2020-10-27 05:23:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 4547 transitions. [2020-10-27 05:23:32,769 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 4547 transitions. Word has length 81 [2020-10-27 05:23:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:32,769 INFO L481 AbstractCegarLoop]: Abstraction has 3081 states and 4547 transitions. [2020-10-27 05:23:32,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:23:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 4547 transitions. [2020-10-27 05:23:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:23:32,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:32,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:32,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:23:32,774 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 753803231, now seen corresponding path program 1 times [2020-10-27 05:23:32,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:32,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609830530] [2020-10-27 05:23:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:33,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:33,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:35,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:37,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:23:37,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:23:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:23:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:23:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 05:23:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:38,937 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:23:38,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:39,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609830530] [2020-10-27 05:23:39,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:39,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:23:39,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165739755] [2020-10-27 05:23:39,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:23:39,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:39,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:23:39,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:23:39,011 INFO L87 Difference]: Start difference. First operand 3081 states and 4547 transitions. Second operand 10 states. [2020-10-27 05:23:40,017 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:23:43,205 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:23:44,310 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2020-10-27 05:23:45,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:45,785 INFO L93 Difference]: Finished difference Result 7051 states and 10523 transitions. [2020-10-27 05:23:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:23:45,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 05:23:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:45,798 INFO L225 Difference]: With dead ends: 7051 [2020-10-27 05:23:45,798 INFO L226 Difference]: Without dead ends: 4613 [2020-10-27 05:23:45,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:23:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4613 states. [2020-10-27 05:23:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4613 to 2322. [2020-10-27 05:23:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:23:46,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3399 transitions. [2020-10-27 05:23:46,095 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3399 transitions. Word has length 81 [2020-10-27 05:23:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:46,095 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3399 transitions. [2020-10-27 05:23:46,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:23:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3399 transitions. [2020-10-27 05:23:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:23:46,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:46,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:46,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:23:46,099 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash 51546500, now seen corresponding path program 1 times [2020-10-27 05:23:46,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:46,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864100385] [2020-10-27 05:23:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:51,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:51,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:23:51,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:23:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 05:23:51,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:23:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:51,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:23:51,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:52,153 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:23:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:52,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:52,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864100385] [2020-10-27 05:23:52,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:52,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:23:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286105997] [2020-10-27 05:23:52,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:23:52,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:52,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:23:52,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:23:52,287 INFO L87 Difference]: Start difference. First operand 2322 states and 3399 transitions. Second operand 10 states. [2020-10-27 05:23:53,333 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:23:56,737 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:23:57,979 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 05:24:00,734 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:24:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:00,928 INFO L93 Difference]: Finished difference Result 6944 states and 10419 transitions. [2020-10-27 05:24:00,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:24:00,928 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 05:24:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:00,941 INFO L225 Difference]: With dead ends: 6944 [2020-10-27 05:24:00,941 INFO L226 Difference]: Without dead ends: 5279 [2020-10-27 05:24:00,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:24:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2020-10-27 05:24:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 2322. [2020-10-27 05:24:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:24:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3397 transitions. [2020-10-27 05:24:01,284 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3397 transitions. Word has length 81 [2020-10-27 05:24:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:01,285 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3397 transitions. [2020-10-27 05:24:01,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:24:01,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3397 transitions. [2020-10-27 05:24:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:24:01,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:01,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:01,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:24:01,288 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1143619334, now seen corresponding path program 1 times [2020-10-27 05:24:01,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:01,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663626838] [2020-10-27 05:24:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:01,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:01,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:01,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:24:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:07,329 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:24:07,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:07,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:07,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:07,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663626838] [2020-10-27 05:24:07,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:07,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:24:07,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000585967] [2020-10-27 05:24:07,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:24:07,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:07,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:24:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:24:07,447 INFO L87 Difference]: Start difference. First operand 2322 states and 3397 transitions. Second operand 10 states. [2020-10-27 05:24:08,451 WARN L193 SmtUtils]: Spent 905.00 ms on a formula simplification that was a NOOP. DAG size: 344 [2020-10-27 05:24:11,709 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2020-10-27 05:24:12,901 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 338 [2020-10-27 05:24:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:14,940 INFO L93 Difference]: Finished difference Result 7127 states and 10598 transitions. [2020-10-27 05:24:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:24:14,941 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-27 05:24:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:14,956 INFO L225 Difference]: With dead ends: 7127 [2020-10-27 05:24:14,956 INFO L226 Difference]: Without dead ends: 7121 [2020-10-27 05:24:14,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:24:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7121 states. [2020-10-27 05:24:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7121 to 2322. [2020-10-27 05:24:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:24:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3395 transitions. [2020-10-27 05:24:15,438 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3395 transitions. Word has length 81 [2020-10-27 05:24:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:15,438 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3395 transitions. [2020-10-27 05:24:15,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:24:15,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3395 transitions. [2020-10-27 05:24:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 05:24:15,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:15,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:15,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:24:15,441 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -44532522, now seen corresponding path program 1 times [2020-10-27 05:24:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:15,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903701105] [2020-10-27 05:24:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:15,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:17,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:20,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:20,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 05:24:20,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:24:20,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:24:20,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:24:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 05:24:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:21,493 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:24:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:21,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903701105] [2020-10-27 05:24:21,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:21,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:24:21,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113536045] [2020-10-27 05:24:21,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:24:21,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:21,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:24:21,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:24:21,573 INFO L87 Difference]: Start difference. First operand 2322 states and 3395 transitions. Second operand 12 states. [2020-10-27 05:24:23,579 WARN L193 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 350 DAG size of output: 347 [2020-10-27 05:24:29,259 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 353 DAG size of output: 350 [2020-10-27 05:24:31,217 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 352 DAG size of output: 351 [2020-10-27 05:24:37,809 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 348 DAG size of output: 345 [2020-10-27 05:24:39,633 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 347 DAG size of output: 346 [2020-10-27 05:24:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:24:40,923 INFO L93 Difference]: Finished difference Result 13611 states and 20295 transitions. [2020-10-27 05:24:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 05:24:40,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-27 05:24:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:24:40,948 INFO L225 Difference]: With dead ends: 13611 [2020-10-27 05:24:40,949 INFO L226 Difference]: Without dead ends: 12115 [2020-10-27 05:24:40,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=471, Invalid=1599, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 05:24:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2020-10-27 05:24:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 2322. [2020-10-27 05:24:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:24:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3393 transitions. [2020-10-27 05:24:41,526 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3393 transitions. Word has length 81 [2020-10-27 05:24:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:24:41,527 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3393 transitions. [2020-10-27 05:24:41,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 05:24:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3393 transitions. [2020-10-27 05:24:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 05:24:41,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:24:41,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:24:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:24:41,529 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:24:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:24:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 584758044, now seen corresponding path program 1 times [2020-10-27 05:24:41,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:24:41,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067355558] [2020-10-27 05:24:41,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:24:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:46,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:46,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 05:24:46,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:24:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 05:24:46,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 05:24:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:24:46,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:24:46,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:47,822 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:24:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:24:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:24:47,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:24:47,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:24:47,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:24:47,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:24:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:24:47,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067355558] [2020-10-27 05:24:47,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:24:47,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 05:24:47,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249314393] [2020-10-27 05:24:47,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 05:24:47,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:24:47,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 05:24:47,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 05:24:47,937 INFO L87 Difference]: Start difference. First operand 2322 states and 3393 transitions. Second operand 17 states. [2020-10-27 05:24:48,089 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-27 05:24:50,233 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 369 DAG size of output: 367 [2020-10-27 05:24:50,911 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-27 05:24:56,690 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2020-10-27 05:24:57,745 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:24:58,714 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:25:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:01,434 INFO L93 Difference]: Finished difference Result 6131 states and 9134 transitions. [2020-10-27 05:25:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 05:25:01,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-10-27 05:25:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:01,443 INFO L225 Difference]: With dead ends: 6131 [2020-10-27 05:25:01,443 INFO L226 Difference]: Without dead ends: 4649 [2020-10-27 05:25:01,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=397, Invalid=1583, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 05:25:01,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2020-10-27 05:25:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 2322. [2020-10-27 05:25:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:25:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3392 transitions. [2020-10-27 05:25:01,917 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3392 transitions. Word has length 83 [2020-10-27 05:25:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:01,917 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3392 transitions. [2020-10-27 05:25:01,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 05:25:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3392 transitions. [2020-10-27 05:25:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 05:25:01,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:01,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:01,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:25:01,920 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:01,920 INFO L82 PathProgramCache]: Analyzing trace with hash 389231387, now seen corresponding path program 1 times [2020-10-27 05:25:01,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:01,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345999630] [2020-10-27 05:25:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:02,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:03,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:05,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:06,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 05:25:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:25:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:25:06,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 05:25:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:25:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:08,068 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:25:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:08,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:08,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:08,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345999630] [2020-10-27 05:25:08,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:08,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 05:25:08,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980932769] [2020-10-27 05:25:08,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 05:25:08,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 05:25:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:25:08,159 INFO L87 Difference]: Start difference. First operand 2322 states and 3392 transitions. Second operand 14 states. [2020-10-27 05:25:09,230 WARN L193 SmtUtils]: Spent 957.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2020-10-27 05:25:14,528 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:25:15,555 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2020-10-27 05:25:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:18,503 INFO L93 Difference]: Finished difference Result 5823 states and 8693 transitions. [2020-10-27 05:25:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 05:25:18,504 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-10-27 05:25:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:18,510 INFO L225 Difference]: With dead ends: 5823 [2020-10-27 05:25:18,511 INFO L226 Difference]: Without dead ends: 4357 [2020-10-27 05:25:18,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 05:25:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2020-10-27 05:25:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 2322. [2020-10-27 05:25:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:25:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3391 transitions. [2020-10-27 05:25:18,973 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3391 transitions. Word has length 83 [2020-10-27 05:25:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:18,973 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3391 transitions. [2020-10-27 05:25:18,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 05:25:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3391 transitions. [2020-10-27 05:25:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 05:25:18,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:18,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:18,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:25:18,976 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:18,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1569420162, now seen corresponding path program 1 times [2020-10-27 05:25:18,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:18,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432325254] [2020-10-27 05:25:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 05:25:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:25:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:25,001 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 05:25:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:25:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:25,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:25:25,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:25:25,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:25:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:25:25,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432325254] [2020-10-27 05:25:25,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:25:25,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:25:25,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503143703] [2020-10-27 05:25:25,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:25:25,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:25:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:25:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:25:25,086 INFO L87 Difference]: Start difference. First operand 2322 states and 3391 transitions. Second operand 10 states. [2020-10-27 05:25:26,113 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2020-10-27 05:25:29,588 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-27 05:25:30,672 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 05:25:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:25:33,045 INFO L93 Difference]: Finished difference Result 8583 states and 12820 transitions. [2020-10-27 05:25:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 05:25:33,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-27 05:25:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:25:33,054 INFO L225 Difference]: With dead ends: 8583 [2020-10-27 05:25:33,054 INFO L226 Difference]: Without dead ends: 7121 [2020-10-27 05:25:33,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:25:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7121 states. [2020-10-27 05:25:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7121 to 2322. [2020-10-27 05:25:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-10-27 05:25:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3389 transitions. [2020-10-27 05:25:33,539 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3389 transitions. Word has length 83 [2020-10-27 05:25:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:25:33,539 INFO L481 AbstractCegarLoop]: Abstraction has 2322 states and 3389 transitions. [2020-10-27 05:25:33,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:25:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3389 transitions. [2020-10-27 05:25:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 05:25:33,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:25:33,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:25:33,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:25:33,541 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:25:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:25:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash -961733891, now seen corresponding path program 1 times [2020-10-27 05:25:33,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:25:33,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292645201] [2020-10-27 05:25:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:25:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:25:33,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:25:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...