/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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:11:14,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:11:14,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:11:14,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:11:14,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:11:14,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:11:14,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:11:14,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:11:14,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:11:14,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:11:14,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:11:14,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:11:14,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:11:14,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:11:14,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:11:14,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:11:14,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:11:14,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:11:14,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:11:14,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:11:14,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:11:14,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:11:14,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:11:14,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:11:14,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:11:14,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:11:14,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:11:14,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:11:14,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:11:14,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:11:14,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:11:14,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:11:14,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:11:14,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:11:14,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:11:14,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:11:14,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:11:14,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:11:14,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:11:14,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:11:14,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:11:14,852 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 06:11:14,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:11:14,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:11:14,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:11:14,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:11:14,890 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:11:14,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:11:14,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:11:14,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:11:14,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:11:14,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:11:14,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:11:14,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:11:14,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:11:14,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:11:14,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:11:14,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:11:14,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:11:14,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:11:14,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:11:14,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:11:14,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:11:14,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:11:14,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:11:14,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:11:14,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:11:15,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:11:15,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:11:15,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:11:15,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:11:15,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:11:15,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:15,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4619bb53e/5d6488a7014646068da6f07f8aadcf11/FLAG81454343e [2020-10-27 06:11:16,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:11:16,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:16,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4619bb53e/5d6488a7014646068da6f07f8aadcf11/FLAG81454343e [2020-10-27 06:11:16,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4619bb53e/5d6488a7014646068da6f07f8aadcf11 [2020-10-27 06:11:16,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:11:16,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:11:16,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:16,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:11:16,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:11:16,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:16" (1/1) ... [2020-10-27 06:11:16,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe8aa52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:16, skipping insertion in model container [2020-10-27 06:11:16,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:16" (1/1) ... [2020-10-27 06:11:16,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:11:16,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:11:17,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:17,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:11:17,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:11:17,695 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:11:17,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17 WrapperNode [2020-10-27 06:11:17,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:11:17,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:11:17,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:11:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:11:17,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (1/1) ... [2020-10-27 06:11:17,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:11:17,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:11:17,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:11:17,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:11:17,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (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 06:11:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:11:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:11:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:11:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:11:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:11:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:11:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:11:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:11:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:11:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:11:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:11:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:11:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:11:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:11:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:11:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:11:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:11:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:11:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:11:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:11:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:11:18,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:11:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:11:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:11:20,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:11:20,557 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:11:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:20 BoogieIcfgContainer [2020-10-27 06:11:20,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:11:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:11:20,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:11:20,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:11:20,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:11:16" (1/3) ... [2020-10-27 06:11:20,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ce34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:20, skipping insertion in model container [2020-10-27 06:11:20,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:17" (2/3) ... [2020-10-27 06:11:20,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ce34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:11:20, skipping insertion in model container [2020-10-27 06:11:20,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:20" (3/3) ... [2020-10-27 06:11:20,572 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:11:20,585 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:11:20,591 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:11:20,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:11:20,641 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:11:20,641 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:11:20,641 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:11:20,641 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:11:20,641 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:11:20,642 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:11:20,642 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:11:20,642 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:11:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2020-10-27 06:11:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 06:11:20,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:20,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:20,708 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 48007832, now seen corresponding path program 1 times [2020-10-27 06:11:20,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:20,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086757779] [2020-10-27 06:11:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:23,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:26,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:26,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 06:11:26,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:11:26,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5133 [2020-10-27 06:11:26,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:11:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 06:11:26,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 06:11:26,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:11:27,800 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:27,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:27,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:27,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 06:11:27,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:28,019 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 06:11:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086757779] [2020-10-27 06:11:28,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:28,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:11:28,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321521595] [2020-10-27 06:11:28,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:11:28,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:28,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:11:28,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:11:28,053 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 4 states. [2020-10-27 06:11:29,352 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 06:11:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:36,252 INFO L93 Difference]: Finished difference Result 1213 states and 2154 transitions. [2020-10-27 06:11:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:11:36,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-10-27 06:11:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:36,280 INFO L225 Difference]: With dead ends: 1213 [2020-10-27 06:11:36,281 INFO L226 Difference]: Without dead ends: 978 [2020-10-27 06:11:36,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-27 06:11:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2020-10-27 06:11:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-27 06:11:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1687 transitions. [2020-10-27 06:11:36,445 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1687 transitions. Word has length 218 [2020-10-27 06:11:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:36,446 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1687 transitions. [2020-10-27 06:11:36,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:11:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1687 transitions. [2020-10-27 06:11:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 06:11:36,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:36,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:36,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:11:36,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:36,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1152014067, now seen corresponding path program 1 times [2020-10-27 06:11:36,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:36,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110821200] [2020-10-27 06:11:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:37,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 06:11:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:11:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 06:11:41,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 06:11:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 06:11:43,138 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:43,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:43,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:43,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:43,462 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 06:11:43,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110821200] [2020-10-27 06:11:43,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:43,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:43,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750805431] [2020-10-27 06:11:43,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:43,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:43,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:43,467 INFO L87 Difference]: Start difference. First operand 975 states and 1687 transitions. Second operand 5 states. [2020-10-27 06:11:51,413 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:11:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:51,624 INFO L93 Difference]: Finished difference Result 2880 states and 4988 transitions. [2020-10-27 06:11:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:51,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 06:11:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:51,640 INFO L225 Difference]: With dead ends: 2880 [2020-10-27 06:11:51,640 INFO L226 Difference]: Without dead ends: 1922 [2020-10-27 06:11:51,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:51,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2020-10-27 06:11:51,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1919. [2020-10-27 06:11:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-10-27 06:11:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3310 transitions. [2020-10-27 06:11:51,748 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3310 transitions. Word has length 222 [2020-10-27 06:11:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:51,749 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 3310 transitions. [2020-10-27 06:11:51,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3310 transitions. [2020-10-27 06:11:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:11:51,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:51,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:51,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:11:51,757 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:51,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1644447696, now seen corresponding path program 1 times [2020-10-27 06:11:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:51,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175325450] [2020-10-27 06:11:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:56,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:11:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:11:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:11:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:11:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:58,659 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:58,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:11:58,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:58,932 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 06:11:58,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175325450] [2020-10-27 06:11:58,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:58,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:58,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122878408] [2020-10-27 06:11:58,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:58,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:58,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:58,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:58,935 INFO L87 Difference]: Start difference. First operand 1919 states and 3310 transitions. Second operand 5 states. [2020-10-27 06:12:08,524 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:08,811 INFO L93 Difference]: Finished difference Result 5517 states and 9501 transitions. [2020-10-27 06:12:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:08,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:12:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:08,833 INFO L225 Difference]: With dead ends: 5517 [2020-10-27 06:12:08,833 INFO L226 Difference]: Without dead ends: 3736 [2020-10-27 06:12:08,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2020-10-27 06:12:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3733. [2020-10-27 06:12:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-10-27 06:12:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 6418 transitions. [2020-10-27 06:12:09,065 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 6418 transitions. Word has length 223 [2020-10-27 06:12:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:09,066 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 6418 transitions. [2020-10-27 06:12:09,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 6418 transitions. [2020-10-27 06:12:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:12:09,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:09,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:09,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:12:09,077 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -126225927, now seen corresponding path program 1 times [2020-10-27 06:12:09,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:09,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390813347] [2020-10-27 06:12:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:10,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:13,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:14,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:12:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:15,696 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:15,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:15,952 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 06:12:15,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390813347] [2020-10-27 06:12:15,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:15,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:15,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456783442] [2020-10-27 06:12:15,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:15,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:15,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:15,956 INFO L87 Difference]: Start difference. First operand 3733 states and 6418 transitions. Second operand 5 states. [2020-10-27 06:12:23,775 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:23,991 INFO L93 Difference]: Finished difference Result 11107 states and 19103 transitions. [2020-10-27 06:12:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:23,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:12:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:24,031 INFO L225 Difference]: With dead ends: 11107 [2020-10-27 06:12:24,031 INFO L226 Difference]: Without dead ends: 7392 [2020-10-27 06:12:24,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7392 states. [2020-10-27 06:12:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7392 to 7389. [2020-10-27 06:12:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7389 states. [2020-10-27 06:12:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7389 states to 7389 states and 12655 transitions. [2020-10-27 06:12:24,600 INFO L78 Accepts]: Start accepts. Automaton has 7389 states and 12655 transitions. Word has length 223 [2020-10-27 06:12:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:24,601 INFO L481 AbstractCegarLoop]: Abstraction has 7389 states and 12655 transitions. [2020-10-27 06:12:24,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7389 states and 12655 transitions. [2020-10-27 06:12:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:12:24,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:24,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:24,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:12:24,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1212597076, now seen corresponding path program 1 times [2020-10-27 06:12:24,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:24,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759861279] [2020-10-27 06:12:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:28,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:29,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:29,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:12:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:31,100 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:31,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 06:12:31,361 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 06:12:31,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759861279] [2020-10-27 06:12:31,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:31,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:31,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221158041] [2020-10-27 06:12:31,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:31,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:31,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:31,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:31,374 INFO L87 Difference]: Start difference. First operand 7389 states and 12655 transitions. Second operand 5 states. [2020-10-27 06:12:40,665 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:41,010 INFO L93 Difference]: Finished difference Result 21435 states and 36665 transitions. [2020-10-27 06:12:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:41,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:12:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:41,095 INFO L225 Difference]: With dead ends: 21435 [2020-10-27 06:12:41,095 INFO L226 Difference]: Without dead ends: 14416 [2020-10-27 06:12:41,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14416 states. [2020-10-27 06:12:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14416 to 14413. [2020-10-27 06:12:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14413 states. [2020-10-27 06:12:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14413 states to 14413 states and 24593 transitions. [2020-10-27 06:12:42,377 INFO L78 Accepts]: Start accepts. Automaton has 14413 states and 24593 transitions. Word has length 224 [2020-10-27 06:12:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:42,378 INFO L481 AbstractCegarLoop]: Abstraction has 14413 states and 24593 transitions. [2020-10-27 06:12:42,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14413 states and 24593 transitions. [2020-10-27 06:12:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:12:42,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:42,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:42,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:12:42,416 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:42,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:42,417 INFO L82 PathProgramCache]: Analyzing trace with hash -934701374, now seen corresponding path program 1 times [2020-10-27 06:12:42,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:42,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318497924] [2020-10-27 06:12:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:47,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:47,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-27 06:12:47,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:48,881 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:12:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:49,025 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 06:12:49,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318497924] [2020-10-27 06:12:49,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:49,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:49,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353713308] [2020-10-27 06:12:49,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:49,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:49,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:49,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:49,028 INFO L87 Difference]: Start difference. First operand 14413 states and 24593 transitions. Second operand 5 states. [2020-10-27 06:12:57,936 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:58,353 INFO L93 Difference]: Finished difference Result 42955 states and 73305 transitions. [2020-10-27 06:12:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:58,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:12:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:58,425 INFO L225 Difference]: With dead ends: 42955 [2020-10-27 06:12:58,425 INFO L226 Difference]: Without dead ends: 28585 [2020-10-27 06:12:58,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28585 states. [2020-10-27 06:13:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28585 to 28582. [2020-10-27 06:13:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28582 states. [2020-10-27 06:13:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28582 states to 28582 states and 48574 transitions. [2020-10-27 06:13:00,429 INFO L78 Accepts]: Start accepts. Automaton has 28582 states and 48574 transitions. Word has length 224 [2020-10-27 06:13:00,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:00,430 INFO L481 AbstractCegarLoop]: Abstraction has 28582 states and 48574 transitions. [2020-10-27 06:13:00,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 28582 states and 48574 transitions. [2020-10-27 06:13:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:13:00,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:00,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:00,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:13:00,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:00,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:00,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2095467195, now seen corresponding path program 1 times [2020-10-27 06:13:00,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:00,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822360860] [2020-10-27 06:13:00,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:05,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:13:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-27 06:13:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:06,945 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:06,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:07,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:07,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 06:13:07,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:13:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:13:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:07,115 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 06:13:07,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822360860] [2020-10-27 06:13:07,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:07,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:13:07,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162555413] [2020-10-27 06:13:07,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 06:13:07,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:07,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 06:13:07,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 06:13:07,118 INFO L87 Difference]: Start difference. First operand 28582 states and 48574 transitions. Second operand 8 states. [2020-10-27 06:13:08,431 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:18,875 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 06:13:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:21,022 INFO L93 Difference]: Finished difference Result 56536 states and 95430 transitions. [2020-10-27 06:13:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:13:21,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-27 06:13:21,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:21,129 INFO L225 Difference]: With dead ends: 56536 [2020-10-27 06:13:21,129 INFO L226 Difference]: Without dead ends: 44021 [2020-10-27 06:13:21,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:13:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44021 states. [2020-10-27 06:13:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44021 to 28822. [2020-10-27 06:13:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28822 states. [2020-10-27 06:13:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28822 states to 28822 states and 48830 transitions. [2020-10-27 06:13:23,272 INFO L78 Accepts]: Start accepts. Automaton has 28822 states and 48830 transitions. Word has length 225 [2020-10-27 06:13:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:23,273 INFO L481 AbstractCegarLoop]: Abstraction has 28822 states and 48830 transitions. [2020-10-27 06:13:23,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 06:13:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 28822 states and 48830 transitions. [2020-10-27 06:13:23,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:13:23,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:23,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:23,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:13:23,324 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:23,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:23,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1577907739, now seen corresponding path program 1 times [2020-10-27 06:13:23,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:23,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397925137] [2020-10-27 06:13:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:23,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 06:13:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:29,849 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:29,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:29,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:29,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:29,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:13:29,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:29,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:29,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:30,010 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 06:13:30,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397925137] [2020-10-27 06:13:30,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:30,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:30,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320353519] [2020-10-27 06:13:30,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:30,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:30,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:30,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:30,012 INFO L87 Difference]: Start difference. First operand 28822 states and 48830 transitions. Second operand 5 states. [2020-10-27 06:13:41,508 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:13:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:13:42,597 INFO L93 Difference]: Finished difference Result 84868 states and 143698 transitions. [2020-10-27 06:13:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:13:42,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:13:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:13:42,713 INFO L225 Difference]: With dead ends: 84868 [2020-10-27 06:13:42,714 INFO L226 Difference]: Without dead ends: 56913 [2020-10-27 06:13:42,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:13:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56913 states. [2020-10-27 06:13:47,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56913 to 56910. [2020-10-27 06:13:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56910 states. [2020-10-27 06:13:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56910 states to 56910 states and 96014 transitions. [2020-10-27 06:13:47,238 INFO L78 Accepts]: Start accepts. Automaton has 56910 states and 96014 transitions. Word has length 225 [2020-10-27 06:13:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:13:47,238 INFO L481 AbstractCegarLoop]: Abstraction has 56910 states and 96014 transitions. [2020-10-27 06:13:47,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:13:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 56910 states and 96014 transitions. [2020-10-27 06:13:47,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:13:47,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:13:47,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:13:47,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:13:47,302 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:13:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:13:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 964996683, now seen corresponding path program 1 times [2020-10-27 06:13:47,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:13:47,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997805506] [2020-10-27 06:13:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:13:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:47,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:48,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:13:52,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 06:13:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:53,799 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:13:53,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:13:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:13:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:13:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:13:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:13:53,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:13:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 06:13:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:13:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:13:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:13:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:13:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:13:53,975 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 06:13:53,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997805506] [2020-10-27 06:13:53,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:13:53,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:13:53,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784744816] [2020-10-27 06:13:53,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:13:53,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:13:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:13:53,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:13:53,977 INFO L87 Difference]: Start difference. First operand 56910 states and 96014 transitions. Second operand 5 states. [2020-10-27 06:14:09,548 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:14:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:14:11,990 INFO L93 Difference]: Finished difference Result 168452 states and 284174 transitions. [2020-10-27 06:14:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:14:11,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:14:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:14:12,216 INFO L225 Difference]: With dead ends: 168452 [2020-10-27 06:14:12,217 INFO L226 Difference]: Without dead ends: 113025 [2020-10-27 06:14:12,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:14:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113025 states. [2020-10-27 06:14:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113025 to 113022. [2020-10-27 06:14:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113022 states. [2020-10-27 06:14:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113022 states to 113022 states and 190070 transitions. [2020-10-27 06:14:22,827 INFO L78 Accepts]: Start accepts. Automaton has 113022 states and 190070 transitions. Word has length 225 [2020-10-27 06:14:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:14:22,828 INFO L481 AbstractCegarLoop]: Abstraction has 113022 states and 190070 transitions. [2020-10-27 06:14:22,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:14:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 113022 states and 190070 transitions. [2020-10-27 06:14:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 06:14:23,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:14:23,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:14:23,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:14:23,220 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:14:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:14:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash -195818526, now seen corresponding path program 1 times [2020-10-27 06:14:23,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:14:23,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984998910] [2020-10-27 06:14:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:14:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:23,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:24,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:24,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:28,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:28,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 06:14:28,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:14:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 06:14:28,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:14:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:14:28,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:14:28,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:29,796 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:14:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:14:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:14:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:14:29,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:14:29,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:14:29,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:14:29,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:14:29,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:14:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:14:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:14:29,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:14:29,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:14:29,984 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 06:14:29,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984998910] [2020-10-27 06:14:29,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:14:29,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:14:29,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463125116] [2020-10-27 06:14:29,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:14:29,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:14:29,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:14:29,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:14:29,987 INFO L87 Difference]: Start difference. First operand 113022 states and 190070 transitions. Second operand 5 states.