/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:18:52,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:18:52,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:18:52,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:18:52,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:18:52,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:18:52,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:18:52,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:18:52,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:18:52,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:18:52,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:18:52,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:18:52,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:18:52,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:18:52,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:18:52,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:18:52,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:18:52,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:18:52,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:18:52,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:18:52,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:18:52,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:18:52,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:18:52,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:18:52,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:18:52,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:18:52,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:18:52,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:18:52,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:18:52,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:18:52,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:18:52,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:18:52,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:18:52,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:18:52,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:18:52,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:18:52,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:18:52,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:18:52,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:18:52,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:18:52,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:18:52,761 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 [2020-10-29 12:18:52,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:18:52,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:18:52,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:18:52,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:18:52,792 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:18:52,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:18:52,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:18:52,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:18:52,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:18:52,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:18:52,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:18:52,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:18:52,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:18:52,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:18:52,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:18:52,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:18:52,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:18:52,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:18:52,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:18:52,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:18:52,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:18:52,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:18:52,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:18:52,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:18:52,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:18:52,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:18:52,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:18:52,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:18:52,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:18:52,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:18:53,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:18:53,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:18:53,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:18:53,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:18:53,296 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:18:53,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:53,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b5d524d/c1e405a90e0148748c44826da4e826a5/FLAG9572c319f [2020-10-29 12:18:54,050 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:18:54,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:54,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b5d524d/c1e405a90e0148748c44826da4e826a5/FLAG9572c319f [2020-10-29 12:18:54,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68b5d524d/c1e405a90e0148748c44826da4e826a5 [2020-10-29 12:18:54,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:18:54,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:18:54,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:18:54,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:18:54,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:18:54,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d235be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54, skipping insertion in model container [2020-10-29 12:18:54,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:18:54,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:18:54,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:18:54,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:18:54,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:18:54,830 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:18:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54 WrapperNode [2020-10-29 12:18:54,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:18:54,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:18:54,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:18:54,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:18:54,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (1/1) ... [2020-10-29 12:18:54,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:18:54,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:18:54,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:18:54,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:18:54,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (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 [2020-10-29 12:18:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:18:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:18:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:18:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:18:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:18:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:18:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:18:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:18:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:18:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:18:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:18:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:18:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:18:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:18:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:18:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:18:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:18:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:18:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:18:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:18:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:18:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:18:55,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:18:55,851 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:18:55,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:18:55 BoogieIcfgContainer [2020-10-29 12:18:55,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:18:55,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:18:55,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:18:55,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:18:55,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:18:54" (1/3) ... [2020-10-29 12:18:55,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d278a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:18:55, skipping insertion in model container [2020-10-29 12:18:55,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:18:54" (2/3) ... [2020-10-29 12:18:55,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d278a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:18:55, skipping insertion in model container [2020-10-29 12:18:55,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:18:55" (3/3) ... [2020-10-29 12:18:55,863 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-29 12:18:55,875 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:18:55,880 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:18:55,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:18:55,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:18:55,923 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:18:55,923 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:18:55,923 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:18:55,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:18:55,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:18:55,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:18:55,924 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:18:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-29 12:18:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:18:55,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:55,959 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] [2020-10-29 12:18:55,960 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:55,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455396, now seen corresponding path program 1 times [2020-10-29 12:18:55,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:55,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818097973] [2020-10-29 12:18:55,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 12:18:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:56,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:18:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:18:57,177 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:57,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:57,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 12:18:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:18:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:18:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:57,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:18:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:57,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:18:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:57,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:18:57,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:57,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:18:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:57,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:18:57,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:18:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:57,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:18:57,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818097973] [2020-10-29 12:18:57,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:18:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:18:57,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502736104] [2020-10-29 12:18:57,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:18:57,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:18:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:18:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:18:57,520 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-29 12:18:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:18:58,674 INFO L93 Difference]: Finished difference Result 271 states and 432 transitions. [2020-10-29 12:18:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:18:58,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-29 12:18:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:18:58,688 INFO L225 Difference]: With dead ends: 271 [2020-10-29 12:18:58,688 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 12:18:58,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:18:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 12:18:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-29 12:18:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 12:18:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 252 transitions. [2020-10-29 12:18:58,754 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 252 transitions. Word has length 59 [2020-10-29 12:18:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:18:58,755 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 252 transitions. [2020-10-29 12:18:58,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:18:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 252 transitions. [2020-10-29 12:18:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:18:58,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:18:58,758 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] [2020-10-29 12:18:58,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:18:58,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:18:58,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:18:58,760 INFO L82 PathProgramCache]: Analyzing trace with hash -252527902, now seen corresponding path program 1 times [2020-10-29 12:18:58,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:18:58,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157778002] [2020-10-29 12:18:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:18:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:59,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:18:59,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-29 12:18:59,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:59,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:18:59,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:18:59,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:18:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:18:59,863 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:18:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:18:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:18:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:18:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:18:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:18:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:18:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:18:59,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:18:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:18:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:18:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:18:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:18:59,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:18:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:18:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:00,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 12:19:00,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:00,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:00,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:19:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:00,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:00,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:19:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:00,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:00,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:00,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:19:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:00,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:00,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:00,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:00,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:00,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:00,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:00,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:00,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157778002] [2020-10-29 12:19:00,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:00,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:19:00,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110676790] [2020-10-29 12:19:00,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:19:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:19:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:19:00,233 INFO L87 Difference]: Start difference. First operand 156 states and 252 transitions. Second operand 10 states. [2020-10-29 12:19:00,775 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:01,092 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:19:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:02,785 INFO L93 Difference]: Finished difference Result 268 states and 421 transitions. [2020-10-29 12:19:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:19:02,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-29 12:19:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:02,792 INFO L225 Difference]: With dead ends: 268 [2020-10-29 12:19:02,792 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 12:19:02,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:19:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 12:19:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-29 12:19:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 12:19:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2020-10-29 12:19:02,823 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 59 [2020-10-29 12:19:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:02,824 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2020-10-29 12:19:02,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:19:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2020-10-29 12:19:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:19:02,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:02,826 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] [2020-10-29 12:19:02,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:19:02,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:02,827 INFO L82 PathProgramCache]: Analyzing trace with hash -627127477, now seen corresponding path program 1 times [2020-10-29 12:19:02,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:02,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025599602] [2020-10-29 12:19:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:02,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:03,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:07,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:07,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:19:07,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:19:07,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:07,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:19:07,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:19:07,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:08,203 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:08,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:08,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:08,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:19:08,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:19:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:08,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:08,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:08,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:08,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:08,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:08,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:08,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:19:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:19:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:19:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:19:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:08,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:19:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:08,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:08,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:08,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:08,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:08,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:08,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:08,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:08,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025599602] [2020-10-29 12:19:08,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:08,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:08,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385675863] [2020-10-29 12:19:08,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:08,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:08,581 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand 9 states. [2020-10-29 12:19:08,875 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:11,029 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:19:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:11,435 INFO L93 Difference]: Finished difference Result 374 states and 559 transitions. [2020-10-29 12:19:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:19:11,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-29 12:19:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:11,440 INFO L225 Difference]: With dead ends: 374 [2020-10-29 12:19:11,441 INFO L226 Difference]: Without dead ends: 283 [2020-10-29 12:19:11,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:11,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-29 12:19:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 246. [2020-10-29 12:19:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-29 12:19:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 366 transitions. [2020-10-29 12:19:11,509 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 366 transitions. Word has length 85 [2020-10-29 12:19:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:11,511 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 366 transitions. [2020-10-29 12:19:11,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 366 transitions. [2020-10-29 12:19:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:19:11,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:11,522 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] [2020-10-29 12:19:11,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:19:11,522 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:11,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:11,523 INFO L82 PathProgramCache]: Analyzing trace with hash -874216196, now seen corresponding path program 1 times [2020-10-29 12:19:11,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:11,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675210204] [2020-10-29 12:19:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:19:16,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:19:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:19:16,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:16,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:19:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:16,907 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:16,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:16,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:16,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:16,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:16,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:19:16,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:16,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:16,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:19:16,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:19:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:19:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:17,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:17,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:17,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:17,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:17,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675210204] [2020-10-29 12:19:17,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:17,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:17,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673923287] [2020-10-29 12:19:17,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:17,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:17,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:17,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:17,259 INFO L87 Difference]: Start difference. First operand 246 states and 366 transitions. Second operand 9 states. [2020-10-29 12:19:17,576 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:17,939 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:19:18,371 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:19:18,956 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:19:20,000 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:23,079 INFO L93 Difference]: Finished difference Result 929 states and 1385 transitions. [2020-10-29 12:19:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:23,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:19:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:23,085 INFO L225 Difference]: With dead ends: 929 [2020-10-29 12:19:23,085 INFO L226 Difference]: Without dead ends: 710 [2020-10-29 12:19:23,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2020-10-29 12:19:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 641. [2020-10-29 12:19:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-29 12:19:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 952 transitions. [2020-10-29 12:19:23,172 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 952 transitions. Word has length 87 [2020-10-29 12:19:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:23,173 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 952 transitions. [2020-10-29 12:19:23,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 952 transitions. [2020-10-29 12:19:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:19:23,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:23,175 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] [2020-10-29 12:19:23,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:19:23,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1746547491, now seen corresponding path program 1 times [2020-10-29 12:19:23,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:23,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262225555] [2020-10-29 12:19:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:19:28,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,508 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:28,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:19:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:19:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:28,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:19:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:19:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:28,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:28,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:19:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:28,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:28,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:28,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:19:28,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:19:28,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:19:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:28,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:28,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:28,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:28,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:28,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:28,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:28,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:28,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262225555] [2020-10-29 12:19:28,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:28,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:19:28,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579116304] [2020-10-29 12:19:28,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:19:28,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:28,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:19:28,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:19:28,916 INFO L87 Difference]: Start difference. First operand 641 states and 952 transitions. Second operand 10 states. [2020-10-29 12:19:29,220 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:29,586 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:30,198 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:19:30,551 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:19:30,942 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:19:31,244 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:19:31,622 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:19:31,963 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:19:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:36,261 INFO L93 Difference]: Finished difference Result 2692 states and 3982 transitions. [2020-10-29 12:19:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:19:36,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-29 12:19:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:36,282 INFO L225 Difference]: With dead ends: 2692 [2020-10-29 12:19:36,282 INFO L226 Difference]: Without dead ends: 1984 [2020-10-29 12:19:36,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:19:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-10-29 12:19:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1795. [2020-10-29 12:19:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2020-10-29 12:19:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2652 transitions. [2020-10-29 12:19:36,448 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2652 transitions. Word has length 88 [2020-10-29 12:19:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:36,449 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2652 transitions. [2020-10-29 12:19:36,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:19:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2652 transitions. [2020-10-29 12:19:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:19:36,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:36,460 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] [2020-10-29 12:19:36,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:19:36,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:36,461 INFO L82 PathProgramCache]: Analyzing trace with hash -985141215, now seen corresponding path program 1 times [2020-10-29 12:19:36,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:36,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618473554] [2020-10-29 12:19:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:41,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:19:41,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:41,809 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:41,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:41,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:41,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:19:41,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:19:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:19:41,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:19:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:19:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:42,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:42,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:19:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:42,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:19:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:19:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:42,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:42,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:42,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:42,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:42,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618473554] [2020-10-29 12:19:42,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:42,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:42,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013033576] [2020-10-29 12:19:42,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:42,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:42,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:42,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:42,163 INFO L87 Difference]: Start difference. First operand 1795 states and 2652 transitions. Second operand 9 states. [2020-10-29 12:19:42,468 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:42,766 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:43,138 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:43,463 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:19:44,439 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:46,763 INFO L93 Difference]: Finished difference Result 3435 states and 5063 transitions. [2020-10-29 12:19:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:19:46,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:19:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:46,774 INFO L225 Difference]: With dead ends: 3435 [2020-10-29 12:19:46,775 INFO L226 Difference]: Without dead ends: 1747 [2020-10-29 12:19:46,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:19:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-29 12:19:46,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1353. [2020-10-29 12:19:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-10-29 12:19:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1971 transitions. [2020-10-29 12:19:46,917 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1971 transitions. Word has length 89 [2020-10-29 12:19:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:46,917 INFO L481 AbstractCegarLoop]: Abstraction has 1353 states and 1971 transitions. [2020-10-29 12:19:46,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1971 transitions. [2020-10-29 12:19:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:19:46,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:46,923 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] [2020-10-29 12:19:46,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:19:46,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:46,923 INFO L82 PathProgramCache]: Analyzing trace with hash 397638443, now seen corresponding path program 1 times [2020-10-29 12:19:46,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:46,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557754006] [2020-10-29 12:19:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:51,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:51,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:19:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,323 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:52,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:52,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:52,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:19:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:19:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:52,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:19:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:19:52,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:52,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:19:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:52,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557754006] [2020-10-29 12:19:52,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:52,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:52,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757751600] [2020-10-29 12:19:52,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:52,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:52,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:52,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:52,709 INFO L87 Difference]: Start difference. First operand 1353 states and 1971 transitions. Second operand 9 states. [2020-10-29 12:19:53,012 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:53,333 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:19:53,749 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:19:54,327 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:19:55,405 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:58,499 INFO L93 Difference]: Finished difference Result 4709 states and 6916 transitions. [2020-10-29 12:19:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:58,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:19:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:58,518 INFO L225 Difference]: With dead ends: 4709 [2020-10-29 12:19:58,518 INFO L226 Difference]: Without dead ends: 3396 [2020-10-29 12:19:58,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2020-10-29 12:19:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3108. [2020-10-29 12:19:58,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3108 states. [2020-10-29 12:19:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4476 transitions. [2020-10-29 12:19:58,764 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4476 transitions. Word has length 89 [2020-10-29 12:19:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:58,766 INFO L481 AbstractCegarLoop]: Abstraction has 3108 states and 4476 transitions. [2020-10-29 12:19:58,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4476 transitions. [2020-10-29 12:19:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 12:19:58,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:58,774 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] [2020-10-29 12:19:58,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:19:58,775 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:58,775 INFO L82 PathProgramCache]: Analyzing trace with hash -343682803, now seen corresponding path program 1 times [2020-10-29 12:19:58,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:58,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718637507] [2020-10-29 12:19:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:02,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:20:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 12:20:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:03,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:20:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:04,200 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:04,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:04,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:04,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:20:04,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:04,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:04,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:20:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:20:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:20:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:20:04,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:20:04,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 12:20:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:04,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:04,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718637507] [2020-10-29 12:20:04,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:04,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:04,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233020872] [2020-10-29 12:20:04,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:04,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:04,610 INFO L87 Difference]: Start difference. First operand 3108 states and 4476 transitions. Second operand 9 states. [2020-10-29 12:20:04,910 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:05,233 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:20:05,579 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:20:06,391 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:20:07,296 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:10,656 INFO L93 Difference]: Finished difference Result 10475 states and 15267 transitions. [2020-10-29 12:20:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:10,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-29 12:20:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:10,696 INFO L225 Difference]: With dead ends: 10475 [2020-10-29 12:20:10,696 INFO L226 Difference]: Without dead ends: 7643 [2020-10-29 12:20:10,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:20:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2020-10-29 12:20:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 7069. [2020-10-29 12:20:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7069 states. [2020-10-29 12:20:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 10123 transitions. [2020-10-29 12:20:11,227 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 10123 transitions. Word has length 90 [2020-10-29 12:20:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:11,227 INFO L481 AbstractCegarLoop]: Abstraction has 7069 states and 10123 transitions. [2020-10-29 12:20:11,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 10123 transitions. [2020-10-29 12:20:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 12:20:11,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:11,241 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] [2020-10-29 12:20:11,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:20:11,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1316883118, now seen corresponding path program 1 times [2020-10-29 12:20:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:11,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032778433] [2020-10-29 12:20:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 12:20:16,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:20:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,630 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:16,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:16,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:20:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:20:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:20:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:16,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:20:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:16,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:16,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:16,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:16,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:16,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:16,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 12:20:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:20:17,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:20:17,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 12:20:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:17,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032778433] [2020-10-29 12:20:17,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:17,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:17,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965262861] [2020-10-29 12:20:17,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:17,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:17,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:17,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:17,074 INFO L87 Difference]: Start difference. First operand 7069 states and 10123 transitions. Second operand 10 states. [2020-10-29 12:20:17,385 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:17,829 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:18,323 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:18,672 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:20:19,013 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:20:19,370 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:20:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:23,948 INFO L93 Difference]: Finished difference Result 11307 states and 15984 transitions. [2020-10-29 12:20:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:20:23,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-29 12:20:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:24,010 INFO L225 Difference]: With dead ends: 11307 [2020-10-29 12:20:24,010 INFO L226 Difference]: Without dead ends: 9904 [2020-10-29 12:20:24,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:20:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9904 states. [2020-10-29 12:20:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9904 to 8196. [2020-10-29 12:20:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8196 states. [2020-10-29 12:20:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 11765 transitions. [2020-10-29 12:20:24,727 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 11765 transitions. Word has length 90 [2020-10-29 12:20:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:24,728 INFO L481 AbstractCegarLoop]: Abstraction has 8196 states and 11765 transitions. [2020-10-29 12:20:24,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:20:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 11765 transitions. [2020-10-29 12:20:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:20:24,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:24,747 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] [2020-10-29 12:20:24,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:20:24,747 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:24,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1289322372, now seen corresponding path program 1 times [2020-10-29 12:20:24,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:24,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390547426] [2020-10-29 12:20:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:24,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:26,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:20:26,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:26,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-10-29 12:20:26,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:26,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:20:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:20:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:26,972 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:26,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:20:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:20:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:27,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:27,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:27,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:20:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:20:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:20:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:20:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:20:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:27,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:27,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:27,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390547426] [2020-10-29 12:20:27,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:27,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884822935] [2020-10-29 12:20:27,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:27,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:27,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:27,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:27,299 INFO L87 Difference]: Start difference. First operand 8196 states and 11765 transitions. Second operand 9 states. [2020-10-29 12:20:27,597 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:30,439 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:20:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:30,972 INFO L93 Difference]: Finished difference Result 17918 states and 26170 transitions. [2020-10-29 12:20:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:20:30,972 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-29 12:20:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:31,017 INFO L225 Difference]: With dead ends: 17918 [2020-10-29 12:20:31,018 INFO L226 Difference]: Without dead ends: 12322 [2020-10-29 12:20:31,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:20:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2020-10-29 12:20:31,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 11309. [2020-10-29 12:20:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11309 states. [2020-10-29 12:20:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11309 states to 11309 states and 16239 transitions. [2020-10-29 12:20:31,980 INFO L78 Accepts]: Start accepts. Automaton has 11309 states and 16239 transitions. Word has length 91 [2020-10-29 12:20:31,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:31,981 INFO L481 AbstractCegarLoop]: Abstraction has 11309 states and 16239 transitions. [2020-10-29 12:20:31,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 11309 states and 16239 transitions. [2020-10-29 12:20:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:20:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:32,006 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] [2020-10-29 12:20:32,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:20:32,006 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:32,009 INFO L82 PathProgramCache]: Analyzing trace with hash 899356801, now seen corresponding path program 1 times [2020-10-29 12:20:32,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:32,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225399339] [2020-10-29 12:20:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:20:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,328 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-29 12:20:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:20:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:20:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:20:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:37,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:20:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:20:37,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:37,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:37,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:20:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:37,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:37,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225399339] [2020-10-29 12:20:37,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:37,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:37,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098484027] [2020-10-29 12:20:37,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:37,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:37,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:37,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:37,686 INFO L87 Difference]: Start difference. First operand 11309 states and 16239 transitions. Second operand 10 states. [2020-10-29 12:20:38,010 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:38,472 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:38,844 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:20:39,165 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:39,521 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:20:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:44,283 INFO L93 Difference]: Finished difference Result 24721 states and 35915 transitions. [2020-10-29 12:20:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:44,284 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-10-29 12:20:44,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:44,350 INFO L225 Difference]: With dead ends: 24721 [2020-10-29 12:20:44,350 INFO L226 Difference]: Without dead ends: 13672 [2020-10-29 12:20:44,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:20:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13672 states. [2020-10-29 12:20:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13672 to 12812. [2020-10-29 12:20:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12812 states. [2020-10-29 12:20:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12812 states to 12812 states and 18450 transitions. [2020-10-29 12:20:45,559 INFO L78 Accepts]: Start accepts. Automaton has 12812 states and 18450 transitions. Word has length 93 [2020-10-29 12:20:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:45,559 INFO L481 AbstractCegarLoop]: Abstraction has 12812 states and 18450 transitions. [2020-10-29 12:20:45,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:20:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12812 states and 18450 transitions. [2020-10-29 12:20:45,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:20:45,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:45,575 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] [2020-10-29 12:20:45,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:20:45,575 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash -149436527, now seen corresponding path program 1 times [2020-10-29 12:20:45,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:45,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335426697] [2020-10-29 12:20:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:45,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:50,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:50,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:20:50,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:50,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:20:50,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:50,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:50,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:20:50,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:50,903 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:50,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:50,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:50,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:50,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:50,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:50,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:20:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:51,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:51,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:20:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 12:20:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:51,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:51,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:51,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335426697] [2020-10-29 12:20:51,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:51,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:51,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592947306] [2020-10-29 12:20:51,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:51,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:51,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:51,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:51,249 INFO L87 Difference]: Start difference. First operand 12812 states and 18450 transitions. Second operand 9 states. [2020-10-29 12:20:51,633 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:51,959 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:20:52,347 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:20:53,277 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:56,445 INFO L93 Difference]: Finished difference Result 17254 states and 24681 transitions. [2020-10-29 12:20:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:20:56,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-29 12:20:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:56,486 INFO L225 Difference]: With dead ends: 17254 [2020-10-29 12:20:56,487 INFO L226 Difference]: Without dead ends: 13771 [2020-10-29 12:20:56,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:20:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13771 states. [2020-10-29 12:20:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13771 to 12903. [2020-10-29 12:20:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12903 states. [2020-10-29 12:20:57,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12903 states to 12903 states and 18482 transitions. [2020-10-29 12:20:57,503 INFO L78 Accepts]: Start accepts. Automaton has 12903 states and 18482 transitions. Word has length 94 [2020-10-29 12:20:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:57,503 INFO L481 AbstractCegarLoop]: Abstraction has 12903 states and 18482 transitions. [2020-10-29 12:20:57,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12903 states and 18482 transitions. [2020-10-29 12:20:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 12:20:57,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:57,519 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] [2020-10-29 12:20:57,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:20:57,520 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash 401642022, now seen corresponding path program 1 times [2020-10-29 12:20:57,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:57,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701818550] [2020-10-29 12:20:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:57,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:57,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 12:21:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:21:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:02,856 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:02,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:02,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:02,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:02,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:02,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:02,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:21:02,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:21:02,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:21:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:03,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:03,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:21:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:03,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:03,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 12:21:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:03,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 12:21:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:03,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:03,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:03,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701818550] [2020-10-29 12:21:03,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:03,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:21:03,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077836788] [2020-10-29 12:21:03,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:21:03,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:03,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:21:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:21:03,162 INFO L87 Difference]: Start difference. First operand 12903 states and 18482 transitions. Second operand 8 states. [2020-10-29 12:21:03,466 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:03,954 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:21:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:07,990 INFO L93 Difference]: Finished difference Result 33550 states and 49292 transitions. [2020-10-29 12:21:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:21:07,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 12:21:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:08,075 INFO L225 Difference]: With dead ends: 33550 [2020-10-29 12:21:08,076 INFO L226 Difference]: Without dead ends: 23540 [2020-10-29 12:21:08,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:21:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23540 states. [2020-10-29 12:21:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23540 to 22987. [2020-10-29 12:21:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22987 states. [2020-10-29 12:21:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22987 states to 22987 states and 32969 transitions. [2020-10-29 12:21:09,881 INFO L78 Accepts]: Start accepts. Automaton has 22987 states and 32969 transitions. Word has length 95 [2020-10-29 12:21:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:09,881 INFO L481 AbstractCegarLoop]: Abstraction has 22987 states and 32969 transitions. [2020-10-29 12:21:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:21:09,881 INFO L276 IsEmpty]: Start isEmpty. Operand 22987 states and 32969 transitions. [2020-10-29 12:21:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:21:09,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:09,908 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] [2020-10-29 12:21:09,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:21:09,908 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:09,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:09,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1359720450, now seen corresponding path program 1 times [2020-10-29 12:21:09,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:09,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522383797] [2020-10-29 12:21:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:21:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,240 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:21:15,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:21:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:21:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:15,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:21:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:21:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:21:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:15,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:21:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:21:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:15,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:15,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:15,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:15,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522383797] [2020-10-29 12:21:15,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:15,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:15,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729867470] [2020-10-29 12:21:15,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:15,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:15,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:15,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:15,489 INFO L87 Difference]: Start difference. First operand 22987 states and 32969 transitions. Second operand 9 states. [2020-10-29 12:21:15,818 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:16,107 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:16,410 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:16,715 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:17,551 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:20,871 INFO L93 Difference]: Finished difference Result 48845 states and 69877 transitions. [2020-10-29 12:21:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:21:20,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-29 12:21:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:20,980 INFO L225 Difference]: With dead ends: 48845 [2020-10-29 12:21:20,980 INFO L226 Difference]: Without dead ends: 26172 [2020-10-29 12:21:21,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:21:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26172 states. [2020-10-29 12:21:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26172 to 25358. [2020-10-29 12:21:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25358 states. [2020-10-29 12:21:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25358 states to 25358 states and 36090 transitions. [2020-10-29 12:21:22,930 INFO L78 Accepts]: Start accepts. Automaton has 25358 states and 36090 transitions. Word has length 96 [2020-10-29 12:21:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:22,930 INFO L481 AbstractCegarLoop]: Abstraction has 25358 states and 36090 transitions. [2020-10-29 12:21:22,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 25358 states and 36090 transitions. [2020-10-29 12:21:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:21:22,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:22,951 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] [2020-10-29 12:21:22,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:21:22,951 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:22,952 INFO L82 PathProgramCache]: Analyzing trace with hash -441050458, now seen corresponding path program 1 times [2020-10-29 12:21:22,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:22,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237857095] [2020-10-29 12:21:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:21:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:21:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 12:21:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:27,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:21:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:21:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:21:28,294 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:21:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:21:28,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:21:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:21:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:21:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:21:28,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:21:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:21:28,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:21:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:28,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:28,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237857095] [2020-10-29 12:21:28,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:28,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:21:28,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859016503] [2020-10-29 12:21:28,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:21:28,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:28,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:21:28,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:21:28,652 INFO L87 Difference]: Start difference. First operand 25358 states and 36090 transitions. Second operand 14 states. [2020-10-29 12:21:29,289 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:21:29,587 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:30,194 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:21:31,006 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:21:31,200 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:21:31,621 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:21:31,832 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:21:32,022 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-29 12:21:32,220 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:21:32,680 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:21:34,189 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:21:34,728 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-29 12:21:35,108 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-29 12:21:35,323 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:21:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:35,907 INFO L93 Difference]: Finished difference Result 37450 states and 52896 transitions. [2020-10-29 12:21:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:21:35,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-29 12:21:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:36,034 INFO L225 Difference]: With dead ends: 37450 [2020-10-29 12:21:36,034 INFO L226 Difference]: Without dead ends: 31068 [2020-10-29 12:21:36,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:21:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31068 states. [2020-10-29 12:21:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31068 to 26298. [2020-10-29 12:21:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26298 states. [2020-10-29 12:21:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26298 states to 26298 states and 37042 transitions. [2020-10-29 12:21:38,330 INFO L78 Accepts]: Start accepts. Automaton has 26298 states and 37042 transitions. Word has length 96 [2020-10-29 12:21:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:38,331 INFO L481 AbstractCegarLoop]: Abstraction has 26298 states and 37042 transitions. [2020-10-29 12:21:38,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:21:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 26298 states and 37042 transitions. [2020-10-29 12:21:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 12:21:38,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:38,356 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] [2020-10-29 12:21:38,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:21:38,357 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:38,357 INFO L82 PathProgramCache]: Analyzing trace with hash 945152936, now seen corresponding path program 1 times [2020-10-29 12:21:38,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:38,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752161104] [2020-10-29 12:21:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2098 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 12:21:40,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:21:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:40,754 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:40,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:40,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:40,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:21:40,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:21:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:40,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:21:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:21:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:21:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:21:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:41,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:21:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-29 12:21:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:41,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752161104] [2020-10-29 12:21:41,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:41,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:21:41,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181637525] [2020-10-29 12:21:41,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:21:41,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:41,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:21:41,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:21:41,112 INFO L87 Difference]: Start difference. First operand 26298 states and 37042 transitions. Second operand 13 states. [2020-10-29 12:21:41,448 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:42,063 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:42,357 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:21:44,979 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:21:45,291 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:46,118 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:21:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:55,306 INFO L93 Difference]: Finished difference Result 123993 states and 178809 transitions. [2020-10-29 12:21:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 12:21:55,306 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-10-29 12:21:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:55,928 INFO L225 Difference]: With dead ends: 123993 [2020-10-29 12:21:55,928 INFO L226 Difference]: Without dead ends: 103915 [2020-10-29 12:21:56,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 12:21:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103915 states. [2020-10-29 12:22:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103915 to 98151. [2020-10-29 12:22:03,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98151 states. [2020-10-29 12:22:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98151 states to 98151 states and 139767 transitions. [2020-10-29 12:22:04,488 INFO L78 Accepts]: Start accepts. Automaton has 98151 states and 139767 transitions. Word has length 96 [2020-10-29 12:22:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:04,491 INFO L481 AbstractCegarLoop]: Abstraction has 98151 states and 139767 transitions. [2020-10-29 12:22:04,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:22:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 98151 states and 139767 transitions. [2020-10-29 12:22:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 12:22:04,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:04,524 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] [2020-10-29 12:22:04,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:22:04,524 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:04,525 INFO L82 PathProgramCache]: Analyzing trace with hash 979192996, now seen corresponding path program 1 times [2020-10-29 12:22:04,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:04,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608616984] [2020-10-29 12:22:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 12:22:09,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:22:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:09,841 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:09,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:09,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:09,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 12:22:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:22:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:09,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:09,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:09,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:09,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:09,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:22:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:09,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:22:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 12:22:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:10,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-29 12:22:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:10,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:10,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608616984] [2020-10-29 12:22:10,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:10,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:22:10,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819610120] [2020-10-29 12:22:10,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:22:10,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:10,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:22:10,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:22:10,115 INFO L87 Difference]: Start difference. First operand 98151 states and 139767 transitions. Second operand 10 states. [2020-10-29 12:22:10,479 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:18,856 INFO L93 Difference]: Finished difference Result 161266 states and 228177 transitions. [2020-10-29 12:22:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:22:18,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-29 12:22:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:19,498 INFO L225 Difference]: With dead ends: 161266 [2020-10-29 12:22:19,499 INFO L226 Difference]: Without dead ends: 105697 [2020-10-29 12:22:19,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:22:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105697 states.