/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:35:23,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:35:23,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:35:23,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:35:23,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:35:23,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:35:23,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:35:23,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:35:23,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:35:23,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:35:23,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:35:23,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:35:23,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:35:23,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:35:23,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:35:23,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:35:23,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:35:23,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:35:23,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:35:23,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:35:23,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:35:23,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:35:23,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:35:23,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:35:23,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:35:23,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:35:23,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:35:23,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:35:23,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:35:23,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:35:23,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:35:23,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:35:23,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:35:23,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:35:23,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:35:23,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:35:23,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:35:23,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:35:23,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:35:23,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:35:23,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:35:23,547 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 [2020-10-13 15:35:23,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:35:23,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:35:23,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:35:23,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:35:23,590 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:35:23,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:35:23,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:35:23,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:35:23,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:35:23,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:35:23,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:35:23,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:35:23,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:35:23,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:35:23,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:35:23,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:35:23,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:35:23,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:35:23,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:35:23,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:35:23,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:35:23,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:35:23,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:35:23,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:35:23,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:35:23,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:35:23,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:35:23,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:35:23,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:35:23,956 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:35:23,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-1.c [2020-10-13 15:35:24,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e263c79/a4543940df604990affb2b0eb97bcecf/FLAG4f92b7952 [2020-10-13 15:35:24,587 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:35:24,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-1.c [2020-10-13 15:35:24,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e263c79/a4543940df604990affb2b0eb97bcecf/FLAG4f92b7952 [2020-10-13 15:35:24,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9e263c79/a4543940df604990affb2b0eb97bcecf [2020-10-13 15:35:24,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:35:24,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:35:24,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:24,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:35:24,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:35:24,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:24" (1/1) ... [2020-10-13 15:35:24,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126dddf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:24, skipping insertion in model container [2020-10-13 15:35:24,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:24" (1/1) ... [2020-10-13 15:35:24,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:35:24,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:35:25,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:25,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:35:25,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:25,699 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:35:25,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25 WrapperNode [2020-10-13 15:35:25,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:25,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:35:25,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:35:25,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:35:25,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (1/1) ... [2020-10-13 15:35:25,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:35:25,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:35:25,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:35:25,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:35:25,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (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 [2020-10-13 15:35:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:35:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:35:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:35:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:35:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:35:25,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:35:25,916 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:35:25,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:35:25,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:35:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:35:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:35:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:35:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:35:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:35:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:35:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:35:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:35:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:35:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:35:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:35:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:35:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:35:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:35:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:35:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:35:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:35:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:35:26,344 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:35:26,919 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:35:26,919 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:35:26,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:35:26,941 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:35:26,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:26 BoogieIcfgContainer [2020-10-13 15:35:26,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:35:26,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:35:26,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:35:26,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:35:26,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:35:24" (1/3) ... [2020-10-13 15:35:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:26, skipping insertion in model container [2020-10-13 15:35:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25" (2/3) ... [2020-10-13 15:35:26,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:26, skipping insertion in model container [2020-10-13 15:35:26,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:26" (3/3) ... [2020-10-13 15:35:26,953 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.09.i.cil-1.c [2020-10-13 15:35:26,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:35:26,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:35:26,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:35:27,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:35:27,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:35:27,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:35:27,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:35:27,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:35:27,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:35:27,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:35:27,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:35:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:35:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 15:35:27,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:27,037 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] [2020-10-13 15:35:27,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-13 15:35:27,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:27,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409195415] [2020-10-13 15:35:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:35:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-13 15:35:28,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:35:28,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:28,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:35:28,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:28,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409195415] [2020-10-13 15:35:28,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:28,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:28,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416543696] [2020-10-13 15:35:28,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:28,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:28,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:28,854 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:35:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:29,793 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:35:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:29,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-13 15:35:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:29,808 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:35:29,808 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:35:29,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:35:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:35:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:35:29,865 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 41 [2020-10-13 15:35:29,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:29,866 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:35:29,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:35:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:35:29,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:29,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:29,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:35:29,869 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:29,870 INFO L82 PathProgramCache]: Analyzing trace with hash -495950029, now seen corresponding path program 1 times [2020-10-13 15:35:29,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:29,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504892437] [2020-10-13 15:35:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:30,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 15:35:30,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:30,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-13 15:35:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:35:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:30,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:30,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:30,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:30,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504892437] [2020-10-13 15:35:30,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:30,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:30,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480347829] [2020-10-13 15:35:30,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:30,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:30,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:30,955 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:35:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:31,624 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:35:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:31,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 15:35:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:31,628 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:35:31,628 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:35:31,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:35:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:35:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:35:31,650 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-13 15:35:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:31,651 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:35:31,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:35:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:31,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:31,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:31,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:35:31,657 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash -556125065, now seen corresponding path program 1 times [2020-10-13 15:35:31,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:31,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784086086] [2020-10-13 15:35:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:35:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:36,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:36,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:36,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:36,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:36,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784086086] [2020-10-13 15:35:36,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:36,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:36,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703767276] [2020-10-13 15:35:36,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:36,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:36,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:36,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:36,772 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:35:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:37,450 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:35:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:37,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:37,453 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:35:37,453 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:35:37,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:35:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:35:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:35:37,467 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 55 [2020-10-13 15:35:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:37,468 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:35:37,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:35:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:37,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:37,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:37,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:35:37,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:37,471 INFO L82 PathProgramCache]: Analyzing trace with hash 309454091, now seen corresponding path program 1 times [2020-10-13 15:35:37,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:37,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263668470] [2020-10-13 15:35:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:37,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:39,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:42,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:42,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:35:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:35:42,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:35:42,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:42,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:42,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:42,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:42,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263668470] [2020-10-13 15:35:42,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:42,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:42,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132791272] [2020-10-13 15:35:42,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:42,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:42,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:42,630 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:35:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:43,250 INFO L93 Difference]: Finished difference Result 289 states and 439 transitions. [2020-10-13 15:35:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:35:43,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 15:35:43,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:43,253 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:35:43,253 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:35:43,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:35:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:35:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 15:35:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 241 transitions. [2020-10-13 15:35:43,263 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 241 transitions. Word has length 55 [2020-10-13 15:35:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:43,264 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 241 transitions. [2020-10-13 15:35:43,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 241 transitions. [2020-10-13 15:35:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:43,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:43,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:43,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:35:43,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1471564928, now seen corresponding path program 1 times [2020-10-13 15:35:43,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:43,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436448134] [2020-10-13 15:35:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-13 15:35:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:35:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:43,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:43,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:43,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436448134] [2020-10-13 15:35:43,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:43,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:43,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613948881] [2020-10-13 15:35:43,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:43,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:43,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:43,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:43,782 INFO L87 Difference]: Start difference. First operand 161 states and 241 transitions. Second operand 5 states. [2020-10-13 15:35:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:44,620 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-10-13 15:35:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:44,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:44,623 INFO L225 Difference]: With dead ends: 320 [2020-10-13 15:35:44,623 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 15:35:44,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 15:35:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2020-10-13 15:35:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 240 transitions. [2020-10-13 15:35:44,652 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 240 transitions. Word has length 55 [2020-10-13 15:35:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:44,655 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 240 transitions. [2020-10-13 15:35:44,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:44,655 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 240 transitions. [2020-10-13 15:35:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:44,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:44,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:44,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:35:44,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:44,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:44,657 INFO L82 PathProgramCache]: Analyzing trace with hash -171966527, now seen corresponding path program 1 times [2020-10-13 15:35:44,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:44,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497701197] [2020-10-13 15:35:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:45,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-13 15:35:45,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:45,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:35:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:45,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:45,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:45,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497701197] [2020-10-13 15:35:45,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:45,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:45,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422604332] [2020-10-13 15:35:45,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:45,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:45,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:45,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:45,325 INFO L87 Difference]: Start difference. First operand 161 states and 240 transitions. Second operand 5 states. [2020-10-13 15:35:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:45,990 INFO L93 Difference]: Finished difference Result 319 states and 475 transitions. [2020-10-13 15:35:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:45,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:45,992 INFO L225 Difference]: With dead ends: 319 [2020-10-13 15:35:45,992 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:35:45,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:35:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-13 15:35:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2020-10-13 15:35:46,007 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 55 [2020-10-13 15:35:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:46,007 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2020-10-13 15:35:46,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:46,007 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2020-10-13 15:35:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:35:46,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:46,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:46,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:35:46,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash -462148946, now seen corresponding path program 1 times [2020-10-13 15:35:46,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:46,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454534446] [2020-10-13 15:35:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:35:51,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:51,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:35:51,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:51,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:51,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:51,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:51,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454534446] [2020-10-13 15:35:51,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:51,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:51,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270201132] [2020-10-13 15:35:51,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:51,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:51,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:51,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:51,139 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand 5 states. [2020-10-13 15:35:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:51,742 INFO L93 Difference]: Finished difference Result 310 states and 463 transitions. [2020-10-13 15:35:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:51,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 15:35:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:51,746 INFO L225 Difference]: With dead ends: 310 [2020-10-13 15:35:51,746 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:35:51,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:35:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2020-10-13 15:35:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 238 transitions. [2020-10-13 15:35:51,754 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 238 transitions. Word has length 56 [2020-10-13 15:35:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:51,755 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 238 transitions. [2020-10-13 15:35:51,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 238 transitions. [2020-10-13 15:35:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:35:51,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:51,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:51,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:35:51,761 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1249075170, now seen corresponding path program 1 times [2020-10-13 15:35:51,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:51,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056093886] [2020-10-13 15:35:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:56,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:35:56,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:56,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:56,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 27 [2020-10-13 15:35:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:35:56,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056093886] [2020-10-13 15:35:56,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:56,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:56,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187136132] [2020-10-13 15:35:56,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:56,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:56,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:56,935 INFO L87 Difference]: Start difference. First operand 161 states and 238 transitions. Second operand 6 states. [2020-10-13 15:35:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:58,574 INFO L93 Difference]: Finished difference Result 426 states and 643 transitions. [2020-10-13 15:35:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:35:58,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 15:35:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:58,578 INFO L225 Difference]: With dead ends: 426 [2020-10-13 15:35:58,578 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:35:58,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:35:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:35:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 178. [2020-10-13 15:35:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:35:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2020-10-13 15:35:58,590 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 56 [2020-10-13 15:35:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:58,590 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2020-10-13 15:35:58,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2020-10-13 15:35:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:35:58,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:58,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:58,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:35:58,592 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1531915781, now seen corresponding path program 1 times [2020-10-13 15:35:58,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:58,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604642260] [2020-10-13 15:35:58,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4275 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:02,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:02,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:02,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:02,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:02,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:02,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:02,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:02,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604642260] [2020-10-13 15:36:02,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:02,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:02,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098246083] [2020-10-13 15:36:02,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:02,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:02,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:02,949 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand 5 states. [2020-10-13 15:36:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:03,652 INFO L93 Difference]: Finished difference Result 344 states and 516 transitions. [2020-10-13 15:36:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:03,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 15:36:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:03,654 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:03,655 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:03,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:03,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:03,662 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:03,663 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:03,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:36:03,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:03,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:03,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:36:03,664 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:03,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1657674672, now seen corresponding path program 1 times [2020-10-13 15:36:03,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:03,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278292504] [2020-10-13 15:36:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:03,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:08,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:08,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:36:08,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:08,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:08,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278292504] [2020-10-13 15:36:08,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:08,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:08,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555572466] [2020-10-13 15:36:08,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:08,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:08,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:08,774 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 6 states. [2020-10-13 15:36:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:09,390 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2020-10-13 15:36:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:09,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 15:36:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:09,394 INFO L225 Difference]: With dead ends: 350 [2020-10-13 15:36:09,394 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:36:09,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:36:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:36:09,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-10-13 15:36:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:09,403 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:09,403 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:09,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:09,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:09,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:09,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:36:09,405 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:09,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:09,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1616983895, now seen corresponding path program 1 times [2020-10-13 15:36:09,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:09,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65386807] [2020-10-13 15:36:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:11,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:12,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2923 [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:12,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:12,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:12,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:12,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:12,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:12,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:12,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:12,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65386807] [2020-10-13 15:36:12,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:12,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:12,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212509783] [2020-10-13 15:36:12,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:12,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:12,398 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 5 states. [2020-10-13 15:36:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:12,963 INFO L93 Difference]: Finished difference Result 344 states and 515 transitions. [2020-10-13 15:36:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:12,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:12,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:12,966 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:12,966 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:12,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:12,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2020-10-13 15:36:12,973 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 58 [2020-10-13 15:36:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:12,973 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2020-10-13 15:36:12,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2020-10-13 15:36:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:12,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:12,974 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:12,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:36:12,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:12,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-13 15:36:12,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:12,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18502695] [2020-10-13 15:36:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:36:13,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:13,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18502695] [2020-10-13 15:36:13,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:13,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:13,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214920743] [2020-10-13 15:36:13,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:13,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:13,356 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand 5 states. [2020-10-13 15:36:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:13,933 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:36:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:13,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:13,936 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:36:13,936 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 15:36:13,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 15:36:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-13 15:36:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 15:36:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2020-10-13 15:36:13,944 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 58 [2020-10-13 15:36:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:13,944 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2020-10-13 15:36:13,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2020-10-13 15:36:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:13,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:13,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:36:13,946 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:13,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1254155939, now seen corresponding path program 1 times [2020-10-13 15:36:13,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:13,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191582558] [2020-10-13 15:36:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:18,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:18,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:18,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:36:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:36:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:19,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:19,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:19,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:19,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191582558] [2020-10-13 15:36:19,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:19,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:19,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763790428] [2020-10-13 15:36:19,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:19,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:19,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:19,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:19,024 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2020-10-13 15:36:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:20,111 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-10-13 15:36:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:20,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 15:36:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:20,114 INFO L225 Difference]: With dead ends: 487 [2020-10-13 15:36:20,115 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:36:20,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:36:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:36:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 196. [2020-10-13 15:36:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:36:20,122 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 58 [2020-10-13 15:36:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:20,123 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:36:20,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:36:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:36:20,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:20,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:20,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:36:20,124 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1241162730, now seen corresponding path program 1 times [2020-10-13 15:36:20,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:20,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014533777] [2020-10-13 15:36:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:21,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:36:23,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:23,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2913 [2020-10-13 15:36:23,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:23,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:23,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:23,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014533777] [2020-10-13 15:36:23,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:23,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:23,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139698609] [2020-10-13 15:36:23,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:23,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:23,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:23,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:23,105 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:36:23,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:23,598 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:36:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:23,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:36:23,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:23,600 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:36:23,600 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:36:23,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:36:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:36:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:36:23,608 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 59 [2020-10-13 15:36:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:23,609 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:36:23,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:36:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:36:23,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:23,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:23,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:36:23,610 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash 740008964, now seen corresponding path program 1 times [2020-10-13 15:36:23,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:23,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153559121] [2020-10-13 15:36:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:24,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:24,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153559121] [2020-10-13 15:36:24,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:24,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:24,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747571977] [2020-10-13 15:36:24,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:24,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:24,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:24,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:24,074 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:36:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:24,643 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-13 15:36:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:24,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:36:24,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:24,645 INFO L225 Difference]: With dead ends: 397 [2020-10-13 15:36:24,645 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:36:24,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:36:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2020-10-13 15:36:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:36:24,659 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 71 [2020-10-13 15:36:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:24,660 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:36:24,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:36:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:24,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:24,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:24,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:36:24,662 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:24,662 INFO L82 PathProgramCache]: Analyzing trace with hash -896101946, now seen corresponding path program 1 times [2020-10-13 15:36:24,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:24,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152636344] [2020-10-13 15:36:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:29,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:29,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:36:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:36:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:29,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:29,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:29,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152636344] [2020-10-13 15:36:29,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:29,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:29,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956961430] [2020-10-13 15:36:29,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:29,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:29,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:29,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:29,731 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:36:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:30,272 INFO L93 Difference]: Finished difference Result 387 states and 579 transitions. [2020-10-13 15:36:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:30,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:30,274 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:36:30,274 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:36:30,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:36:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 196. [2020-10-13 15:36:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:36:30,284 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 72 [2020-10-13 15:36:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:30,285 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:36:30,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:36:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:30,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:30,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:30,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:36:30,286 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1131588047, now seen corresponding path program 1 times [2020-10-13 15:36:30,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:30,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681642131] [2020-10-13 15:36:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-13 15:36:30,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:30,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:30,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:30,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:30,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:30,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:30,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:30,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681642131] [2020-10-13 15:36:30,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:30,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:30,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666666258] [2020-10-13 15:36:30,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:30,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:30,808 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:36:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:31,363 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:36:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:31,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:31,365 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:36:31,366 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:36:31,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:36:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:36:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:36:31,373 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 72 [2020-10-13 15:36:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:31,373 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:36:31,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:36:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:31,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:31,374 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:31,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:36:31,375 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:31,375 INFO L82 PathProgramCache]: Analyzing trace with hash -511943408, now seen corresponding path program 1 times [2020-10-13 15:36:31,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:31,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348665095] [2020-10-13 15:36:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:31,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:31,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:31,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348665095] [2020-10-13 15:36:31,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:31,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:31,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458891014] [2020-10-13 15:36:31,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:31,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:31,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:31,776 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:36:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:32,295 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:36:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:32,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:32,298 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:32,298 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:32,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:36:32,306 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 72 [2020-10-13 15:36:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:32,306 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:36:32,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:36:32,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:36:32,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:32,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:32,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:36:32,308 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:32,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:32,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1883469631, now seen corresponding path program 1 times [2020-10-13 15:36:32,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:32,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36027118] [2020-10-13 15:36:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:36:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:36:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:37,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:37,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:37,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:37,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36027118] [2020-10-13 15:36:37,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:37,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:37,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15739963] [2020-10-13 15:36:37,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:37,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:37,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:37,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:37,428 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:36:37,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:37,965 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:36:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:37,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 15:36:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:37,968 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:37,968 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:37,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:36:37,976 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 73 [2020-10-13 15:36:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:37,976 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:36:37,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:36:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 15:36:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:37,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:37,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:36:37,977 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1832183926, now seen corresponding path program 1 times [2020-10-13 15:36:37,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:37,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422089041] [2020-10-13 15:36:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:39,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:43,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:36:43,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:36:43,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:43,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:43,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:43,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422089041] [2020-10-13 15:36:43,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:43,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:43,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995523485] [2020-10-13 15:36:43,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:43,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:43,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:43,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:43,058 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:36:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:43,608 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:36:43,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:43,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 15:36:43,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:43,611 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:43,611 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:43,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:36:43,618 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 74 [2020-10-13 15:36:43,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:43,619 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:36:43,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:36:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:36:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:43,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:43,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:36:43,620 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1959605498, now seen corresponding path program 1 times [2020-10-13 15:36:43,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:43,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099505466] [2020-10-13 15:36:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:48,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:48,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:48,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:48,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099505466] [2020-10-13 15:36:48,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:48,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:48,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171775701] [2020-10-13 15:36:48,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:48,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:48,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:48,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:48,687 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:36:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:49,200 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:36:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:49,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-13 15:36:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:49,203 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:49,203 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:49,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:36:49,210 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 75 [2020-10-13 15:36:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:49,210 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:36:49,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:36:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:36:49,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:49,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:49,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:36:49,212 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:49,212 INFO L82 PathProgramCache]: Analyzing trace with hash -2036041243, now seen corresponding path program 1 times [2020-10-13 15:36:49,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:49,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87093217] [2020-10-13 15:36:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:54,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:36:54,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87093217] [2020-10-13 15:36:54,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:54,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:54,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620191322] [2020-10-13 15:36:54,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:54,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:54,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:54,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:54,299 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:36:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:54,800 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:36:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:54,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 15:36:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:54,804 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:36:54,804 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:36:54,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:54,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:36:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:36:54,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:36:54,812 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 76 [2020-10-13 15:36:54,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:54,812 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:36:54,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:36:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:36:54,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:54,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:54,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:36:54,814 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-13 15:36:54,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:54,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218417137] [2020-10-13 15:36:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:54,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:54,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:36:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:55,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:55,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:55,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:55,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:55,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218417137] [2020-10-13 15:36:55,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:55,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:55,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103837984] [2020-10-13 15:36:55,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:55,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:55,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:55,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:55,059 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 5 states. [2020-10-13 15:36:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:55,812 INFO L93 Difference]: Finished difference Result 482 states and 715 transitions. [2020-10-13 15:36:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:55,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:36:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:55,816 INFO L225 Difference]: With dead ends: 482 [2020-10-13 15:36:55,816 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:36:55,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:36:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 225. [2020-10-13 15:36:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 15:36:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-13 15:36:55,831 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 80 [2020-10-13 15:36:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:55,831 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-13 15:36:55,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-13 15:36:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:36:55,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:55,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:55,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:36:55,833 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:55,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1537721727, now seen corresponding path program 1 times [2020-10-13 15:36:55,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:55,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126556892] [2020-10-13 15:36:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:36:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:56,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:56,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126556892] [2020-10-13 15:36:56,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:56,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:56,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121658277] [2020-10-13 15:36:56,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:56,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:56,443 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 5 states. [2020-10-13 15:36:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:57,103 INFO L93 Difference]: Finished difference Result 484 states and 730 transitions. [2020-10-13 15:36:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:57,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:36:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:57,105 INFO L225 Difference]: With dead ends: 484 [2020-10-13 15:36:57,105 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:36:57,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:57,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:36:57,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-13 15:36:57,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:36:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 377 transitions. [2020-10-13 15:36:57,117 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 377 transitions. Word has length 80 [2020-10-13 15:36:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:57,118 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 377 transitions. [2020-10-13 15:36:57,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 377 transitions. [2020-10-13 15:36:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:36:57,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:57,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:36:57,120 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1894533686, now seen corresponding path program 1 times [2020-10-13 15:36:57,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:57,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068398364] [2020-10-13 15:36:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:36:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:57,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:57,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068398364] [2020-10-13 15:36:57,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:57,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:57,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137147858] [2020-10-13 15:36:57,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:57,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:57,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:57,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:57,459 INFO L87 Difference]: Start difference. First operand 249 states and 377 transitions. Second operand 5 states. [2020-10-13 15:36:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:58,210 INFO L93 Difference]: Finished difference Result 551 states and 836 transitions. [2020-10-13 15:36:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:58,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:36:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:58,213 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:36:58,213 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:36:58,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:36:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-10-13 15:36:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:36:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-13 15:36:58,223 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 81 [2020-10-13 15:36:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:58,223 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-13 15:36:58,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-13 15:36:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:36:58,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:58,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:58,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:36:58,225 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash 839608221, now seen corresponding path program 1 times [2020-10-13 15:36:58,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:58,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587063498] [2020-10-13 15:36:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:36:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:58,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:58,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587063498] [2020-10-13 15:36:58,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:58,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:58,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803969094] [2020-10-13 15:36:58,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:58,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:58,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:58,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:58,583 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 5 states. [2020-10-13 15:36:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:59,317 INFO L93 Difference]: Finished difference Result 552 states and 836 transitions. [2020-10-13 15:36:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:59,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:36:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:59,322 INFO L225 Difference]: With dead ends: 552 [2020-10-13 15:36:59,322 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:36:59,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:36:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 260. [2020-10-13 15:36:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 15:36:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-13 15:36:59,333 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 86 [2020-10-13 15:36:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:59,333 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-13 15:36:59,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-13 15:36:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:36:59,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:59,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:36:59,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:36:59,335 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash 251043747, now seen corresponding path program 1 times [2020-10-13 15:36:59,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:59,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012542937] [2020-10-13 15:36:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:36:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:36:59,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012542937] [2020-10-13 15:36:59,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:59,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:59,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495941494] [2020-10-13 15:36:59,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:59,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:59,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:59,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:59,595 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:00,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:00,294 INFO L93 Difference]: Finished difference Result 556 states and 847 transitions. [2020-10-13 15:37:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:00,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:37:00,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:00,296 INFO L225 Difference]: With dead ends: 556 [2020-10-13 15:37:00,296 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:37:00,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:37:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:37:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:37:00,305 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 87 [2020-10-13 15:37:00,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:00,306 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:37:00,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:37:00,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:00,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:00,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:00,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:37:00,307 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash -812579729, now seen corresponding path program 1 times [2020-10-13 15:37:00,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:00,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638172861] [2020-10-13 15:37:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:00,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:00,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:00,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-13 15:37:00,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:00,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:01,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:01,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:01,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:01,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:01,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:01,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638172861] [2020-10-13 15:37:01,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:01,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:01,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675919980] [2020-10-13 15:37:01,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:01,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:01,027 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:37:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:01,725 INFO L93 Difference]: Finished difference Result 557 states and 847 transitions. [2020-10-13 15:37:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:01,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:01,727 INFO L225 Difference]: With dead ends: 557 [2020-10-13 15:37:01,727 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:37:01,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:37:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:37:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:37:01,736 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 93 [2020-10-13 15:37:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:01,736 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:37:01,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:37:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:01,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:01,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:37:01,738 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1115692973, now seen corresponding path program 1 times [2020-10-13 15:37:01,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:01,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42485246] [2020-10-13 15:37:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:02,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42485246] [2020-10-13 15:37:02,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:02,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:02,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273763935] [2020-10-13 15:37:02,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:02,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:02,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:02,399 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:03,055 INFO L93 Difference]: Finished difference Result 532 states and 811 transitions. [2020-10-13 15:37:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:03,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:03,059 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:37:03,059 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:37:03,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:37:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:37:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:37:03,067 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 93 [2020-10-13 15:37:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:03,067 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:37:03,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:37:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:03,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:03,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:03,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:37:03,069 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:03,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:03,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1781711173, now seen corresponding path program 1 times [2020-10-13 15:37:03,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:03,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208464833] [2020-10-13 15:37:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:08,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:08,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:08,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:08,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:08,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208464833] [2020-10-13 15:37:08,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:08,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:08,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862629810] [2020-10-13 15:37:08,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:08,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:08,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:08,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:08,157 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:37:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:08,840 INFO L93 Difference]: Finished difference Result 547 states and 830 transitions. [2020-10-13 15:37:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:08,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:08,843 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:37:08,843 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:08,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 261. [2020-10-13 15:37:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:37:08,853 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 94 [2020-10-13 15:37:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:08,853 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:37:08,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:37:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:08,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:08,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:37:08,855 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:08,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash 245978820, now seen corresponding path program 1 times [2020-10-13 15:37:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:08,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836698645] [2020-10-13 15:37:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:08,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:09,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836698645] [2020-10-13 15:37:09,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:09,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:09,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453065017] [2020-10-13 15:37:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:09,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:09,613 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:37:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:10,276 INFO L93 Difference]: Finished difference Result 545 states and 826 transitions. [2020-10-13 15:37:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:10,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:10,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:10,279 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:37:10,279 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:37:10,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:37:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:37:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:37:10,289 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 94 [2020-10-13 15:37:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:10,289 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:37:10,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:37:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:10,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:10,290 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:10,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:37:10,291 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:10,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1397552635, now seen corresponding path program 1 times [2020-10-13 15:37:10,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:10,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098427217] [2020-10-13 15:37:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:10,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:10,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:10,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:10,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:10,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:10,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:10,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098427217] [2020-10-13 15:37:10,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:10,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:10,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589302131] [2020-10-13 15:37:10,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:10,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:10,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:10,892 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:37:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:11,589 INFO L93 Difference]: Finished difference Result 544 states and 823 transitions. [2020-10-13 15:37:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:11,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:11,593 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:11,593 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:11,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:37:11,601 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 94 [2020-10-13 15:37:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:11,601 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:37:11,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:37:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:11,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:11,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:11,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:37:11,603 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:11,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2134799555, now seen corresponding path program 1 times [2020-10-13 15:37:11,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:11,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955465709] [2020-10-13 15:37:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:16,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:16,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:16,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:16,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955465709] [2020-10-13 15:37:16,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:16,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:16,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640297284] [2020-10-13 15:37:16,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:16,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:16,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:16,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:16,701 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:37:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:17,366 INFO L93 Difference]: Finished difference Result 522 states and 790 transitions. [2020-10-13 15:37:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:17,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:17,369 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:37:17,369 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:37:17,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:17,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:37:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:37:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:37:17,376 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 94 [2020-10-13 15:37:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:17,377 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:37:17,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:37:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:17,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:17,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:17,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:37:17,378 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash -107109562, now seen corresponding path program 1 times [2020-10-13 15:37:17,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:17,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887319886] [2020-10-13 15:37:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:18,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:18,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:18,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:18,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887319886] [2020-10-13 15:37:18,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:18,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:18,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732408029] [2020-10-13 15:37:18,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:18,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:18,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:18,051 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:37:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:18,702 INFO L93 Difference]: Finished difference Result 520 states and 786 transitions. [2020-10-13 15:37:18,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:18,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:18,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:18,704 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:37:18,704 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:37:18,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:37:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:37:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:37:18,712 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 94 [2020-10-13 15:37:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:18,713 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:37:18,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:37:18,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:18,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:18,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:18,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:37:18,714 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:18,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1750641017, now seen corresponding path program 1 times [2020-10-13 15:37:18,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:18,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063390330] [2020-10-13 15:37:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:19,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:19,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:19,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063390330] [2020-10-13 15:37:19,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:19,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:19,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292066112] [2020-10-13 15:37:19,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:19,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:19,307 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:37:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:19,935 INFO L93 Difference]: Finished difference Result 519 states and 783 transitions. [2020-10-13 15:37:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:19,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:19,937 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:19,937 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:19,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:19,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:37:19,944 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 94 [2020-10-13 15:37:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:19,944 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:37:19,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:37:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:19,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:19,945 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:19,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:37:19,946 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash 199387370, now seen corresponding path program 1 times [2020-10-13 15:37:19,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:19,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951207383] [2020-10-13 15:37:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:24,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:25,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951207383] [2020-10-13 15:37:25,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:25,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:25,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666504403] [2020-10-13 15:37:25,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:25,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:25,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:25,036 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:37:25,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:25,731 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2020-10-13 15:37:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:25,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:37:25,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:25,733 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:25,733 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:25,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:37:25,741 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 95 [2020-10-13 15:37:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:25,741 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:37:25,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:37:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:25,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:25,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:25,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:37:25,743 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:25,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2138549416, now seen corresponding path program 1 times [2020-10-13 15:37:25,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:25,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083347161] [2020-10-13 15:37:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:25,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:25,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:27,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:37:30,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:37:30,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:30,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083347161] [2020-10-13 15:37:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:30,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33011035] [2020-10-13 15:37:30,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:30,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:30,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:30,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:30,842 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:37:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:31,461 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2020-10-13 15:37:31,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:31,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:37:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:31,463 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:31,463 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:31,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:37:31,471 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 95 [2020-10-13 15:37:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:31,472 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:37:31,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:37:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:37:31,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:31,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:31,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:37:31,473 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:31,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1795840831, now seen corresponding path program 1 times [2020-10-13 15:37:31,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:31,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678725517] [2020-10-13 15:37:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:31,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:36,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:36,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678725517] [2020-10-13 15:37:36,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:36,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:36,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436836157] [2020-10-13 15:37:36,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:36,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:36,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:36,568 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:37:37,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:37,276 INFO L93 Difference]: Finished difference Result 544 states and 811 transitions. [2020-10-13 15:37:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:37,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:37:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:37,279 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:37,279 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:37,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:37:37,286 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 96 [2020-10-13 15:37:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:37,286 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:37:37,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:37:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:37:37,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:37,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:37,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:37:37,288 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:37,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:37,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1780322113, now seen corresponding path program 1 times [2020-10-13 15:37:37,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:37,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009066672] [2020-10-13 15:37:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:42,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:42,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:42,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:42,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:42,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009066672] [2020-10-13 15:37:42,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:42,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:42,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366083313] [2020-10-13 15:37:42,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:42,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:42,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:42,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:42,380 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:37:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:43,016 INFO L93 Difference]: Finished difference Result 519 states and 775 transitions. [2020-10-13 15:37:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:43,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:37:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:43,019 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:43,019 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:43,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:37:43,026 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 96 [2020-10-13 15:37:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:43,027 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:37:43,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:37:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:37:43,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:43,028 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:43,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:37:43,028 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:43,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1535744027, now seen corresponding path program 1 times [2020-10-13 15:37:43,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:43,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707295410] [2020-10-13 15:37:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:48,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:48,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:48,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:48,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:48,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707295410] [2020-10-13 15:37:48,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:48,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:48,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560194127] [2020-10-13 15:37:48,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:48,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:48,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:48,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:48,118 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:37:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:48,811 INFO L93 Difference]: Finished difference Result 544 states and 807 transitions. [2020-10-13 15:37:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:48,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:37:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:48,813 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:48,814 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:48,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:37:48,821 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 97 [2020-10-13 15:37:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:48,822 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:37:48,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:37:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:37:48,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:48,823 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:48,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:37:48,823 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2016824285, now seen corresponding path program 1 times [2020-10-13 15:37:48,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:48,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596222932] [2020-10-13 15:37:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:53,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:53,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596222932] [2020-10-13 15:37:53,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:53,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:53,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52994620] [2020-10-13 15:37:53,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:53,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:53,923 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:37:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:54,560 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-13 15:37:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:54,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:37:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:54,563 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:54,563 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:54,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:37:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:37:54,570 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 97 [2020-10-13 15:37:54,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:54,571 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:37:54,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:37:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:37:54,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:54,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:37:54,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:37:54,573 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:54,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1277273178, now seen corresponding path program 1 times [2020-10-13 15:37:54,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:54,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280145413] [2020-10-13 15:37:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:59,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:37:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:59,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:37:59,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280145413] [2020-10-13 15:37:59,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:59,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:59,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122874206] [2020-10-13 15:37:59,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:59,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:59,669 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:38:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:00,341 INFO L93 Difference]: Finished difference Result 534 states and 791 transitions. [2020-10-13 15:38:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:00,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:00,343 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:00,344 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:38:00,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:38:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:38:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2020-10-13 15:38:00,350 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 98 [2020-10-13 15:38:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:00,351 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2020-10-13 15:38:00,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2020-10-13 15:38:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:38:00,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:00,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:00,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:38:00,352 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:00,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:00,353 INFO L82 PathProgramCache]: Analyzing trace with hash -751312932, now seen corresponding path program 1 times [2020-10-13 15:38:00,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:00,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222367277] [2020-10-13 15:38:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:38:05,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:38:05,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:05,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:05,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222367277] [2020-10-13 15:38:05,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:05,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:05,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488487157] [2020-10-13 15:38:05,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:05,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:05,450 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand 5 states. [2020-10-13 15:38:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:06,077 INFO L93 Difference]: Finished difference Result 509 states and 755 transitions. [2020-10-13 15:38:06,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:06,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:06,080 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:38:06,080 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:38:06,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:06,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:38:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:38:06,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 382 transitions. [2020-10-13 15:38:06,087 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 382 transitions. Word has length 98 [2020-10-13 15:38:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:06,088 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 382 transitions. [2020-10-13 15:38:06,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:06,088 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 382 transitions. [2020-10-13 15:38:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:06,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:06,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:06,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:38:06,089 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:06,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1487890754, now seen corresponding path program 1 times [2020-10-13 15:38:06,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:06,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145085955] [2020-10-13 15:38:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:07,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145085955] [2020-10-13 15:38:07,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:07,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:07,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940019633] [2020-10-13 15:38:07,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:07,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:07,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:07,108 INFO L87 Difference]: Start difference. First operand 261 states and 382 transitions. Second operand 5 states. [2020-10-13 15:38:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:07,776 INFO L93 Difference]: Finished difference Result 534 states and 787 transitions. [2020-10-13 15:38:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:07,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:07,778 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:07,779 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:38:07,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:38:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:38:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2020-10-13 15:38:07,785 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 102 [2020-10-13 15:38:07,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:07,786 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2020-10-13 15:38:07,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2020-10-13 15:38:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:07,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:07,787 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:07,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:38:07,787 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:07,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1420291132, now seen corresponding path program 1 times [2020-10-13 15:38:07,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:07,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711363248] [2020-10-13 15:38:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:38:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:08,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:08,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:08,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711363248] [2020-10-13 15:38:08,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:08,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:08,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886225660] [2020-10-13 15:38:08,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:08,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:08,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:08,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:08,189 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand 5 states. [2020-10-13 15:38:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:08,841 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2020-10-13 15:38:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:08,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:08,845 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:38:08,845 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:38:08,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:38:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 287. [2020-10-13 15:38:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:38:08,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:38:08,852 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 102 [2020-10-13 15:38:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:08,853 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:38:08,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:38:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:38:08,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:08,854 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:08,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:38:08,854 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:08,855 INFO L82 PathProgramCache]: Analyzing trace with hash -2050834932, now seen corresponding path program 1 times [2020-10-13 15:38:08,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:08,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729660297] [2020-10-13 15:38:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:09,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:09,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:09,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:09,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:09,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:09,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:09,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729660297] [2020-10-13 15:38:09,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:09,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:09,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047314760] [2020-10-13 15:38:09,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:09,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:09,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:09,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:09,557 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:38:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:10,435 INFO L93 Difference]: Finished difference Result 663 states and 1000 transitions. [2020-10-13 15:38:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:10,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:38:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:10,439 INFO L225 Difference]: With dead ends: 663 [2020-10-13 15:38:10,439 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 15:38:10,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 15:38:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 315. [2020-10-13 15:38:10,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 477 transitions. [2020-10-13 15:38:10,445 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 477 transitions. Word has length 107 [2020-10-13 15:38:10,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:10,446 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 477 transitions. [2020-10-13 15:38:10,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 477 transitions. [2020-10-13 15:38:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:10,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:10,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:10,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:38:10,447 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:10,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1073573527, now seen corresponding path program 1 times [2020-10-13 15:38:10,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:10,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185965642] [2020-10-13 15:38:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2163 [2020-10-13 15:38:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:38:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:12,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:12,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185965642] [2020-10-13 15:38:12,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:12,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:12,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787696732] [2020-10-13 15:38:12,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:12,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:12,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:12,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:12,740 INFO L87 Difference]: Start difference. First operand 315 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:13,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:13,435 INFO L93 Difference]: Finished difference Result 642 states and 977 transitions. [2020-10-13 15:38:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:13,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:13,438 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:38:13,439 INFO L226 Difference]: Without dead ends: 352 [2020-10-13 15:38:13,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-13 15:38:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2020-10-13 15:38:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 476 transitions. [2020-10-13 15:38:13,445 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 476 transitions. Word has length 108 [2020-10-13 15:38:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:13,446 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 476 transitions. [2020-10-13 15:38:13,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 476 transitions. [2020-10-13 15:38:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:13,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:13,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:13,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:38:13,447 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1429810141, now seen corresponding path program 1 times [2020-10-13 15:38:13,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:13,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447779053] [2020-10-13 15:38:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:14,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:14,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-10-13 15:38:14,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:14,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:14,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:14,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:14,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:38:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:14,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:14,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447779053] [2020-10-13 15:38:14,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:14,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:14,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677316987] [2020-10-13 15:38:14,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:14,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:14,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:14,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:14,148 INFO L87 Difference]: Start difference. First operand 315 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:14,973 INFO L93 Difference]: Finished difference Result 683 states and 1034 transitions. [2020-10-13 15:38:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:14,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:14,976 INFO L225 Difference]: With dead ends: 683 [2020-10-13 15:38:14,976 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:38:14,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:38:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 316. [2020-10-13 15:38:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 477 transitions. [2020-10-13 15:38:14,986 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 477 transitions. Word has length 108 [2020-10-13 15:38:14,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:14,987 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 477 transitions. [2020-10-13 15:38:14,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 477 transitions. [2020-10-13 15:38:14,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:14,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:14,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:14,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:38:14,988 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:14,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:14,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1792123586, now seen corresponding path program 1 times [2020-10-13 15:38:14,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:14,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025188676] [2020-10-13 15:38:14,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:17,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:17,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:17,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025188676] [2020-10-13 15:38:17,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:17,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:17,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471782524] [2020-10-13 15:38:17,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:17,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:17,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:17,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:17,256 INFO L87 Difference]: Start difference. First operand 316 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:17,927 INFO L93 Difference]: Finished difference Result 642 states and 974 transitions. [2020-10-13 15:38:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:17,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:17,931 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:38:17,931 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 15:38:17,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 15:38:17,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 316. [2020-10-13 15:38:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 476 transitions. [2020-10-13 15:38:17,938 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 476 transitions. Word has length 109 [2020-10-13 15:38:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:17,938 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 476 transitions. [2020-10-13 15:38:17,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 476 transitions. [2020-10-13 15:38:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:17,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:17,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:17,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:38:17,940 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:17,941 INFO L82 PathProgramCache]: Analyzing trace with hash -856836182, now seen corresponding path program 1 times [2020-10-13 15:38:17,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:17,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180181521] [2020-10-13 15:38:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:18,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:38:18,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:18,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:18,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:18,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180181521] [2020-10-13 15:38:18,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:18,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:18,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5960499] [2020-10-13 15:38:18,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:18,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:18,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:18,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:18,338 INFO L87 Difference]: Start difference. First operand 316 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:18,990 INFO L93 Difference]: Finished difference Result 639 states and 968 transitions. [2020-10-13 15:38:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:18,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:18,993 INFO L225 Difference]: With dead ends: 639 [2020-10-13 15:38:18,993 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 15:38:18,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 15:38:18,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 316. [2020-10-13 15:38:18,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 475 transitions. [2020-10-13 15:38:18,999 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 475 transitions. Word has length 109 [2020-10-13 15:38:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:19,000 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 475 transitions. [2020-10-13 15:38:19,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 475 transitions. [2020-10-13 15:38:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:38:19,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:19,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:19,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:38:19,002 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:19,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:19,002 INFO L82 PathProgramCache]: Analyzing trace with hash 892244443, now seen corresponding path program 1 times [2020-10-13 15:38:19,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:19,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465346626] [2020-10-13 15:38:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:38:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:20,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:20,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465346626] [2020-10-13 15:38:20,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:20,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:20,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762014934] [2020-10-13 15:38:20,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:20,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:20,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:20,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:20,249 INFO L87 Difference]: Start difference. First operand 316 states and 475 transitions. Second operand 5 states. [2020-10-13 15:38:20,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:20,885 INFO L93 Difference]: Finished difference Result 654 states and 991 transitions. [2020-10-13 15:38:20,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:20,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:38:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:20,888 INFO L225 Difference]: With dead ends: 654 [2020-10-13 15:38:20,889 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:20,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:38:20,895 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 111 [2020-10-13 15:38:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:20,895 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:38:20,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:38:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:20,896 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:20,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:38:20,896 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:20,897 INFO L82 PathProgramCache]: Analyzing trace with hash 756455703, now seen corresponding path program 1 times [2020-10-13 15:38:20,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:20,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457145488] [2020-10-13 15:38:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:21,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:21,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457145488] [2020-10-13 15:38:21,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:21,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:21,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361597615] [2020-10-13 15:38:21,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:21,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:21,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:21,567 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:38:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:22,461 INFO L93 Difference]: Finished difference Result 763 states and 1168 transitions. [2020-10-13 15:38:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:22,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:22,464 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:38:22,464 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:38:22,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:38:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:38:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:38:22,471 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:38:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:22,471 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:38:22,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:38:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:22,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:22,472 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:22,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:38:22,472 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:22,473 INFO L82 PathProgramCache]: Analyzing trace with hash 539390263, now seen corresponding path program 1 times [2020-10-13 15:38:22,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:22,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267819579] [2020-10-13 15:38:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:23,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:23,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:23,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267819579] [2020-10-13 15:38:23,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:23,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:23,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205368785] [2020-10-13 15:38:23,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:23,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:23,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:23,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:23,142 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:38:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:24,045 INFO L93 Difference]: Finished difference Result 819 states and 1268 transitions. [2020-10-13 15:38:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:24,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:24,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:24,049 INFO L225 Difference]: With dead ends: 819 [2020-10-13 15:38:24,049 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 15:38:24,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 15:38:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 365. [2020-10-13 15:38:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:38:24,058 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:38:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:24,058 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:38:24,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:38:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:24,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:24,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:24,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:38:24,060 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash -146029206, now seen corresponding path program 1 times [2020-10-13 15:38:24,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:24,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815262692] [2020-10-13 15:38:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-13 15:38:24,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:38:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:25,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:25,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:25,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815262692] [2020-10-13 15:38:25,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:25,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:25,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923956247] [2020-10-13 15:38:25,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:25,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:25,072 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:38:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:25,752 INFO L93 Difference]: Finished difference Result 737 states and 1138 transitions. [2020-10-13 15:38:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:25,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:25,755 INFO L225 Difference]: With dead ends: 737 [2020-10-13 15:38:25,755 INFO L226 Difference]: Without dead ends: 397 [2020-10-13 15:38:25,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-13 15:38:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 365. [2020-10-13 15:38:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:25,762 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:38:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:25,763 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:25,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:25,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:25,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:25,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:38:25,764 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:25,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1738493390, now seen corresponding path program 1 times [2020-10-13 15:38:25,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:25,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090449105] [2020-10-13 15:38:25,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:26,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:26,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090449105] [2020-10-13 15:38:26,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:26,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:26,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059715352] [2020-10-13 15:38:26,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:26,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:26,438 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:27,297 INFO L93 Difference]: Finished difference Result 811 states and 1252 transitions. [2020-10-13 15:38:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:27,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:27,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:27,300 INFO L225 Difference]: With dead ends: 811 [2020-10-13 15:38:27,300 INFO L226 Difference]: Without dead ends: 471 [2020-10-13 15:38:27,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:27,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-13 15:38:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 365. [2020-10-13 15:38:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:27,307 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:38:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:27,307 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:27,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:27,307 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:27,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:27,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:27,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:27,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:38:27,308 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:27,308 INFO L82 PathProgramCache]: Analyzing trace with hash 122412562, now seen corresponding path program 1 times [2020-10-13 15:38:27,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:27,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888756984] [2020-10-13 15:38:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:27,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888756984] [2020-10-13 15:38:27,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616368842] [2020-10-13 15:38:27,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,994 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:28,847 INFO L93 Difference]: Finished difference Result 783 states and 1202 transitions. [2020-10-13 15:38:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:28,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:28,851 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:38:28,851 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:38:28,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:38:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:38:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:38:28,857 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 113 [2020-10-13 15:38:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:28,857 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:38:28,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:38:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:28,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:28,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:28,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:38:28,858 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1359667634, now seen corresponding path program 1 times [2020-10-13 15:38:28,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:28,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012562423] [2020-10-13 15:38:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:29,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:38:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:29,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:29,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:29,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:29,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:29,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012562423] [2020-10-13 15:38:29,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:29,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:29,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027366735] [2020-10-13 15:38:29,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:29,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:29,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:29,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:29,536 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:38:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:30,420 INFO L93 Difference]: Finished difference Result 763 states and 1166 transitions. [2020-10-13 15:38:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:30,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:30,423 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:38:30,423 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:38:30,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:30,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:38:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:38:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:30,430 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 114 [2020-10-13 15:38:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:30,430 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:30,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:30,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:30,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:38:30,431 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2008010017, now seen corresponding path program 1 times [2020-10-13 15:38:30,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:30,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817328937] [2020-10-13 15:38:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:38:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:31,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:31,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817328937] [2020-10-13 15:38:31,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:31,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:31,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561942678] [2020-10-13 15:38:31,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:31,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:31,349 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:32,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:32,011 INFO L93 Difference]: Finished difference Result 735 states and 1134 transitions. [2020-10-13 15:38:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:32,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:32,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:32,014 INFO L225 Difference]: With dead ends: 735 [2020-10-13 15:38:32,014 INFO L226 Difference]: Without dead ends: 395 [2020-10-13 15:38:32,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-13 15:38:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 365. [2020-10-13 15:38:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 559 transitions. [2020-10-13 15:38:32,022 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 559 transitions. Word has length 114 [2020-10-13 15:38:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:32,022 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 559 transitions. [2020-10-13 15:38:32,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 559 transitions. [2020-10-13 15:38:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:38:32,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:32,023 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:32,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:38:32,023 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash -218792713, now seen corresponding path program 1 times [2020-10-13 15:38:32,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:32,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671899320] [2020-10-13 15:38:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:38:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:32,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:32,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:32,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:32,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:32,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:32,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:32,704 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:32,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671899320] [2020-10-13 15:38:32,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:32,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:32,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573386335] [2020-10-13 15:38:32,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:32,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:32,705 INFO L87 Difference]: Start difference. First operand 365 states and 559 transitions. Second operand 5 states. [2020-10-13 15:38:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:33,559 INFO L93 Difference]: Finished difference Result 783 states and 1200 transitions. [2020-10-13 15:38:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:33,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:38:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:33,562 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:38:33,562 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:38:33,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:38:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:38:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:38:33,568 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 115 [2020-10-13 15:38:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:33,568 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:38:33,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:38:33,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:38:33,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:33,569 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:33,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:38:33,569 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:33,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1593733952, now seen corresponding path program 1 times [2020-10-13 15:38:33,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:33,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680614029] [2020-10-13 15:38:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:38:38,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:38,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:38,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:38,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680614029] [2020-10-13 15:38:38,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:38,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:38,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297718717] [2020-10-13 15:38:38,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:38,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:38,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:38,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:38,652 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:38:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:39,299 INFO L93 Difference]: Finished difference Result 676 states and 1025 transitions. [2020-10-13 15:38:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:39,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:38:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:39,302 INFO L225 Difference]: With dead ends: 676 [2020-10-13 15:38:39,303 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:38:39,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:38:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 337. [2020-10-13 15:38:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 508 transitions. [2020-10-13 15:38:39,308 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 508 transitions. Word has length 116 [2020-10-13 15:38:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:39,309 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 508 transitions. [2020-10-13 15:38:39,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 508 transitions. [2020-10-13 15:38:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:38:39,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:39,310 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:39,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:38:39,310 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:39,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1977892490, now seen corresponding path program 1 times [2020-10-13 15:38:39,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:39,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290326054] [2020-10-13 15:38:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:39,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:39,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:39,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290326054] [2020-10-13 15:38:39,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:39,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:39,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250629719] [2020-10-13 15:38:39,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:39,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:39,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:39,922 INFO L87 Difference]: Start difference. First operand 337 states and 508 transitions. Second operand 5 states. [2020-10-13 15:38:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:40,547 INFO L93 Difference]: Finished difference Result 675 states and 1022 transitions. [2020-10-13 15:38:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:40,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:38:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:40,549 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:38:40,549 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:40,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:40,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 507 transitions. [2020-10-13 15:38:40,556 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 507 transitions. Word has length 116 [2020-10-13 15:38:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:40,556 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 507 transitions. [2020-10-13 15:38:40,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 507 transitions. [2020-10-13 15:38:40,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:38:40,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:40,558 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:40,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:38:40,558 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1758971141, now seen corresponding path program 1 times [2020-10-13 15:38:40,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:40,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488287609] [2020-10-13 15:38:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:38:45,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:45,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 15:38:45,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:45,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:45,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488287609] [2020-10-13 15:38:45,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:45,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:45,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972395062] [2020-10-13 15:38:45,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:45,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:45,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:45,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:45,691 INFO L87 Difference]: Start difference. First operand 337 states and 507 transitions. Second operand 5 states. [2020-10-13 15:38:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:46,332 INFO L93 Difference]: Finished difference Result 675 states and 1020 transitions. [2020-10-13 15:38:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:46,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:38:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:46,335 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:38:46,336 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:46,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:46,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-10-13 15:38:46,341 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 117 [2020-10-13 15:38:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:46,342 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-10-13 15:38:46,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:46,342 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-10-13 15:38:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:46,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:46,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:46,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:38:46,345 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -822875083, now seen corresponding path program 1 times [2020-10-13 15:38:46,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:46,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428608346] [2020-10-13 15:38:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:47,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:47,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-13 15:38:47,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:47,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:38:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:47,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428608346] [2020-10-13 15:38:47,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:47,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:47,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47984228] [2020-10-13 15:38:47,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:47,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:47,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:47,296 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 5 states. [2020-10-13 15:38:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:47,971 INFO L93 Difference]: Finished difference Result 679 states and 1026 transitions. [2020-10-13 15:38:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:47,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:47,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:47,974 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:38:47,974 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:38:47,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:38:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:38:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 505 transitions. [2020-10-13 15:38:47,982 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 505 transitions. Word has length 118 [2020-10-13 15:38:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:47,982 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 505 transitions. [2020-10-13 15:38:47,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 505 transitions. [2020-10-13 15:38:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:47,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:47,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:47,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:38:47,984 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash -645321643, now seen corresponding path program 1 times [2020-10-13 15:38:47,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:47,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820025162] [2020-10-13 15:38:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:48,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:48,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 877 [2020-10-13 15:38:48,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:48,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:38:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:48,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820025162] [2020-10-13 15:38:48,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:48,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:48,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180741904] [2020-10-13 15:38:48,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:48,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:48,984 INFO L87 Difference]: Start difference. First operand 337 states and 505 transitions. Second operand 5 states. [2020-10-13 15:38:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:49,645 INFO L93 Difference]: Finished difference Result 679 states and 1024 transitions. [2020-10-13 15:38:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:49,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:49,648 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:38:49,648 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:38:49,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:38:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:38:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 504 transitions. [2020-10-13 15:38:49,655 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 504 transitions. Word has length 118 [2020-10-13 15:38:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:49,655 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 504 transitions. [2020-10-13 15:38:49,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 504 transitions. [2020-10-13 15:38:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:49,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:49,656 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:49,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:38:49,656 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:49,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1396669820, now seen corresponding path program 1 times [2020-10-13 15:38:49,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:49,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549734725] [2020-10-13 15:38:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:38:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:54,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:54,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:54,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:38:54,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549734725] [2020-10-13 15:38:54,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:54,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:54,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692889377] [2020-10-13 15:38:54,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:54,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:54,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:54,767 INFO L87 Difference]: Start difference. First operand 337 states and 504 transitions. Second operand 5 states. [2020-10-13 15:38:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:55,413 INFO L93 Difference]: Finished difference Result 675 states and 1014 transitions. [2020-10-13 15:38:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:55,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:55,415 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:38:55,415 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:55,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:55,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:55,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2020-10-13 15:38:55,422 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 118 [2020-10-13 15:38:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:55,423 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2020-10-13 15:38:55,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2020-10-13 15:38:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:38:55,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:55,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:55,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:38:55,424 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:55,424 INFO L82 PathProgramCache]: Analyzing trace with hash -209867365, now seen corresponding path program 1 times [2020-10-13 15:38:55,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:55,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470886365] [2020-10-13 15:38:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:55,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:56,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:38:56,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:56,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:56,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470886365] [2020-10-13 15:38:56,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:56,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:56,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629009866] [2020-10-13 15:38:56,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:56,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:56,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:56,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:56,300 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 5 states. [2020-10-13 15:38:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:56,978 INFO L93 Difference]: Finished difference Result 677 states and 1018 transitions. [2020-10-13 15:38:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:56,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:38:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:56,980 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:38:56,980 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:38:56,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:38:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:38:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 502 transitions. [2020-10-13 15:38:56,987 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 502 transitions. Word has length 119 [2020-10-13 15:38:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:56,988 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 502 transitions. [2020-10-13 15:38:56,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 502 transitions. [2020-10-13 15:38:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:38:56,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:56,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:56,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:38:56,989 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:56,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1982980635, now seen corresponding path program 1 times [2020-10-13 15:38:56,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:56,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413543422] [2020-10-13 15:38:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:57,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:38:57,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:57,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:57,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:57,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:38:58,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413543422] [2020-10-13 15:38:58,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:58,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:58,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554782891] [2020-10-13 15:38:58,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:58,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:58,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:58,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:58,005 INFO L87 Difference]: Start difference. First operand 337 states and 502 transitions. Second operand 5 states. [2020-10-13 15:38:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:58,693 INFO L93 Difference]: Finished difference Result 673 states and 1011 transitions. [2020-10-13 15:38:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:58,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:38:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:58,697 INFO L225 Difference]: With dead ends: 673 [2020-10-13 15:38:58,697 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:38:58,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:38:58,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:38:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 337. [2020-10-13 15:38:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 501 transitions. [2020-10-13 15:38:58,703 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 501 transitions. Word has length 119 [2020-10-13 15:38:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:58,703 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 501 transitions. [2020-10-13 15:38:58,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 501 transitions. [2020-10-13 15:38:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:38:58,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:58,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:38:58,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:38:58,704 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1719326400, now seen corresponding path program 1 times [2020-10-13 15:38:58,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:58,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186016637] [2020-10-13 15:38:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:03,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:03,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186016637] [2020-10-13 15:39:03,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:03,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:03,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015281536] [2020-10-13 15:39:03,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:03,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:03,787 INFO L87 Difference]: Start difference. First operand 337 states and 501 transitions. Second operand 5 states. [2020-10-13 15:39:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:04,426 INFO L93 Difference]: Finished difference Result 675 states and 1008 transitions. [2020-10-13 15:39:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:04,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:04,430 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:04,430 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:04,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 500 transitions. [2020-10-13 15:39:04,435 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 500 transitions. Word has length 119 [2020-10-13 15:39:04,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:04,436 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 500 transitions. [2020-10-13 15:39:04,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 500 transitions. [2020-10-13 15:39:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:04,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:04,437 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:04,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 15:39:04,437 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:04,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:04,437 INFO L82 PathProgramCache]: Analyzing trace with hash -201845616, now seen corresponding path program 1 times [2020-10-13 15:39:04,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:04,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335083933] [2020-10-13 15:39:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:39:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:04,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:04,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335083933] [2020-10-13 15:39:04,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:04,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:04,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190500839] [2020-10-13 15:39:04,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:04,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:04,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:04,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:04,815 INFO L87 Difference]: Start difference. First operand 337 states and 500 transitions. Second operand 5 states. [2020-10-13 15:39:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:05,511 INFO L93 Difference]: Finished difference Result 673 states and 1007 transitions. [2020-10-13 15:39:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:05,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:05,514 INFO L225 Difference]: With dead ends: 673 [2020-10-13 15:39:05,514 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:39:05,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:39:05,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 337. [2020-10-13 15:39:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:05,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 499 transitions. [2020-10-13 15:39:05,520 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 499 transitions. Word has length 120 [2020-10-13 15:39:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:05,520 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 499 transitions. [2020-10-13 15:39:05,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 499 transitions. [2020-10-13 15:39:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:39:05,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:05,521 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:05,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 15:39:05,521 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash -118813089, now seen corresponding path program 1 times [2020-10-13 15:39:05,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:05,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966146416] [2020-10-13 15:39:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:10,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:10,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:10,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966146416] [2020-10-13 15:39:10,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:10,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:10,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114818194] [2020-10-13 15:39:10,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:10,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:10,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:10,603 INFO L87 Difference]: Start difference. First operand 337 states and 499 transitions. Second operand 5 states. [2020-10-13 15:39:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:11,243 INFO L93 Difference]: Finished difference Result 665 states and 992 transitions. [2020-10-13 15:39:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:11,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:39:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:11,245 INFO L225 Difference]: With dead ends: 665 [2020-10-13 15:39:11,246 INFO L226 Difference]: Without dead ends: 353 [2020-10-13 15:39:11,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-13 15:39:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 337. [2020-10-13 15:39:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 498 transitions. [2020-10-13 15:39:11,252 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 498 transitions. Word has length 120 [2020-10-13 15:39:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:11,253 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 498 transitions. [2020-10-13 15:39:11,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 498 transitions. [2020-10-13 15:39:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:11,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:11,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:11,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 15:39:11,254 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:11,254 INFO L82 PathProgramCache]: Analyzing trace with hash -712513610, now seen corresponding path program 1 times [2020-10-13 15:39:11,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:11,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101535206] [2020-10-13 15:39:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 15:39:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:39:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:11,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:11,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:11,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:11,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:11,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:11,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:11,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:39:11,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101535206] [2020-10-13 15:39:11,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:11,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:11,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752919214] [2020-10-13 15:39:11,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:11,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:11,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:11,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:11,633 INFO L87 Difference]: Start difference. First operand 337 states and 498 transitions. Second operand 5 states. [2020-10-13 15:39:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:12,325 INFO L93 Difference]: Finished difference Result 671 states and 1001 transitions. [2020-10-13 15:39:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:12,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:12,328 INFO L225 Difference]: With dead ends: 671 [2020-10-13 15:39:12,329 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 15:39:12,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:12,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 15:39:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 337. [2020-10-13 15:39:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 497 transitions. [2020-10-13 15:39:12,335 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 497 transitions. Word has length 121 [2020-10-13 15:39:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:12,335 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 497 transitions. [2020-10-13 15:39:12,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 497 transitions. [2020-10-13 15:39:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:12,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:12,336 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:12,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 15:39:12,336 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1900106345, now seen corresponding path program 1 times [2020-10-13 15:39:12,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:12,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641331588] [2020-10-13 15:39:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-13 15:39:12,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:39:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:39:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:12,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641331588] [2020-10-13 15:39:12,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271347541] [2020-10-13 15:39:12,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:12,679 INFO L87 Difference]: Start difference. First operand 337 states and 497 transitions. Second operand 5 states. [2020-10-13 15:39:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:13,583 INFO L93 Difference]: Finished difference Result 763 states and 1140 transitions. [2020-10-13 15:39:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:13,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:13,587 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:39:13,587 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:39:13,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:39:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:39:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:39:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 547 transitions. [2020-10-13 15:39:13,594 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 547 transitions. Word has length 121 [2020-10-13 15:39:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:13,594 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 547 transitions. [2020-10-13 15:39:13,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 547 transitions. [2020-10-13 15:39:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:39:13,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:13,596 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:13,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-13 15:39:13,596 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2076554200, now seen corresponding path program 1 times [2020-10-13 15:39:13,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:13,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427376809] [2020-10-13 15:39:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:13,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:39:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:14,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:14,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:14,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427376809] [2020-10-13 15:39:14,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:14,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:14,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783387844] [2020-10-13 15:39:14,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:14,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:14,581 INFO L87 Difference]: Start difference. First operand 365 states and 547 transitions. Second operand 5 states. [2020-10-13 15:39:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:15,208 INFO L93 Difference]: Finished difference Result 721 states and 1088 transitions. [2020-10-13 15:39:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:15,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:39:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:15,211 INFO L225 Difference]: With dead ends: 721 [2020-10-13 15:39:15,211 INFO L226 Difference]: Without dead ends: 381 [2020-10-13 15:39:15,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-13 15:39:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 365. [2020-10-13 15:39:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:39:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 546 transitions. [2020-10-13 15:39:15,217 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 546 transitions. Word has length 121 [2020-10-13 15:39:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:15,218 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 546 transitions. [2020-10-13 15:39:15,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 546 transitions. [2020-10-13 15:39:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:39:15,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:15,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:39:15,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-13 15:39:15,219 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:15,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:15,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1807429042, now seen corresponding path program 1 times [2020-10-13 15:39:15,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:15,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407383188] [2020-10-13 15:39:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:15,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:39:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:39:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:15,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:15,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:15,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:39:15,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407383188] [2020-10-13 15:39:15,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:15,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:15,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262451395] [2020-10-13 15:39:15,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:15,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:15,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:15,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:15,558 INFO L87 Difference]: Start difference. First operand 365 states and 546 transitions. Second operand 5 states.