/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-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:35:23,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:35:23,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:35:23,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:35:23,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:35:23,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:35:23,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:35:23,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:35:23,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:35:23,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:35:23,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:35:23,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:35:23,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:35:23,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:35:23,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:35:23,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:35:23,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:35:23,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:35:23,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:35:23,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:35:23,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:35:23,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:35:23,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:35:23,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:35:23,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:35:23,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:35:23,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:35:23,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:35:23,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:35:23,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:35:23,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:35:23,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:35:23,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:35:23,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:35:23,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:35:23,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:35:23,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:35:23,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:35:23,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:35:23,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:35:23,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:35:23,610 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 15:35:23,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:35:23,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:35:23,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:35:23,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:35:23,655 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:35:23,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:35:23,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:35:23,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:35:23,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:35:23,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:35:23,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:35:23,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:35:23,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:35:23,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:35:23,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:35:23,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:35:23,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:35:23,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:35:23,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:35:23,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:35:23,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:35:23,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:35:23,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:35:23,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:35:23,660 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 15:35:23,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:35:23,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:35:23,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:35:23,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:35:23,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:35:23,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-2.c [2020-10-13 15:35:24,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046300c48/e65a6f162aec4538bbe3e1b36d2f3c60/FLAGb69318615 [2020-10-13 15:35:24,742 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:35:24,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.09.i.cil-2.c [2020-10-13 15:35:24,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046300c48/e65a6f162aec4538bbe3e1b36d2f3c60/FLAGb69318615 [2020-10-13 15:35:24,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046300c48/e65a6f162aec4538bbe3e1b36d2f3c60 [2020-10-13 15:35:24,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:35:24,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:35:24,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:24,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:35:24,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:35:24,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:24" (1/1) ... [2020-10-13 15:35:24,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f33a46 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 15:35:24,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:35:24" (1/1) ... [2020-10-13 15:35:24,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:35:25,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:35:25,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:25,744 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:35:25,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:35:25,947 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:35:25,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:35:25 WrapperNode [2020-10-13 15:35:25,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:35:25,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:35:25,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:35:25,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:35:25,965 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 15:35:25,965 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 15:35:25,991 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 15:35:25,992 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 15:35:26,053 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 15:35:26,064 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 15:35:26,069 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 15:35:26,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:35:26,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:35:26,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:35:26,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:35:26,079 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 15:35:26,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:35:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:35:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:35:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:35:26,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:35:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:35:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:35:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:35:26,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:35:26,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:35:26,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:35:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:35:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:35:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:35:26,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:35:26,579 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:35:27,441 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:35:27,442 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:35:27,466 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:35:27,466 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:35:27,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:27 BoogieIcfgContainer [2020-10-13 15:35:27,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:35:27,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:35:27,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:35:27,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:35:27,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:35:24" (1/3) ... [2020-10-13 15:35:27,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b4291d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:27, skipping insertion in model container [2020-10-13 15:35:27,478 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 15:35:27,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b4291d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:35:27, skipping insertion in model container [2020-10-13 15:35:27,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:35:27" (3/3) ... [2020-10-13 15:35:27,480 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.09.i.cil-2.c [2020-10-13 15:35:27,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:35:27,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:35:27,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:35:27,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:35:27,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:35:27,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:35:27,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:35:27,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:35:27,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:35:27,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:35:27,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:35:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-13 15:35:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 15:35:27,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:27,580 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 15:35:27,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash 237777211, now seen corresponding path program 1 times [2020-10-13 15:35:27,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:27,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103135665] [2020-10-13 15:35:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:35:29,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:29,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-13 15:35:29,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:29,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:29,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:35:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:29,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:35:29,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,490 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 15:35:29,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103135665] [2020-10-13 15:35:29,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:29,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:29,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20241477] [2020-10-13 15:35:29,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:29,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:29,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:29,518 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 5 states. [2020-10-13 15:35:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:30,415 INFO L93 Difference]: Finished difference Result 333 states and 558 transitions. [2020-10-13 15:35:30,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:30,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-13 15:35:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:30,438 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:35:30,438 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:35:30,444 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 15:35:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:35:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:35:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 232 transitions. [2020-10-13 15:35:30,497 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 232 transitions. Word has length 41 [2020-10-13 15:35:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:30,497 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 232 transitions. [2020-10-13 15:35:30,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 232 transitions. [2020-10-13 15:35:30,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 15:35:30,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:30,500 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 15:35:30,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:35:30,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -495950029, now seen corresponding path program 1 times [2020-10-13 15:35:30,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:30,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390033824] [2020-10-13 15:35:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:31,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 15:35:31,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-13 15:35:31,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:31,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:31,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:31,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:31,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:31,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:31,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:31,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:31,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:31,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:31,404 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 15:35:31,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390033824] [2020-10-13 15:35:31,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:31,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:31,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741717531] [2020-10-13 15:35:31,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:31,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:31,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:31,408 INFO L87 Difference]: Start difference. First operand 152 states and 232 transitions. Second operand 5 states. [2020-10-13 15:35:32,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:32,162 INFO L93 Difference]: Finished difference Result 296 states and 449 transitions. [2020-10-13 15:35:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:32,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-10-13 15:35:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:32,166 INFO L225 Difference]: With dead ends: 296 [2020-10-13 15:35:32,166 INFO L226 Difference]: Without dead ends: 169 [2020-10-13 15:35:32,168 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 15:35:32,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-13 15:35:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-13 15:35:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2020-10-13 15:35:32,183 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 54 [2020-10-13 15:35:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:32,184 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2020-10-13 15:35:32,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2020-10-13 15:35:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:32,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:32,187 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 15:35:32,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:35:32,188 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:32,188 INFO L82 PathProgramCache]: Analyzing trace with hash -556125065, now seen corresponding path program 1 times [2020-10-13 15:35:32,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:32,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625392320] [2020-10-13 15:35:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:32,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:37,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:35:37,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:37,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:37,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:37,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,311 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 15:35:37,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625392320] [2020-10-13 15:35:37,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:37,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:37,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160286372] [2020-10-13 15:35:37,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:37,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:37,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:37,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:37,314 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand 5 states. [2020-10-13 15:35:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:37,967 INFO L93 Difference]: Finished difference Result 295 states and 447 transitions. [2020-10-13 15:35:37,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:37,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:37,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:37,970 INFO L225 Difference]: With dead ends: 295 [2020-10-13 15:35:37,972 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 15:35:37,973 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 15:35:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 15:35:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2020-10-13 15:35:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-13 15:35:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 230 transitions. [2020-10-13 15:35:37,997 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 230 transitions. Word has length 55 [2020-10-13 15:35:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:37,997 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 230 transitions. [2020-10-13 15:35:37,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 230 transitions. [2020-10-13 15:35:38,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:38,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:38,007 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 15:35:38,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:35:38,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:38,008 INFO L82 PathProgramCache]: Analyzing trace with hash 309454091, now seen corresponding path program 1 times [2020-10-13 15:35:38,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:38,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342424542] [2020-10-13 15:35:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:38,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:41,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:35:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:35:43,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:35:43,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:43,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:43,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:43,180 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 15:35:43,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342424542] [2020-10-13 15:35:43,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:43,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:43,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271424963] [2020-10-13 15:35:43,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:43,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:43,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:43,184 INFO L87 Difference]: Start difference. First operand 152 states and 230 transitions. Second operand 6 states. [2020-10-13 15:35:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:43,872 INFO L93 Difference]: Finished difference Result 289 states and 439 transitions. [2020-10-13 15:35:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:35:43,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 15:35:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:43,875 INFO L225 Difference]: With dead ends: 289 [2020-10-13 15:35:43,875 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:35:43,876 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 15:35:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:35:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 15:35:43,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 241 transitions. [2020-10-13 15:35:43,886 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 241 transitions. Word has length 55 [2020-10-13 15:35:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:43,887 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 241 transitions. [2020-10-13 15:35:43,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:43,887 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 241 transitions. [2020-10-13 15:35:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:43,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:43,889 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 15:35:43,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:35:43,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:43,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1471564928, now seen corresponding path program 1 times [2020-10-13 15:35:43,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:43,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904109133] [2020-10-13 15:35:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:44,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:44,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-13 15:35:44,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:44,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:35:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 15:35:44,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:44,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:44,581 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 15:35:44,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904109133] [2020-10-13 15:35:44,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:44,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:44,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136502235] [2020-10-13 15:35:44,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:44,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:44,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:44,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:44,584 INFO L87 Difference]: Start difference. First operand 161 states and 241 transitions. Second operand 5 states. [2020-10-13 15:35:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:45,262 INFO L93 Difference]: Finished difference Result 320 states and 477 transitions. [2020-10-13 15:35:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:45,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:45,266 INFO L225 Difference]: With dead ends: 320 [2020-10-13 15:35:45,266 INFO L226 Difference]: Without dead ends: 184 [2020-10-13 15:35:45,267 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 15:35:45,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-13 15:35:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 161. [2020-10-13 15:35:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 240 transitions. [2020-10-13 15:35:45,275 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 240 transitions. Word has length 55 [2020-10-13 15:35:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:45,275 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 240 transitions. [2020-10-13 15:35:45,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 240 transitions. [2020-10-13 15:35:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 15:35:45,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:45,277 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 15:35:45,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:35:45,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:45,278 INFO L82 PathProgramCache]: Analyzing trace with hash -171966527, now seen corresponding path program 1 times [2020-10-13 15:35:45,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:45,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457304825] [2020-10-13 15:35:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 15:35:45,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-13 15:35:45,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:35:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:35:45,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:45,958 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 15:35:45,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457304825] [2020-10-13 15:35:45,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:45,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:45,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006603826] [2020-10-13 15:35:45,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:45,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:45,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:45,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:45,961 INFO L87 Difference]: Start difference. First operand 161 states and 240 transitions. Second operand 5 states. [2020-10-13 15:35:46,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:46,690 INFO L93 Difference]: Finished difference Result 319 states and 475 transitions. [2020-10-13 15:35:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:46,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-13 15:35:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:46,694 INFO L225 Difference]: With dead ends: 319 [2020-10-13 15:35:46,694 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:35:46,695 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 15:35:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:35:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 161. [2020-10-13 15:35:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 239 transitions. [2020-10-13 15:35:46,703 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 239 transitions. Word has length 55 [2020-10-13 15:35:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:46,703 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 239 transitions. [2020-10-13 15:35:46,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:46,704 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 239 transitions. [2020-10-13 15:35:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:35:46,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:46,704 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 15:35:46,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:35:46,705 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash -462148946, now seen corresponding path program 1 times [2020-10-13 15:35:46,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:46,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758257202] [2020-10-13 15:35:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:35:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:35:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:35:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:51,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:51,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:51,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:51,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:35:51,805 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 15:35:51,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758257202] [2020-10-13 15:35:51,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:51,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:51,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757791772] [2020-10-13 15:35:51,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:51,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:51,809 INFO L87 Difference]: Start difference. First operand 161 states and 239 transitions. Second operand 5 states. [2020-10-13 15:35:52,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:52,423 INFO L93 Difference]: Finished difference Result 310 states and 463 transitions. [2020-10-13 15:35:52,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:52,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-10-13 15:35:52,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:52,426 INFO L225 Difference]: With dead ends: 310 [2020-10-13 15:35:52,426 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 15:35:52,427 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 15:35:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 15:35:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 161. [2020-10-13 15:35:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:35:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 238 transitions. [2020-10-13 15:35:52,436 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 238 transitions. Word has length 56 [2020-10-13 15:35:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:52,436 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 238 transitions. [2020-10-13 15:35:52,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 238 transitions. [2020-10-13 15:35:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 15:35:52,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:52,438 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 15:35:52,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:35:52,439 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1249075170, now seen corresponding path program 1 times [2020-10-13 15:35:52,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:52,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603817046] [2020-10-13 15:35:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:35:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:35:57,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:57,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:57,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:57,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:57,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:57,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:57,553 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 15:35:57,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603817046] [2020-10-13 15:35:57,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:57,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:35:57,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707883152] [2020-10-13 15:35:57,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:35:57,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:57,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:35:57,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:57,556 INFO L87 Difference]: Start difference. First operand 161 states and 238 transitions. Second operand 6 states. [2020-10-13 15:35:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:59,251 INFO L93 Difference]: Finished difference Result 426 states and 643 transitions. [2020-10-13 15:35:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:35:59,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 15:35:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:59,254 INFO L225 Difference]: With dead ends: 426 [2020-10-13 15:35:59,254 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:35:59,255 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 15:35:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:35:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 178. [2020-10-13 15:35:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:35:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 265 transitions. [2020-10-13 15:35:59,266 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 265 transitions. Word has length 56 [2020-10-13 15:35:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:59,268 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 265 transitions. [2020-10-13 15:35:59,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:35:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 265 transitions. [2020-10-13 15:35:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:35:59,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:59,270 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 15:35:59,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:35:59,271 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:59,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1531915781, now seen corresponding path program 1 times [2020-10-13 15:35:59,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:59,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196888109] [2020-10-13 15:35:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4480 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:03,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:03,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:03,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:03,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:03,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:03,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:03,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:03,845 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 15:36:03,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196888109] [2020-10-13 15:36:03,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:03,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:03,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582213043] [2020-10-13 15:36:03,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:03,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:03,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:03,848 INFO L87 Difference]: Start difference. First operand 178 states and 265 transitions. Second operand 5 states. [2020-10-13 15:36:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:04,600 INFO L93 Difference]: Finished difference Result 344 states and 516 transitions. [2020-10-13 15:36:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:04,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-13 15:36:04,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:04,603 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:04,603 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:04,604 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 15:36:04,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:04,612 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:04,613 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:04,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:04,613 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 15:36:04,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:04,614 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 15:36:04,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:36:04,614 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:04,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:04,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1657674672, now seen corresponding path program 1 times [2020-10-13 15:36:04,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:04,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2983011] [2020-10-13 15:36:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:05,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:09,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:36:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:09,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:09,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:09,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:09,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:09,714 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 15:36:09,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2983011] [2020-10-13 15:36:09,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:09,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:09,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044790270] [2020-10-13 15:36:09,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:09,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:09,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:09,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:09,716 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 6 states. [2020-10-13 15:36:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:10,473 INFO L93 Difference]: Finished difference Result 350 states and 522 transitions. [2020-10-13 15:36:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:36:10,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 15:36:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:10,476 INFO L225 Difference]: With dead ends: 350 [2020-10-13 15:36:10,476 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:36:10,476 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 15:36:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:36:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-10-13 15:36:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 264 transitions. [2020-10-13 15:36:10,485 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 264 transitions. Word has length 57 [2020-10-13 15:36:10,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:10,485 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 264 transitions. [2020-10-13 15:36:10,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 264 transitions. [2020-10-13 15:36:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:10,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:10,493 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 15:36:10,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:36:10,493 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:10,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1616983895, now seen corresponding path program 1 times [2020-10-13 15:36:10,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:10,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53539300] [2020-10-13 15:36:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:10,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:12,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3251 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:13,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:13,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:13,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:13,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:13,827 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 15:36:13,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53539300] [2020-10-13 15:36:13,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:13,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:13,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977644871] [2020-10-13 15:36:13,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:13,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:13,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:13,830 INFO L87 Difference]: Start difference. First operand 178 states and 264 transitions. Second operand 5 states. [2020-10-13 15:36:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:14,509 INFO L93 Difference]: Finished difference Result 344 states and 515 transitions. [2020-10-13 15:36:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:14,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:14,513 INFO L225 Difference]: With dead ends: 344 [2020-10-13 15:36:14,513 INFO L226 Difference]: Without dead ends: 191 [2020-10-13 15:36:14,515 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 15:36:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-13 15:36:14,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2020-10-13 15:36:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 15:36:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2020-10-13 15:36:14,523 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 58 [2020-10-13 15:36:14,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:14,523 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2020-10-13 15:36:14,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2020-10-13 15:36:14,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:14,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:14,525 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 15:36:14,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:36:14,525 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1380545738, now seen corresponding path program 1 times [2020-10-13 15:36:14,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:14,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648825044] [2020-10-13 15:36:14,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:36:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:15,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:15,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:15,039 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 15:36:15,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648825044] [2020-10-13 15:36:15,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:15,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:15,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167978851] [2020-10-13 15:36:15,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:15,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:15,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:15,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:15,042 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand 5 states. [2020-10-13 15:36:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:15,697 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:36:15,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:15,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 15:36:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:15,700 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:36:15,701 INFO L226 Difference]: Without dead ends: 230 [2020-10-13 15:36:15,702 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 15:36:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-13 15:36:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-13 15:36:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 15:36:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2020-10-13 15:36:15,709 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 58 [2020-10-13 15:36:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:15,709 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2020-10-13 15:36:15,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2020-10-13 15:36:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 15:36:15,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:15,711 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 15:36:15,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:36:15,711 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1254155939, now seen corresponding path program 1 times [2020-10-13 15:36:15,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:15,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614957642] [2020-10-13 15:36:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:16,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:36:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:36:20,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:20,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:20,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:20,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:20,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:20,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:20,810 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 15:36:20,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614957642] [2020-10-13 15:36:20,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:20,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:36:20,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051167585] [2020-10-13 15:36:20,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:36:20,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:20,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:36:20,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:36:20,812 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2020-10-13 15:36:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:22,043 INFO L93 Difference]: Finished difference Result 487 states and 744 transitions. [2020-10-13 15:36:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:36:22,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 15:36:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:22,047 INFO L225 Difference]: With dead ends: 487 [2020-10-13 15:36:22,047 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:36:22,048 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 15:36:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:36:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 196. [2020-10-13 15:36:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:36:22,056 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 58 [2020-10-13 15:36:22,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:22,057 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:36:22,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:36:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:36:22,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 15:36:22,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:22,058 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 15:36:22,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:36:22,058 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:22,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1241162730, now seen corresponding path program 1 times [2020-10-13 15:36:22,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:22,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40146139] [2020-10-13 15:36:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:25,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3294 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:25,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:25,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:25,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:25,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:25,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:25,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:25,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:25,426 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 15:36:25,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40146139] [2020-10-13 15:36:25,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:25,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:25,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694057478] [2020-10-13 15:36:25,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:25,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:25,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:25,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:25,428 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:36:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:25,977 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:36:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:25,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-13 15:36:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:25,980 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:36:25,981 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:36:25,982 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 15:36:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:36:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:36:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:36:25,989 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 59 [2020-10-13 15:36:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:25,989 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:36:25,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:36:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:36:25,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:25,990 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 15:36:25,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:36:25,991 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash 740008964, now seen corresponding path program 1 times [2020-10-13 15:36:25,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:25,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343464237] [2020-10-13 15:36:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:26,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:26,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:36:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:26,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 15:36:26,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:36:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:26,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:26,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:26,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:26,501 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 15:36:26,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343464237] [2020-10-13 15:36:26,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:26,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:26,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640728304] [2020-10-13 15:36:26,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:26,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:26,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:26,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:26,504 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:36:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:27,125 INFO L93 Difference]: Finished difference Result 397 states and 594 transitions. [2020-10-13 15:36:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:27,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:36:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:27,127 INFO L225 Difference]: With dead ends: 397 [2020-10-13 15:36:27,127 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 15:36:27,128 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 15:36:27,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 15:36:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2020-10-13 15:36:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:36:27,135 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 71 [2020-10-13 15:36:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:27,135 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:36:27,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:36:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:27,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:27,137 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 15:36:27,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:36:27,138 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash -896101946, now seen corresponding path program 1 times [2020-10-13 15:36:27,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:27,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379531464] [2020-10-13 15:36:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:32,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:32,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:36:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:32,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:32,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:32,220 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 15:36:32,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379531464] [2020-10-13 15:36:32,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:32,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:32,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927708466] [2020-10-13 15:36:32,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:32,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:32,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:32,222 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:36:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:32,815 INFO L93 Difference]: Finished difference Result 387 states and 579 transitions. [2020-10-13 15:36:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:32,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:32,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:32,818 INFO L225 Difference]: With dead ends: 387 [2020-10-13 15:36:32,818 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:36:32,819 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 15:36:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:36:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 196. [2020-10-13 15:36:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:36:32,827 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 72 [2020-10-13 15:36:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:32,828 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:36:32,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:36:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:32,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:32,829 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 15:36:32,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:36:32,830 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:32,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1131588047, now seen corresponding path program 1 times [2020-10-13 15:36:32,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:32,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893974113] [2020-10-13 15:36:32,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:33,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:36:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:33,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:33,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:33,342 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 15:36:33,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893974113] [2020-10-13 15:36:33,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:33,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:33,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109146513] [2020-10-13 15:36:33,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:33,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:33,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:33,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:33,344 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:36:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:33,957 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:36:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:33,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:33,960 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:36:33,960 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:36:33,961 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 15:36:33,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:36:33,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:36:33,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:36:33,967 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 72 [2020-10-13 15:36:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:33,968 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:36:33,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:36:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:36:33,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:33,969 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 15:36:33,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:36:33,970 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:33,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:33,970 INFO L82 PathProgramCache]: Analyzing trace with hash -511943408, now seen corresponding path program 1 times [2020-10-13 15:36:33,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:33,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893841382] [2020-10-13 15:36:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:34,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 15:36:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-13 15:36:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:34,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:36:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:34,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:34,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:34,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:36:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:36:34,465 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 15:36:34,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893841382] [2020-10-13 15:36:34,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:34,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:34,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280783390] [2020-10-13 15:36:34,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:34,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:34,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:34,467 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:36:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:35,054 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:36:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:35,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-13 15:36:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:35,057 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:35,057 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:35,058 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 15:36:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:36:35,065 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 72 [2020-10-13 15:36:35,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:35,065 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:36:35,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:35,066 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:36:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 15:36:35,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:35,067 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 15:36:35,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:36:35,067 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:35,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1883469631, now seen corresponding path program 1 times [2020-10-13 15:36:35,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:35,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564971592] [2020-10-13 15:36:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:40,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 15:36:40,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:36:40,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:40,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:36:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:40,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:40,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:40,135 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 15:36:40,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564971592] [2020-10-13 15:36:40,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:40,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:40,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124416786] [2020-10-13 15:36:40,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:40,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:40,137 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:36:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:40,694 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:36:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:40,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-13 15:36:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:40,697 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:40,697 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:40,699 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 15:36:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:36:40,705 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 73 [2020-10-13 15:36:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:40,706 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:36:40,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:36:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 15:36:40,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:40,707 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 15:36:40,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:36:40,707 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:40,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1832183926, now seen corresponding path program 1 times [2020-10-13 15:36:40,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:40,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160773486] [2020-10-13 15:36:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:41,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:36:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:36:45,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:36:45,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:45,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:45,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:45,790 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 15:36:45,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160773486] [2020-10-13 15:36:45,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:45,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:45,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640810285] [2020-10-13 15:36:45,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:45,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:45,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:45,793 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:36:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:46,361 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:36:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:46,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-13 15:36:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:46,364 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:46,365 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:46,366 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 15:36:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:36:46,373 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 74 [2020-10-13 15:36:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:46,374 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:36:46,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:36:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:36:46,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:46,375 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 15:36:46,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:36:46,376 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1959605498, now seen corresponding path program 1 times [2020-10-13 15:36:46,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:46,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874587137] [2020-10-13 15:36:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:47,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:51,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 15:36:51,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:36:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:51,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:51,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:51,453 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 15:36:51,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874587137] [2020-10-13 15:36:51,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:51,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:51,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226798480] [2020-10-13 15:36:51,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:51,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:51,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:51,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:51,455 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:36:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:51,996 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:36:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:51,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-13 15:36:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:51,999 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:36:51,999 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:36:52,000 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 15:36:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:36:52,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:36:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:36:52,007 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 75 [2020-10-13 15:36:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:52,007 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:36:52,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:36:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 15:36:52,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:52,008 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 15:36:52,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:36:52,009 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2036041243, now seen corresponding path program 1 times [2020-10-13 15:36:52,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:52,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986737501] [2020-10-13 15:36:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:36:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:36:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:36:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:36:57,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,088 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 15:36:57,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986737501] [2020-10-13 15:36:57,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:57,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:57,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950278804] [2020-10-13 15:36:57,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:57,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:57,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:57,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:57,090 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:36:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:57,631 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:36:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:57,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-13 15:36:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:57,636 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:36:57,636 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:36:57,637 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 15:36:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:36:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:36:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:36:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:36:57,643 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 76 [2020-10-13 15:36:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:36:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:36:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:36:57,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:57,644 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 15:36:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:36:57,644 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1465335169, now seen corresponding path program 1 times [2020-10-13 15:36:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953509072] [2020-10-13 15:36:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:36:57,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:57,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:57,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:57,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:57,922 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 15:36:57,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953509072] [2020-10-13 15:36:57,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:57,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:57,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979173347] [2020-10-13 15:36:57,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:57,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:57,924 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 5 states. [2020-10-13 15:36:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:36:58,723 INFO L93 Difference]: Finished difference Result 482 states and 715 transitions. [2020-10-13 15:36:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:36:58,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:36:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:36:58,728 INFO L225 Difference]: With dead ends: 482 [2020-10-13 15:36:58,728 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:36:58,730 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 15:36:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:36:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 225. [2020-10-13 15:36:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 15:36:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-13 15:36:58,750 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 80 [2020-10-13 15:36:58,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:36:58,750 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-13 15:36:58,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:36:58,750 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-13 15:36:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:36:58,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:36:58,755 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 15:36:58,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:36:58,755 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:36:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:36:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1537721727, now seen corresponding path program 1 times [2020-10-13 15:36:58,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:36:58,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089006950] [2020-10-13 15:36:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:36:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:36:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:36:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:36:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:36:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:36:59,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:36:59,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:36:59,460 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 15:36:59,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089006950] [2020-10-13 15:36:59,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:36:59,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:36:59,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21840916] [2020-10-13 15:36:59,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:36:59,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:36:59,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:36:59,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:36:59,461 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 5 states. [2020-10-13 15:37:00,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:00,173 INFO L93 Difference]: Finished difference Result 484 states and 730 transitions. [2020-10-13 15:37:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:00,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:37:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:00,176 INFO L225 Difference]: With dead ends: 484 [2020-10-13 15:37:00,177 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:37:00,177 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 15:37:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:37:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-10-13 15:37:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 15:37:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 377 transitions. [2020-10-13 15:37:00,188 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 377 transitions. Word has length 80 [2020-10-13 15:37:00,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:00,189 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 377 transitions. [2020-10-13 15:37:00,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 377 transitions. [2020-10-13 15:37:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:37:00,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:00,190 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 15:37:00,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:37:00,191 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:00,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1894533686, now seen corresponding path program 1 times [2020-10-13 15:37:00,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:00,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015152217] [2020-10-13 15:37:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:00,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:37:00,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-13 15:37:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:00,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:37:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:00,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:00,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:00,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:00,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:00,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:00,629 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 15:37:00,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015152217] [2020-10-13 15:37:00,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:00,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:00,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38282632] [2020-10-13 15:37:00,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:00,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:00,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:00,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:00,631 INFO L87 Difference]: Start difference. First operand 249 states and 377 transitions. Second operand 5 states. [2020-10-13 15:37:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:01,395 INFO L93 Difference]: Finished difference Result 551 states and 836 transitions. [2020-10-13 15:37:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:01,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:37:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:01,398 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:37:01,398 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:37:01,399 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 15:37:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:37:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 250. [2020-10-13 15:37:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 15:37:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-13 15:37:01,407 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 81 [2020-10-13 15:37:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:01,407 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-13 15:37:01,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-13 15:37:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:37:01,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:01,409 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 15:37:01,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:37:01,409 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:01,409 INFO L82 PathProgramCache]: Analyzing trace with hash 839608221, now seen corresponding path program 1 times [2020-10-13 15:37:01,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:01,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575417480] [2020-10-13 15:37:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:01,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:37:01,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 15:37:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:37:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:01,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:01,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:01,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:01,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:01,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:01,697 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 15:37:01,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575417480] [2020-10-13 15:37:01,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:01,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:01,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700237850] [2020-10-13 15:37:01,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:01,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:01,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:01,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:01,699 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 5 states. [2020-10-13 15:37:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:02,494 INFO L93 Difference]: Finished difference Result 552 states and 836 transitions. [2020-10-13 15:37:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:02,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:37:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:02,496 INFO L225 Difference]: With dead ends: 552 [2020-10-13 15:37:02,496 INFO L226 Difference]: Without dead ends: 327 [2020-10-13 15:37:02,497 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 15:37:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-13 15:37:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 260. [2020-10-13 15:37:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 15:37:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-13 15:37:02,506 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 86 [2020-10-13 15:37:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:02,507 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-13 15:37:02,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-13 15:37:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:37:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:02,508 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 15:37:02,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:37:02,508 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash 251043747, now seen corresponding path program 1 times [2020-10-13 15:37:02,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:02,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808179999] [2020-10-13 15:37:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:37:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:02,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:02,803 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 15:37:02,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808179999] [2020-10-13 15:37:02,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:02,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:02,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670815545] [2020-10-13 15:37:02,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:02,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:02,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:02,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:02,805 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:03,544 INFO L93 Difference]: Finished difference Result 556 states and 847 transitions. [2020-10-13 15:37:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:03,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:37:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:03,547 INFO L225 Difference]: With dead ends: 556 [2020-10-13 15:37:03,547 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:37:03,548 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 15:37:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:37:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:37:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:37:03,556 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 87 [2020-10-13 15:37:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:03,557 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:37:03,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:37:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:03,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:03,564 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 15:37:03,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:37:03,565 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -812579729, now seen corresponding path program 1 times [2020-10-13 15:37:03,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:03,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264703672] [2020-10-13 15:37:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:03,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:04,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:04,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:04,329 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 15:37:04,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264703672] [2020-10-13 15:37:04,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:04,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:04,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320337161] [2020-10-13 15:37:04,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:04,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:04,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:04,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:04,331 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:37:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:05,080 INFO L93 Difference]: Finished difference Result 557 states and 847 transitions. [2020-10-13 15:37:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:05,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:05,083 INFO L225 Difference]: With dead ends: 557 [2020-10-13 15:37:05,083 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:37:05,084 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 15:37:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:37:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-13 15:37:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:37:05,091 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 93 [2020-10-13 15:37:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:05,092 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:37:05,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:37:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:37:05,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:05,093 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 15:37:05,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:37:05,094 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1115692973, now seen corresponding path program 1 times [2020-10-13 15:37:05,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:05,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809394469] [2020-10-13 15:37:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:05,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 15:37:05,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:05,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-13 15:37:05,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:37:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:06,024 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 15:37:06,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809394469] [2020-10-13 15:37:06,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:06,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:06,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660052845] [2020-10-13 15:37:06,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:06,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:06,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:06,026 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:37:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:06,751 INFO L93 Difference]: Finished difference Result 532 states and 811 transitions. [2020-10-13 15:37:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:06,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-13 15:37:06,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:06,754 INFO L225 Difference]: With dead ends: 532 [2020-10-13 15:37:06,754 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 15:37:06,755 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 15:37:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 15:37:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2020-10-13 15:37:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:37:06,763 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 93 [2020-10-13 15:37:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:06,763 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:37:06,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:37:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:06,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:06,765 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 15:37:06,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:37:06,765 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1781711173, now seen corresponding path program 1 times [2020-10-13 15:37:06,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:06,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447573653] [2020-10-13 15:37:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:11,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:11,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:11,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:11,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:11,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:11,844 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 15:37:11,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447573653] [2020-10-13 15:37:11,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:11,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:11,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546719760] [2020-10-13 15:37:11,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:11,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:11,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:11,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:11,847 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:37:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:12,574 INFO L93 Difference]: Finished difference Result 547 states and 830 transitions. [2020-10-13 15:37:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:12,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:12,577 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:37:12,578 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:37:12,579 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 15:37:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:37:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 261. [2020-10-13 15:37:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:37:12,588 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 94 [2020-10-13 15:37:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:12,589 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:37:12,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:37:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:12,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:12,590 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 15:37:12,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:37:12,590 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:12,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:12,591 INFO L82 PathProgramCache]: Analyzing trace with hash 245978820, now seen corresponding path program 1 times [2020-10-13 15:37:12,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:12,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313993124] [2020-10-13 15:37:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:12,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:13,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:13,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:13,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:13,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:13,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:13,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:13,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:13,411 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 15:37:13,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313993124] [2020-10-13 15:37:13,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:13,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:13,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983857366] [2020-10-13 15:37:13,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:13,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:13,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:13,412 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:37:14,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:14,158 INFO L93 Difference]: Finished difference Result 545 states and 826 transitions. [2020-10-13 15:37:14,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:14,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:14,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:14,161 INFO L225 Difference]: With dead ends: 545 [2020-10-13 15:37:14,161 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 15:37:14,163 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 15:37:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 15:37:14,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 261. [2020-10-13 15:37:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:37:14,170 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 94 [2020-10-13 15:37:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:14,171 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:37:14,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:37:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:14,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:14,172 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 15:37:14,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:37:14,173 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:14,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1397552635, now seen corresponding path program 1 times [2020-10-13 15:37:14,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:14,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730138073] [2020-10-13 15:37:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:14,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:14,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:14,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-13 15:37:14,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:14,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:14,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:14,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:14,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:37:14,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:14,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:14,891 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 15:37:14,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730138073] [2020-10-13 15:37:14,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:14,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:14,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694607714] [2020-10-13 15:37:14,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:14,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:14,893 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:37:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:15,635 INFO L93 Difference]: Finished difference Result 544 states and 823 transitions. [2020-10-13 15:37:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:15,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:15,638 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:15,638 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:15,639 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 15:37:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:37:15,646 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 94 [2020-10-13 15:37:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:15,647 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:37:15,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:37:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:15,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:15,648 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 15:37:15,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:37:15,648 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2134799555, now seen corresponding path program 1 times [2020-10-13 15:37:15,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:15,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953663618] [2020-10-13 15:37:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:20,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:37:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:20,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:20,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:20,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:20,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:20,729 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 15:37:20,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953663618] [2020-10-13 15:37:20,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:20,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:20,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91713448] [2020-10-13 15:37:20,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:20,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:20,731 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:37:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:21,422 INFO L93 Difference]: Finished difference Result 522 states and 790 transitions. [2020-10-13 15:37:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:21,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:21,424 INFO L225 Difference]: With dead ends: 522 [2020-10-13 15:37:21,425 INFO L226 Difference]: Without dead ends: 286 [2020-10-13 15:37:21,426 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 15:37:21,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-13 15:37:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 261. [2020-10-13 15:37:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:37:21,433 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 94 [2020-10-13 15:37:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:21,434 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:37:21,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:37:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:21,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:21,435 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 15:37:21,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:37:21,435 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash -107109562, now seen corresponding path program 1 times [2020-10-13 15:37:21,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:21,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406239473] [2020-10-13 15:37:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 652 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:37:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:22,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:22,174 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 15:37:22,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406239473] [2020-10-13 15:37:22,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:22,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:22,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074641315] [2020-10-13 15:37:22,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:22,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:22,175 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:37:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:22,869 INFO L93 Difference]: Finished difference Result 520 states and 786 transitions. [2020-10-13 15:37:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:22,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:22,872 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:37:22,872 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:37:22,873 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 15:37:22,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:37:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:37:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:37:22,880 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 94 [2020-10-13 15:37:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:22,880 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:37:22,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:37:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 15:37:22,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:22,881 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 15:37:22,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:37:22,882 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1750641017, now seen corresponding path program 1 times [2020-10-13 15:37:22,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:22,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380254299] [2020-10-13 15:37:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:37:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:23,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:23,558 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 15:37:23,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380254299] [2020-10-13 15:37:23,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:23,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:23,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809664510] [2020-10-13 15:37:23,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:23,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:23,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:23,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:23,559 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:37:24,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:24,226 INFO L93 Difference]: Finished difference Result 519 states and 783 transitions. [2020-10-13 15:37:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:24,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-13 15:37:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:24,229 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:24,229 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:24,231 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 15:37:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:37:24,238 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 94 [2020-10-13 15:37:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:24,239 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:37:24,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:37:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:24,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:24,240 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 15:37:24,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:37:24,241 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:24,241 INFO L82 PathProgramCache]: Analyzing trace with hash 199387370, now seen corresponding path program 1 times [2020-10-13 15:37:24,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:24,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435660563] [2020-10-13 15:37:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:26,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:37:29,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:37:29,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:29,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:29,322 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 15:37:29,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435660563] [2020-10-13 15:37:29,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:29,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:29,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401244148] [2020-10-13 15:37:29,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:29,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:29,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:29,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:29,323 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:37:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:30,071 INFO L93 Difference]: Finished difference Result 544 states and 815 transitions. [2020-10-13 15:37:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:30,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:37:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:30,074 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:30,074 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:30,075 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 15:37:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:37:30,085 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 95 [2020-10-13 15:37:30,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:30,085 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:37:30,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:30,086 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:37:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 15:37:30,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:30,087 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 15:37:30,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:37:30,087 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash 2138549416, now seen corresponding path program 1 times [2020-10-13 15:37:30,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:30,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129748782] [2020-10-13 15:37:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:32,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:35,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 15:37:35,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:37:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:35,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:35,178 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 15:37:35,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129748782] [2020-10-13 15:37:35,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:35,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:35,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145019030] [2020-10-13 15:37:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:35,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:35,180 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:37:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:35,844 INFO L93 Difference]: Finished difference Result 519 states and 779 transitions. [2020-10-13 15:37:35,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:35,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-13 15:37:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:35,847 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:35,847 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:35,848 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 15:37:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:37:35,854 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 95 [2020-10-13 15:37:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:35,854 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:37:35,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:37:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:37:35,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:35,856 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 15:37:35,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:37:35,856 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1795840831, now seen corresponding path program 1 times [2020-10-13 15:37:35,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:35,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553876239] [2020-10-13 15:37:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:40,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:40,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:40,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:40,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:40,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:40,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:40,955 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 15:37:40,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553876239] [2020-10-13 15:37:40,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:40,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:40,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369278649] [2020-10-13 15:37:40,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:40,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:40,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:40,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:40,956 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:37:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:41,700 INFO L93 Difference]: Finished difference Result 544 states and 811 transitions. [2020-10-13 15:37:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:41,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:37:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:41,703 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:41,703 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:41,704 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 15:37:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:37:41,711 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 96 [2020-10-13 15:37:41,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:41,712 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:37:41,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:37:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 15:37:41,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:41,713 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 15:37:41,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:37:41,713 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1780322113, now seen corresponding path program 1 times [2020-10-13 15:37:41,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:41,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756669693] [2020-10-13 15:37:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:41,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:42,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:37:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:46,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:46,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:46,802 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 15:37:46,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756669693] [2020-10-13 15:37:46,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:46,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:46,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696636833] [2020-10-13 15:37:46,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:46,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:46,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:46,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:46,803 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:37:47,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:47,479 INFO L93 Difference]: Finished difference Result 519 states and 775 transitions. [2020-10-13 15:37:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:47,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 15:37:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:47,481 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:47,481 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:47,482 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 15:37:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:37:47,490 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 96 [2020-10-13 15:37:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:47,491 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:37:47,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:37:47,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:37:47,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:47,492 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 15:37:47,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:37:47,492 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:47,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:47,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1535744027, now seen corresponding path program 1 times [2020-10-13 15:37:47,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:47,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094218692] [2020-10-13 15:37:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:51,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:52,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:52,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:52,596 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 15:37:52,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094218692] [2020-10-13 15:37:52,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:52,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:52,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518819637] [2020-10-13 15:37:52,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:52,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:52,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:52,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:52,597 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:37:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:53,353 INFO L93 Difference]: Finished difference Result 544 states and 807 transitions. [2020-10-13 15:37:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:53,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:37:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:53,355 INFO L225 Difference]: With dead ends: 544 [2020-10-13 15:37:53,355 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 15:37:53,356 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 15:37:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 15:37:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 261. [2020-10-13 15:37:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:37:53,364 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 97 [2020-10-13 15:37:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:53,364 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:37:53,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:37:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:37:53,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:53,365 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 15:37:53,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:37:53,366 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2016824285, now seen corresponding path program 1 times [2020-10-13 15:37:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:53,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430428001] [2020-10-13 15:37:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:37:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:37:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:58,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:37:58,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:37:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:37:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:37:58,479 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 15:37:58,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430428001] [2020-10-13 15:37:58,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:37:58,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:37:58,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323452685] [2020-10-13 15:37:58,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:37:58,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:37:58,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:37:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:37:58,480 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:37:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:37:59,147 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-13 15:37:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:37:59,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-13 15:37:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:37:59,149 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:37:59,150 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:37:59,150 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 15:37:59,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:37:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:37:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:37:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:37:59,157 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 97 [2020-10-13 15:37:59,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:37:59,158 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:37:59,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:37:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:37:59,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:37:59,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:37:59,159 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 15:37:59,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:37:59,159 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:37:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:37:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1277273178, now seen corresponding path program 1 times [2020-10-13 15:37:59,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:37:59,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59604066] [2020-10-13 15:37:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:37:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:37:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:37:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:04,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:04,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:04,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:04,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:04,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:04,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:04,262 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 15:38:04,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59604066] [2020-10-13 15:38:04,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:04,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:04,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334573859] [2020-10-13 15:38:04,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:04,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:04,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:04,263 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:38:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:04,987 INFO L93 Difference]: Finished difference Result 534 states and 791 transitions. [2020-10-13 15:38:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:04,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:04,990 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:04,990 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:38:04,991 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 15:38:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:38:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:38:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 383 transitions. [2020-10-13 15:38:04,998 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 383 transitions. Word has length 98 [2020-10-13 15:38:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:04,998 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 383 transitions. [2020-10-13 15:38:04,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 383 transitions. [2020-10-13 15:38:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 15:38:04,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:05,000 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 15:38:05,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:38:05,000 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:05,000 INFO L82 PathProgramCache]: Analyzing trace with hash -751312932, now seen corresponding path program 1 times [2020-10-13 15:38:05,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:05,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419321216] [2020-10-13 15:38:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:05,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:05,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 15:38:10,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:38:10,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:38:10,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:10,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:38:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:10,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:10,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:10,107 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 15:38:10,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419321216] [2020-10-13 15:38:10,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:10,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:10,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567192028] [2020-10-13 15:38:10,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:10,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:10,109 INFO L87 Difference]: Start difference. First operand 261 states and 383 transitions. Second operand 5 states. [2020-10-13 15:38:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:10,756 INFO L93 Difference]: Finished difference Result 509 states and 755 transitions. [2020-10-13 15:38:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:10,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 15:38:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:10,759 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:38:10,759 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:38:10,760 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 15:38:10,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:38:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:38:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 382 transitions. [2020-10-13 15:38:10,767 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 382 transitions. Word has length 98 [2020-10-13 15:38:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:10,767 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 382 transitions. [2020-10-13 15:38:10,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 382 transitions. [2020-10-13 15:38:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:10,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:10,769 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 15:38:10,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:38:10,769 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:10,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1487890754, now seen corresponding path program 1 times [2020-10-13 15:38:10,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:10,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036276937] [2020-10-13 15:38:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:10,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:11,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:38:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:11,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:11,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:11,903 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 15:38:11,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036276937] [2020-10-13 15:38:11,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:11,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:11,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555049307] [2020-10-13 15:38:11,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:11,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:11,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:11,905 INFO L87 Difference]: Start difference. First operand 261 states and 382 transitions. Second operand 5 states. [2020-10-13 15:38:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:12,656 INFO L93 Difference]: Finished difference Result 534 states and 787 transitions. [2020-10-13 15:38:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:12,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:12,659 INFO L225 Difference]: With dead ends: 534 [2020-10-13 15:38:12,659 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 15:38:12,660 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 15:38:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 15:38:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-10-13 15:38:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:38:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 381 transitions. [2020-10-13 15:38:12,667 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 381 transitions. Word has length 102 [2020-10-13 15:38:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:12,668 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 381 transitions. [2020-10-13 15:38:12,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 381 transitions. [2020-10-13 15:38:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:38:12,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:12,669 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 15:38:12,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:38:12,669 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:12,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1420291132, now seen corresponding path program 1 times [2020-10-13 15:38:12,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:12,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773000498] [2020-10-13 15:38:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:12,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:13,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:38:13,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:13,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-13 15:38:13,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:38:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:13,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:13,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:13,089 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 15:38:13,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773000498] [2020-10-13 15:38:13,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:13,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:13,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792974093] [2020-10-13 15:38:13,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:13,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:13,091 INFO L87 Difference]: Start difference. First operand 261 states and 381 transitions. Second operand 5 states. [2020-10-13 15:38:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:13,765 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2020-10-13 15:38:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:13,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:38:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:13,768 INFO L225 Difference]: With dead ends: 560 [2020-10-13 15:38:13,769 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 15:38:13,769 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 15:38:13,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 15:38:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 287. [2020-10-13 15:38:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:38:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:38:13,777 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 102 [2020-10-13 15:38:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:13,777 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:38:13,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:38:13,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:38:13,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:13,779 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 15:38:13,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:38:13,779 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:13,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2050834932, now seen corresponding path program 1 times [2020-10-13 15:38:13,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:13,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353841647] [2020-10-13 15:38:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:38:14,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-13 15:38:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:14,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:14,582 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 15:38:14,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353841647] [2020-10-13 15:38:14,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:14,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:14,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934614379] [2020-10-13 15:38:14,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:14,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:14,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:14,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:14,583 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:38:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:15,529 INFO L93 Difference]: Finished difference Result 663 states and 1000 transitions. [2020-10-13 15:38:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:15,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:38:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:15,538 INFO L225 Difference]: With dead ends: 663 [2020-10-13 15:38:15,538 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 15:38:15,538 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 15:38:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 15:38:15,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 315. [2020-10-13 15:38:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 477 transitions. [2020-10-13 15:38:15,545 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 477 transitions. Word has length 107 [2020-10-13 15:38:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:15,545 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 477 transitions. [2020-10-13 15:38:15,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:15,545 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 477 transitions. [2020-10-13 15:38:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:15,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:15,546 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 15:38:15,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:38:15,546 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:15,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1073573527, now seen corresponding path program 1 times [2020-10-13 15:38:15,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:15,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836784328] [2020-10-13 15:38:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:17,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:17,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2424 [2020-10-13 15:38:17,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:38:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:18,061 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 15:38:18,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836784328] [2020-10-13 15:38:18,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:18,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:18,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379956720] [2020-10-13 15:38:18,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:18,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:18,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:18,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:18,062 INFO L87 Difference]: Start difference. First operand 315 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:18,803 INFO L93 Difference]: Finished difference Result 642 states and 977 transitions. [2020-10-13 15:38:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:18,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:18,806 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:38:18,807 INFO L226 Difference]: Without dead ends: 352 [2020-10-13 15:38:18,807 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 15:38:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-13 15:38:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2020-10-13 15:38:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-13 15:38:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 476 transitions. [2020-10-13 15:38:18,813 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 476 transitions. Word has length 108 [2020-10-13 15:38:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:18,814 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 476 transitions. [2020-10-13 15:38:18,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 476 transitions. [2020-10-13 15:38:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:38:18,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:18,815 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 15:38:18,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:38:18,816 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1429810141, now seen corresponding path program 1 times [2020-10-13 15:38:18,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:18,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278567103] [2020-10-13 15:38:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 15:38:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:19,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:19,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:19,570 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 15:38:19,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278567103] [2020-10-13 15:38:19,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:19,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:19,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125455911] [2020-10-13 15:38:19,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:19,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:19,571 INFO L87 Difference]: Start difference. First operand 315 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:20,466 INFO L93 Difference]: Finished difference Result 683 states and 1034 transitions. [2020-10-13 15:38:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:20,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:38:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:20,469 INFO L225 Difference]: With dead ends: 683 [2020-10-13 15:38:20,469 INFO L226 Difference]: Without dead ends: 393 [2020-10-13 15:38:20,471 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 15:38:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-13 15:38:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 316. [2020-10-13 15:38:20,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 477 transitions. [2020-10-13 15:38:20,481 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 477 transitions. Word has length 108 [2020-10-13 15:38:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:20,482 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 477 transitions. [2020-10-13 15:38:20,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 477 transitions. [2020-10-13 15:38:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:20,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:20,483 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 15:38:20,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:38:20,484 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:20,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1792123586, now seen corresponding path program 1 times [2020-10-13 15:38:20,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:20,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929497136] [2020-10-13 15:38:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:22,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:22,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2426 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:23,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:23,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:23,017 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 15:38:23,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929497136] [2020-10-13 15:38:23,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:23,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:23,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887628432] [2020-10-13 15:38:23,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:23,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:23,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:23,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:23,018 INFO L87 Difference]: Start difference. First operand 316 states and 477 transitions. Second operand 5 states. [2020-10-13 15:38:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:23,760 INFO L93 Difference]: Finished difference Result 642 states and 974 transitions. [2020-10-13 15:38:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:23,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:23,763 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:38:23,764 INFO L226 Difference]: Without dead ends: 351 [2020-10-13 15:38:23,764 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 15:38:23,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-13 15:38:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 316. [2020-10-13 15:38:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 476 transitions. [2020-10-13 15:38:23,770 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 476 transitions. Word has length 109 [2020-10-13 15:38:23,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:23,771 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 476 transitions. [2020-10-13 15:38:23,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 476 transitions. [2020-10-13 15:38:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:38:23,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:23,772 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 15:38:23,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:38:23,772 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash -856836182, now seen corresponding path program 1 times [2020-10-13 15:38:23,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:23,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483548538] [2020-10-13 15:38:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:38:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:24,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:24,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:24,218 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 15:38:24,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483548538] [2020-10-13 15:38:24,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:24,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:24,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193532270] [2020-10-13 15:38:24,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:24,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:24,220 INFO L87 Difference]: Start difference. First operand 316 states and 476 transitions. Second operand 5 states. [2020-10-13 15:38:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:24,993 INFO L93 Difference]: Finished difference Result 639 states and 968 transitions. [2020-10-13 15:38:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:24,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:38:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:24,997 INFO L225 Difference]: With dead ends: 639 [2020-10-13 15:38:24,997 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 15:38:24,998 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 15:38:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 15:38:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 316. [2020-10-13 15:38:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:38:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 475 transitions. [2020-10-13 15:38:25,004 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 475 transitions. Word has length 109 [2020-10-13 15:38:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:25,004 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 475 transitions. [2020-10-13 15:38:25,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:25,005 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 475 transitions. [2020-10-13 15:38:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:38:25,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:25,006 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 15:38:25,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:38:25,006 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:25,007 INFO L82 PathProgramCache]: Analyzing trace with hash 892244443, now seen corresponding path program 1 times [2020-10-13 15:38:25,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:25,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522986168] [2020-10-13 15:38:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:26,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:38:26,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:38:26,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:26,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:26,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:26,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:26,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:26,360 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 15:38:26,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522986168] [2020-10-13 15:38:26,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:26,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:26,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579035349] [2020-10-13 15:38:26,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:26,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:26,362 INFO L87 Difference]: Start difference. First operand 316 states and 475 transitions. Second operand 5 states. [2020-10-13 15:38:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:27,072 INFO L93 Difference]: Finished difference Result 654 states and 991 transitions. [2020-10-13 15:38:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:27,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:38:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:27,076 INFO L225 Difference]: With dead ends: 654 [2020-10-13 15:38:27,076 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:27,076 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 15:38:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 511 transitions. [2020-10-13 15:38:27,084 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 511 transitions. Word has length 111 [2020-10-13 15:38:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:27,084 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 511 transitions. [2020-10-13 15:38:27,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 511 transitions. [2020-10-13 15:38:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:27,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:27,086 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 15:38:27,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:38:27,087 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:27,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:27,087 INFO L82 PathProgramCache]: Analyzing trace with hash 756455703, now seen corresponding path program 1 times [2020-10-13 15:38:27,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:27,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508794570] [2020-10-13 15:38:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 686 [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:27,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:27,864 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 15:38:27,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508794570] [2020-10-13 15:38:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:27,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802104112] [2020-10-13 15:38:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:27,865 INFO L87 Difference]: Start difference. First operand 337 states and 511 transitions. Second operand 5 states. [2020-10-13 15:38:28,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:28,904 INFO L93 Difference]: Finished difference Result 763 states and 1168 transitions. [2020-10-13 15:38:28,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:28,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:28,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:28,908 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:38:28,908 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:38:28,908 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 15:38:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:38:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:38:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:38:28,916 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:38:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:28,917 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:38:28,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:38:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:38:28,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:28,918 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 15:38:28,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:38:28,918 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash 539390263, now seen corresponding path program 1 times [2020-10-13 15:38:28,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:28,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250404727] [2020-10-13 15:38:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:28,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:29,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:29,656 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 15:38:29,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250404727] [2020-10-13 15:38:29,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:29,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:29,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700044943] [2020-10-13 15:38:29,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:29,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:29,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:29,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:29,657 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:38:30,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:30,666 INFO L93 Difference]: Finished difference Result 819 states and 1268 transitions. [2020-10-13 15:38:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:30,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:38:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:30,669 INFO L225 Difference]: With dead ends: 819 [2020-10-13 15:38:30,670 INFO L226 Difference]: Without dead ends: 479 [2020-10-13 15:38:30,670 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 15:38:30,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-13 15:38:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 365. [2020-10-13 15:38:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 561 transitions. [2020-10-13 15:38:30,678 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 561 transitions. Word has length 112 [2020-10-13 15:38:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:30,678 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 561 transitions. [2020-10-13 15:38:30,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 561 transitions. [2020-10-13 15:38:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:30,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:30,680 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 15:38:30,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:38:30,680 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash -146029206, now seen corresponding path program 1 times [2020-10-13 15:38:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:30,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581123695] [2020-10-13 15:38:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:38:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:31,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:31,786 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 15:38:31,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581123695] [2020-10-13 15:38:31,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:31,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:31,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687866711] [2020-10-13 15:38:31,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:31,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:31,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:31,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:31,788 INFO L87 Difference]: Start difference. First operand 365 states and 561 transitions. Second operand 5 states. [2020-10-13 15:38:32,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:32,561 INFO L93 Difference]: Finished difference Result 737 states and 1138 transitions. [2020-10-13 15:38:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:32,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:32,565 INFO L225 Difference]: With dead ends: 737 [2020-10-13 15:38:32,565 INFO L226 Difference]: Without dead ends: 397 [2020-10-13 15:38:32,566 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 15:38:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-13 15:38:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 365. [2020-10-13 15:38:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:32,574 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:38:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:32,574 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:32,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:32,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:32,575 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 15:38:32,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:38:32,576 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1738493390, now seen corresponding path program 1 times [2020-10-13 15:38:32,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:32,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736064671] [2020-10-13 15:38:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:33,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:33,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:33,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:33,393 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 15:38:33,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736064671] [2020-10-13 15:38:33,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:33,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:33,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115967175] [2020-10-13 15:38:33,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:33,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:33,396 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:34,334 INFO L93 Difference]: Finished difference Result 811 states and 1252 transitions. [2020-10-13 15:38:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:34,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:34,337 INFO L225 Difference]: With dead ends: 811 [2020-10-13 15:38:34,337 INFO L226 Difference]: Without dead ends: 471 [2020-10-13 15:38:34,338 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 15:38:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-13 15:38:34,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 365. [2020-10-13 15:38:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:34,343 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 113 [2020-10-13 15:38:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:34,344 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:34,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:38:34,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:34,345 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 15:38:34,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:38:34,345 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash 122412562, now seen corresponding path program 1 times [2020-10-13 15:38:34,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:34,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386147924] [2020-10-13 15:38:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:35,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:38:35,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-13 15:38:35,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:38:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:35,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:35,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:35,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:35,119 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 15:38:35,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386147924] [2020-10-13 15:38:35,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:35,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:35,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556951230] [2020-10-13 15:38:35,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:35,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:35,120 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:36,099 INFO L93 Difference]: Finished difference Result 783 states and 1202 transitions. [2020-10-13 15:38:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:36,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:38:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:36,102 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:38:36,102 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:38:36,103 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 15:38:36,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:38:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:38:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 510 transitions. [2020-10-13 15:38:36,109 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 510 transitions. Word has length 113 [2020-10-13 15:38:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:36,109 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 510 transitions. [2020-10-13 15:38:36,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 510 transitions. [2020-10-13 15:38:36,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:36,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:36,110 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 15:38:36,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:38:36,110 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:36,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1359667634, now seen corresponding path program 1 times [2020-10-13 15:38:36,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:36,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708806665] [2020-10-13 15:38:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:38:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:38:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:36,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:36,882 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 15:38:36,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708806665] [2020-10-13 15:38:36,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:36,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:36,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749641812] [2020-10-13 15:38:36,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:36,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:36,884 INFO L87 Difference]: Start difference. First operand 337 states and 510 transitions. Second operand 5 states. [2020-10-13 15:38:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:37,863 INFO L93 Difference]: Finished difference Result 763 states and 1166 transitions. [2020-10-13 15:38:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:37,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:37,866 INFO L225 Difference]: With dead ends: 763 [2020-10-13 15:38:37,866 INFO L226 Difference]: Without dead ends: 451 [2020-10-13 15:38:37,866 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 15:38:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-13 15:38:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 365. [2020-10-13 15:38:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:37,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 560 transitions. [2020-10-13 15:38:37,874 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 560 transitions. Word has length 114 [2020-10-13 15:38:37,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:37,874 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 560 transitions. [2020-10-13 15:38:37,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:37,874 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 560 transitions. [2020-10-13 15:38:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:38:37,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:37,876 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 15:38:37,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:38:37,876 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:37,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2008010017, now seen corresponding path program 1 times [2020-10-13 15:38:37,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:37,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592954642] [2020-10-13 15:38:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 935 [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:38:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:38,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:38,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:38,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:38,919 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 15:38:38,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592954642] [2020-10-13 15:38:38,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:38,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:38,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57938649] [2020-10-13 15:38:38,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:38,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:38,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:38,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:38,920 INFO L87 Difference]: Start difference. First operand 365 states and 560 transitions. Second operand 5 states. [2020-10-13 15:38:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:39,683 INFO L93 Difference]: Finished difference Result 735 states and 1134 transitions. [2020-10-13 15:38:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:39,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:38:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:39,686 INFO L225 Difference]: With dead ends: 735 [2020-10-13 15:38:39,686 INFO L226 Difference]: Without dead ends: 395 [2020-10-13 15:38:39,687 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 15:38:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-13 15:38:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 365. [2020-10-13 15:38:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-13 15:38:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 559 transitions. [2020-10-13 15:38:39,696 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 559 transitions. Word has length 114 [2020-10-13 15:38:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:39,696 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 559 transitions. [2020-10-13 15:38:39,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 559 transitions. [2020-10-13 15:38:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:38:39,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:39,697 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 15:38:39,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:38:39,697 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash -218792713, now seen corresponding path program 1 times [2020-10-13 15:38:39,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:39,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135683210] [2020-10-13 15:38:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:38:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:38:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:40,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:40,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:40,482 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 15:38:40,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135683210] [2020-10-13 15:38:40,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:40,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:40,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837657147] [2020-10-13 15:38:40,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:40,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:40,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:40,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:40,483 INFO L87 Difference]: Start difference. First operand 365 states and 559 transitions. Second operand 5 states. [2020-10-13 15:38:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:41,469 INFO L93 Difference]: Finished difference Result 783 states and 1200 transitions. [2020-10-13 15:38:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:41,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:38:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:41,472 INFO L225 Difference]: With dead ends: 783 [2020-10-13 15:38:41,472 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 15:38:41,473 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 15:38:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 15:38:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 337. [2020-10-13 15:38:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2020-10-13 15:38:41,479 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 115 [2020-10-13 15:38:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:41,479 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2020-10-13 15:38:41,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2020-10-13 15:38:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:38:41,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:41,480 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 15:38:41,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:38:41,480 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1593733952, now seen corresponding path program 1 times [2020-10-13 15:38:41,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:41,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341070879] [2020-10-13 15:38:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:41,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:38:46,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:38:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:46,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:46,566 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 15:38:46,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341070879] [2020-10-13 15:38:46,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:46,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:46,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792288594] [2020-10-13 15:38:46,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:46,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:46,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:46,567 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand 5 states. [2020-10-13 15:38:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:47,263 INFO L93 Difference]: Finished difference Result 676 states and 1025 transitions. [2020-10-13 15:38:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:47,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:38:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:47,265 INFO L225 Difference]: With dead ends: 676 [2020-10-13 15:38:47,266 INFO L226 Difference]: Without dead ends: 364 [2020-10-13 15:38:47,266 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 15:38:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-13 15:38:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 337. [2020-10-13 15:38:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 508 transitions. [2020-10-13 15:38:47,272 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 508 transitions. Word has length 116 [2020-10-13 15:38:47,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:47,272 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 508 transitions. [2020-10-13 15:38:47,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 508 transitions. [2020-10-13 15:38:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:38:47,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:47,273 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 15:38:47,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:38:47,273 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:47,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:47,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1977892490, now seen corresponding path program 1 times [2020-10-13 15:38:47,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:47,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855132087] [2020-10-13 15:38:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:38:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:47,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:47,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:47,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:47,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:47,965 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 15:38:47,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855132087] [2020-10-13 15:38:47,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:47,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:47,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462192051] [2020-10-13 15:38:47,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:47,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:47,966 INFO L87 Difference]: Start difference. First operand 337 states and 508 transitions. Second operand 5 states. [2020-10-13 15:38:48,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:48,652 INFO L93 Difference]: Finished difference Result 675 states and 1022 transitions. [2020-10-13 15:38:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:48,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:38:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:48,654 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:38:48,654 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:48,655 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 15:38:48,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:48,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 507 transitions. [2020-10-13 15:38:48,662 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 507 transitions. Word has length 116 [2020-10-13 15:38:48,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:48,662 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 507 transitions. [2020-10-13 15:38:48,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 507 transitions. [2020-10-13 15:38:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:38:48,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:48,663 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 15:38:48,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:38:48,664 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:48,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:48,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1758971141, now seen corresponding path program 1 times [2020-10-13 15:38:48,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:48,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448542491] [2020-10-13 15:38:48,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:48,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:38:53,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:38:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:38:53,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:38:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:38:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:38:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:38:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:53,781 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 15:38:53,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448542491] [2020-10-13 15:38:53,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:53,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:53,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843563904] [2020-10-13 15:38:53,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:53,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:53,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:53,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:53,783 INFO L87 Difference]: Start difference. First operand 337 states and 507 transitions. Second operand 5 states. [2020-10-13 15:38:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:54,494 INFO L93 Difference]: Finished difference Result 675 states and 1020 transitions. [2020-10-13 15:38:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:54,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:38:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:54,497 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:38:54,497 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:38:54,498 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 15:38:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:38:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:38:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-10-13 15:38:54,504 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 117 [2020-10-13 15:38:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:54,504 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-10-13 15:38:54,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:54,504 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-10-13 15:38:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:54,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:54,505 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 15:38:54,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:38:54,505 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:54,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:54,505 INFO L82 PathProgramCache]: Analyzing trace with hash -822875083, now seen corresponding path program 1 times [2020-10-13 15:38:54,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:54,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419475535] [2020-10-13 15:38:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:38:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:55,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:55,729 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 15:38:55,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419475535] [2020-10-13 15:38:55,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:55,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:55,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627327920] [2020-10-13 15:38:55,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:55,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:55,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:55,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:55,731 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 5 states. [2020-10-13 15:38:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:56,483 INFO L93 Difference]: Finished difference Result 679 states and 1026 transitions. [2020-10-13 15:38:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:56,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:56,486 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:38:56,486 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:38:56,487 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 15:38:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:38:56,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:38:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 505 transitions. [2020-10-13 15:38:56,494 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 505 transitions. Word has length 118 [2020-10-13 15:38:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:56,494 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 505 transitions. [2020-10-13 15:38:56,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 505 transitions. [2020-10-13 15:38:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:56,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:56,495 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 15:38:56,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:38:56,496 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash -645321643, now seen corresponding path program 1 times [2020-10-13 15:38:56,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:56,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985648405] [2020-10-13 15:38:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:38:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:38:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:57,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:38:57,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:38:57,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:38:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:38:57,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:38:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:38:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:38:57,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:38:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:38:57,675 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 15:38:57,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985648405] [2020-10-13 15:38:57,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:38:57,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:38:57,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540159666] [2020-10-13 15:38:57,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:38:57,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:38:57,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:38:57,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:38:57,677 INFO L87 Difference]: Start difference. First operand 337 states and 505 transitions. Second operand 5 states. [2020-10-13 15:38:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:38:58,416 INFO L93 Difference]: Finished difference Result 679 states and 1024 transitions. [2020-10-13 15:38:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:38:58,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:38:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:38:58,419 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:38:58,420 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 15:38:58,420 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 15:38:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 15:38:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 337. [2020-10-13 15:38:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:38:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 504 transitions. [2020-10-13 15:38:58,426 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 504 transitions. Word has length 118 [2020-10-13 15:38:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:38:58,427 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 504 transitions. [2020-10-13 15:38:58,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:38:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 504 transitions. [2020-10-13 15:38:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:38:58,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:38:58,428 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 15:38:58,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:38:58,428 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:38:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:38:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1396669820, now seen corresponding path program 1 times [2020-10-13 15:38:58,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:38:58,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181692696] [2020-10-13 15:38:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:38:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:38:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:38:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:03,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:03,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:03,510 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 15:39:03,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181692696] [2020-10-13 15:39:03,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:03,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:03,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981611292] [2020-10-13 15:39:03,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:03,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:03,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:03,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:03,512 INFO L87 Difference]: Start difference. First operand 337 states and 504 transitions. Second operand 5 states. [2020-10-13 15:39:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:04,222 INFO L93 Difference]: Finished difference Result 675 states and 1014 transitions. [2020-10-13 15:39:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:04,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:39:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:04,224 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:39:04,224 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:39:04,225 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 15:39:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:39:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 337. [2020-10-13 15:39:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 503 transitions. [2020-10-13 15:39:04,232 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 503 transitions. Word has length 118 [2020-10-13 15:39:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:04,232 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 503 transitions. [2020-10-13 15:39:04,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 503 transitions. [2020-10-13 15:39:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:04,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:04,233 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 15:39:04,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:39:04,233 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash -209867365, now seen corresponding path program 1 times [2020-10-13 15:39:04,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:04,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695695208] [2020-10-13 15:39:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:05,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:39:05,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:05,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:05,226 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 15:39:05,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695695208] [2020-10-13 15:39:05,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:05,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:05,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897155055] [2020-10-13 15:39:05,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:05,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:05,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:05,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:05,228 INFO L87 Difference]: Start difference. First operand 337 states and 503 transitions. Second operand 5 states. [2020-10-13 15:39:05,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:05,951 INFO L93 Difference]: Finished difference Result 677 states and 1018 transitions. [2020-10-13 15:39:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:05,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:05,954 INFO L225 Difference]: With dead ends: 677 [2020-10-13 15:39:05,954 INFO L226 Difference]: Without dead ends: 365 [2020-10-13 15:39:05,955 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 15:39:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-13 15:39:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 337. [2020-10-13 15:39:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:05,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 502 transitions. [2020-10-13 15:39:05,963 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 502 transitions. Word has length 119 [2020-10-13 15:39:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:05,964 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 502 transitions. [2020-10-13 15:39:05,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 502 transitions. [2020-10-13 15:39:05,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:05,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:05,965 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 15:39:05,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:39:05,965 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:05,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:05,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1982980635, now seen corresponding path program 1 times [2020-10-13 15:39:05,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:05,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750641377] [2020-10-13 15:39:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:39:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:06,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:06,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:06,993 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 15:39:06,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750641377] [2020-10-13 15:39:06,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:06,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:06,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861659119] [2020-10-13 15:39:06,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:06,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:06,995 INFO L87 Difference]: Start difference. First operand 337 states and 502 transitions. Second operand 5 states. [2020-10-13 15:39:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:07,743 INFO L93 Difference]: Finished difference Result 673 states and 1011 transitions. [2020-10-13 15:39:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:07,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:39:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:07,747 INFO L225 Difference]: With dead ends: 673 [2020-10-13 15:39:07,747 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:39:07,748 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 15:39:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:39:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 337. [2020-10-13 15:39:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-10-13 15:39:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 501 transitions. [2020-10-13 15:39:07,753 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 501 transitions. Word has length 119 [2020-10-13 15:39:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:07,753 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 501 transitions. [2020-10-13 15:39:07,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 501 transitions. [2020-10-13 15:39:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:39:07,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:07,754 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 15:39:07,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 15:39:07,755 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:07,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1719326400, now seen corresponding path program 1 times [2020-10-13 15:39:07,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:07,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705473774] [2020-10-13 15:39:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:08,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking...