/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.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:31:49,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:31:49,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:31:49,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:31:49,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:31:49,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:31:49,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:31:49,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:31:49,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:31:49,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:31:49,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:31:49,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:31:49,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:31:49,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:31:49,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:31:49,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:31:49,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:31:49,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:31:49,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:31:49,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:31:49,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:31:49,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:31:49,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:31:49,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:31:49,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:31:49,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:31:49,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:31:49,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:31:49,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:31:49,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:31:49,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:31:49,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:31:49,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:31:49,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:31:49,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:31:49,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:31:49,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:31:49,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:31:49,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:31:49,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:31:49,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:31:49,684 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 15:31:49,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:31:49,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:31:49,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:31:49,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:31:49,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:31:49,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:31:49,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:31:49,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:31:49,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:31:49,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:31:49,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:31:49,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:31:49,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:31:49,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:31:49,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:31:49,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:31:49,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:31:49,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:31:49,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:31:49,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:31:49,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:31:49,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:31:49,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:31:49,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:31:49,714 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 15:31:50,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:31:50,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:31:50,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:31:50,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:31:50,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:31:50,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-13 15:31:50,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97e0be26f/558ed822c3534ddfbaecff085e8c0907/FLAG8c0f7901e [2020-10-13 15:31:50,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:31:50,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-13 15:31:50,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97e0be26f/558ed822c3534ddfbaecff085e8c0907/FLAG8c0f7901e [2020-10-13 15:31:50,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97e0be26f/558ed822c3534ddfbaecff085e8c0907 [2020-10-13 15:31:50,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:31:50,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:31:50,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:50,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:31:50,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:31:50,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:50" (1/1) ... [2020-10-13 15:31:50,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e3b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:50, skipping insertion in model container [2020-10-13 15:31:50,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:31:50" (1/1) ... [2020-10-13 15:31:50,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:31:51,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:31:51,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:51,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:31:51,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:31:51,938 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:31:51,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51 WrapperNode [2020-10-13 15:31:51,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:31:51,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:31:51,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:31:51,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:31:51,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:51,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:51,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:51,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:52,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:52,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:52,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (1/1) ... [2020-10-13 15:31:52,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:31:52,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:31:52,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:31:52,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:31:52,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (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 15:31:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:31:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:31:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:31:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:31:52,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:31:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:31:52,151 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:31:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:31:52,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:31:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:31:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:31:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:31:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:31:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:31:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:31:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:31:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:31:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:31:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:31:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:31:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:31:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:31:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:31:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:31:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:31:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:31:52,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:31:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:31:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:31:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:31:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:31:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:31:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:31:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:31:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:31:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:31:52,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:31:52,664 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:31:53,396 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:31:53,396 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:31:53,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:31:53,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:31:53,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:53 BoogieIcfgContainer [2020-10-13 15:31:53,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:31:53,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:31:53,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:31:53,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:31:53,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:31:50" (1/3) ... [2020-10-13 15:31:53,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535d7e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:53, skipping insertion in model container [2020-10-13 15:31:53,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:31:51" (2/3) ... [2020-10-13 15:31:53,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535d7e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:31:53, skipping insertion in model container [2020-10-13 15:31:53,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:31:53" (3/3) ... [2020-10-13 15:31:53,435 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2020-10-13 15:31:53,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:31:53,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:31:53,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:31:53,494 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:31:53,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:31:53,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:31:53,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:31:53,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:31:53,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:31:53,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:31:53,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:31:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-13 15:31:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 15:31:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:53,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:53,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1486764871, now seen corresponding path program 1 times [2020-10-13 15:31:53,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:53,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513404618] [2020-10-13 15:31:53,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:53,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:31:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:31:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-13 15:31:54,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:54,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:31:54,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:31:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:54,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:31:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:55,007 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 15:31:55,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513404618] [2020-10-13 15:31:55,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:55,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:55,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281952210] [2020-10-13 15:31:55,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:55,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:55,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:55,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:55,041 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 5 states. [2020-10-13 15:31:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:56,018 INFO L93 Difference]: Finished difference Result 327 states and 541 transitions. [2020-10-13 15:31:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:56,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 15:31:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:56,038 INFO L225 Difference]: With dead ends: 327 [2020-10-13 15:31:56,039 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:31:56,045 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 15:31:56,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:31:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:31:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:31:56,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 225 transitions. [2020-10-13 15:31:56,134 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 225 transitions. Word has length 52 [2020-10-13 15:31:56,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:56,135 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 225 transitions. [2020-10-13 15:31:56,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 225 transitions. [2020-10-13 15:31:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:31:56,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:56,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:56,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:31:56,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:56,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1558764665, now seen corresponding path program 1 times [2020-10-13 15:31:56,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:56,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889697899] [2020-10-13 15:31:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:57,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:31:57,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:57,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1470 [2020-10-13 15:31:57,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:31:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:57,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:57,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:57,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:31:57,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:57,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:57,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:57,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:57,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:57,782 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 15:31:57,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889697899] [2020-10-13 15:31:57,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:57,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:57,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217508311] [2020-10-13 15:31:57,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:57,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:57,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:57,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:57,787 INFO L87 Difference]: Start difference. First operand 149 states and 225 transitions. Second operand 5 states. [2020-10-13 15:31:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:31:58,549 INFO L93 Difference]: Finished difference Result 290 states and 435 transitions. [2020-10-13 15:31:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:31:58,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:31:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:31:58,552 INFO L225 Difference]: With dead ends: 290 [2020-10-13 15:31:58,552 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 15:31:58,555 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 15:31:58,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 15:31:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-13 15:31:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:31:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2020-10-13 15:31:58,567 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 65 [2020-10-13 15:31:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:31:58,568 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2020-10-13 15:31:58,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:31:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2020-10-13 15:31:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:31:58,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:31:58,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:31:58,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:31:58,571 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:31:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:31:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1632716410, now seen corresponding path program 1 times [2020-10-13 15:31:58,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:31:58,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043392753] [2020-10-13 15:31:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:31:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:59,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:31:59,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:31:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-10-13 15:31:59,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:31:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:31:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:31:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:31:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:31:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:31:59,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:31:59,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:31:59,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:31:59,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:31:59,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:31:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:31:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:31:59,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:31:59,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:31:59,884 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 15:31:59,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043392753] [2020-10-13 15:31:59,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:31:59,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:31:59,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150634672] [2020-10-13 15:31:59,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:31:59,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:31:59,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:31:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:31:59,887 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand 5 states. [2020-10-13 15:32:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:00,539 INFO L93 Difference]: Finished difference Result 288 states and 432 transitions. [2020-10-13 15:32:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:00,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:32:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:00,542 INFO L225 Difference]: With dead ends: 288 [2020-10-13 15:32:00,543 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:32:00,544 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 15:32:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:32:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 149. [2020-10-13 15:32:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 223 transitions. [2020-10-13 15:32:00,571 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 223 transitions. Word has length 66 [2020-10-13 15:32:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:00,572 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 223 transitions. [2020-10-13 15:32:00,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 223 transitions. [2020-10-13 15:32:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:32:00,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:00,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:00,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:32:00,574 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:00,577 INFO L82 PathProgramCache]: Analyzing trace with hash 169235989, now seen corresponding path program 1 times [2020-10-13 15:32:00,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:00,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350772623] [2020-10-13 15:32:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:32:01,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-13 15:32:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:32:01,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-13 15:32:01,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:01,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:01,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:01,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:01,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:01,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:01,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:01,289 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 15:32:01,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350772623] [2020-10-13 15:32:01,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:01,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:01,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839493468] [2020-10-13 15:32:01,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:01,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:01,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:01,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:01,292 INFO L87 Difference]: Start difference. First operand 149 states and 223 transitions. Second operand 5 states. [2020-10-13 15:32:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:01,933 INFO L93 Difference]: Finished difference Result 287 states and 430 transitions. [2020-10-13 15:32:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:01,934 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:32:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:01,938 INFO L225 Difference]: With dead ends: 287 [2020-10-13 15:32:01,938 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 15:32:01,939 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 15:32:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 15:32:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2020-10-13 15:32:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 222 transitions. [2020-10-13 15:32:01,958 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 222 transitions. Word has length 66 [2020-10-13 15:32:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:01,959 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 222 transitions. [2020-10-13 15:32:01,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 222 transitions. [2020-10-13 15:32:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:32:01,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:01,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:01,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:32:01,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:01,962 INFO L82 PathProgramCache]: Analyzing trace with hash 776263001, now seen corresponding path program 1 times [2020-10-13 15:32:01,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:01,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109353924] [2020-10-13 15:32:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:02,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:02,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:32:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4695 [2020-10-13 15:32:06,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:32:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:06,781 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 15:32:06,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109353924] [2020-10-13 15:32:06,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:06,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:06,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115966326] [2020-10-13 15:32:06,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:06,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:06,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:06,786 INFO L87 Difference]: Start difference. First operand 149 states and 222 transitions. Second operand 5 states. [2020-10-13 15:32:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:07,404 INFO L93 Difference]: Finished difference Result 286 states and 428 transitions. [2020-10-13 15:32:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:07,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:32:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:07,407 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:32:07,407 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:32:07,408 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 15:32:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:32:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2020-10-13 15:32:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 221 transitions. [2020-10-13 15:32:07,417 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 221 transitions. Word has length 67 [2020-10-13 15:32:07,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:07,418 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 221 transitions. [2020-10-13 15:32:07,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 221 transitions. [2020-10-13 15:32:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:32:07,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:07,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:07,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:32:07,422 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:07,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1349236755, now seen corresponding path program 1 times [2020-10-13 15:32:07,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:07,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229461243] [2020-10-13 15:32:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:07,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:08,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:32:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:32:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:32:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:12,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:12,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:12,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:12,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:32:12,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:12,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:12,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:12,549 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 15:32:12,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229461243] [2020-10-13 15:32:12,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:12,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:12,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536744677] [2020-10-13 15:32:12,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:12,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:12,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:12,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:12,552 INFO L87 Difference]: Start difference. First operand 149 states and 221 transitions. Second operand 5 states. [2020-10-13 15:32:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:13,199 INFO L93 Difference]: Finished difference Result 286 states and 427 transitions. [2020-10-13 15:32:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:13,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:32:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:13,201 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:32:13,201 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 15:32:13,202 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 15:32:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 15:32:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2020-10-13 15:32:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 15:32:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 220 transitions. [2020-10-13 15:32:13,213 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 220 transitions. Word has length 67 [2020-10-13 15:32:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:13,214 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 220 transitions. [2020-10-13 15:32:13,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 220 transitions. [2020-10-13 15:32:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:13,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:13,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:13,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:32:13,216 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1518776096, now seen corresponding path program 1 times [2020-10-13 15:32:13,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:13,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991188955] [2020-10-13 15:32:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:13,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:13,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:15,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:18,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:32:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:32:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:32:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:18,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:18,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:18,356 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 15:32:18,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991188955] [2020-10-13 15:32:18,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:18,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:32:18,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332672291] [2020-10-13 15:32:18,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:32:18,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:18,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:32:18,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:18,359 INFO L87 Difference]: Start difference. First operand 149 states and 220 transitions. Second operand 6 states. [2020-10-13 15:32:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:19,011 INFO L93 Difference]: Finished difference Result 283 states and 422 transitions. [2020-10-13 15:32:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:32:19,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 15:32:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:19,014 INFO L225 Difference]: With dead ends: 283 [2020-10-13 15:32:19,014 INFO L226 Difference]: Without dead ends: 159 [2020-10-13 15:32:19,015 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 15:32:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-13 15:32:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-13 15:32:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:32:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 231 transitions. [2020-10-13 15:32:19,022 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 231 transitions. Word has length 68 [2020-10-13 15:32:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:19,022 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 231 transitions. [2020-10-13 15:32:19,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:32:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 231 transitions. [2020-10-13 15:32:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:32:19,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:19,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:19,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:32:19,024 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:19,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1273846135, now seen corresponding path program 1 times [2020-10-13 15:32:19,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:19,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610176880] [2020-10-13 15:32:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4071 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:32:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:23,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:23,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:23,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:23,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:23,191 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 15:32:23,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610176880] [2020-10-13 15:32:23,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:23,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:23,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212252521] [2020-10-13 15:32:23,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:23,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:23,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:23,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:23,194 INFO L87 Difference]: Start difference. First operand 158 states and 231 transitions. Second operand 5 states. [2020-10-13 15:32:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:24,044 INFO L93 Difference]: Finished difference Result 304 states and 448 transitions. [2020-10-13 15:32:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:24,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 15:32:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:24,047 INFO L225 Difference]: With dead ends: 304 [2020-10-13 15:32:24,047 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 15:32:24,048 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 15:32:24,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 15:32:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-13 15:32:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 15:32:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2020-10-13 15:32:24,057 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 69 [2020-10-13 15:32:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:24,057 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2020-10-13 15:32:24,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2020-10-13 15:32:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:32:24,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:24,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:24,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:32:24,059 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1108542702, now seen corresponding path program 1 times [2020-10-13 15:32:24,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:24,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936789854] [2020-10-13 15:32:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:24,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:24,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:29,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:29,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:29,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:29,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:29,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:32:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:29,203 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 15:32:29,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936789854] [2020-10-13 15:32:29,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:29,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:32:29,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232890885] [2020-10-13 15:32:29,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:32:29,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:29,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:32:29,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:29,207 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand 6 states. [2020-10-13 15:32:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:30,226 INFO L93 Difference]: Finished difference Result 416 states and 620 transitions. [2020-10-13 15:32:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:32:30,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-13 15:32:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:30,230 INFO L225 Difference]: With dead ends: 416 [2020-10-13 15:32:30,230 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:32:30,231 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 15:32:30,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:32:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 174. [2020-10-13 15:32:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 15:32:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 256 transitions. [2020-10-13 15:32:30,238 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 256 transitions. Word has length 69 [2020-10-13 15:32:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:30,239 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 256 transitions. [2020-10-13 15:32:30,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:32:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 256 transitions. [2020-10-13 15:32:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:32:30,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:30,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:30,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:32:30,240 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:30,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:30,241 INFO L82 PathProgramCache]: Analyzing trace with hash 415305612, now seen corresponding path program 1 times [2020-10-13 15:32:30,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:30,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144502272] [2020-10-13 15:32:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:32:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-13 15:32:30,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:32:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:30,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:30,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:30,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:30,712 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 15:32:30,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144502272] [2020-10-13 15:32:30,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:30,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:30,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641926662] [2020-10-13 15:32:30,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:30,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:30,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:30,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:30,715 INFO L87 Difference]: Start difference. First operand 174 states and 256 transitions. Second operand 5 states. [2020-10-13 15:32:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:31,359 INFO L93 Difference]: Finished difference Result 366 states and 547 transitions. [2020-10-13 15:32:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:31,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 15:32:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:31,364 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:32:31,365 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 15:32:31,366 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 15:32:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 15:32:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2020-10-13 15:32:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2020-10-13 15:32:31,377 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 69 [2020-10-13 15:32:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:31,377 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2020-10-13 15:32:31,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2020-10-13 15:32:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 15:32:31,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:31,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:31,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:32:31,380 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:31,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:31,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1106179461, now seen corresponding path program 1 times [2020-10-13 15:32:31,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:31,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080601154] [2020-10-13 15:32:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 15:32:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-10-13 15:32:36,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:36,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:36,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:36,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:36,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:32:36,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:36,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:36,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:36,377 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 15:32:36,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080601154] [2020-10-13 15:32:36,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:36,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:36,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550651335] [2020-10-13 15:32:36,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:36,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:36,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:36,379 INFO L87 Difference]: Start difference. First operand 196 states and 294 transitions. Second operand 5 states. [2020-10-13 15:32:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:37,090 INFO L93 Difference]: Finished difference Result 380 states and 574 transitions. [2020-10-13 15:32:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:37,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-13 15:32:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:37,093 INFO L225 Difference]: With dead ends: 380 [2020-10-13 15:32:37,093 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:32:37,097 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 15:32:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:32:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2020-10-13 15:32:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 293 transitions. [2020-10-13 15:32:37,108 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 293 transitions. Word has length 70 [2020-10-13 15:32:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:37,109 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 293 transitions. [2020-10-13 15:32:37,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 293 transitions. [2020-10-13 15:32:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 15:32:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:37,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:37,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:32:37,111 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash -245637358, now seen corresponding path program 1 times [2020-10-13 15:32:37,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:37,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494353945] [2020-10-13 15:32:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:40,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 15:32:40,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3308 [2020-10-13 15:32:40,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:40,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:40,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:40,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:40,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:40,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:40,503 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 15:32:40,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494353945] [2020-10-13 15:32:40,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:40,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:40,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453494634] [2020-10-13 15:32:40,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:40,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:40,505 INFO L87 Difference]: Start difference. First operand 196 states and 293 transitions. Second operand 5 states. [2020-10-13 15:32:41,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:41,120 INFO L93 Difference]: Finished difference Result 370 states and 561 transitions. [2020-10-13 15:32:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:41,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-13 15:32:41,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:41,122 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:32:41,122 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:32:41,123 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 15:32:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:32:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2020-10-13 15:32:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 292 transitions. [2020-10-13 15:32:41,135 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 292 transitions. Word has length 71 [2020-10-13 15:32:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:41,136 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 292 transitions. [2020-10-13 15:32:41,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 292 transitions. [2020-10-13 15:32:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:32:41,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:41,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:41,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:32:41,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash 905193314, now seen corresponding path program 1 times [2020-10-13 15:32:41,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:41,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872453407] [2020-10-13 15:32:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:32:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,998 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 15:32:41,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872453407] [2020-10-13 15:32:41,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:41,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:41,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240495099] [2020-10-13 15:32:41,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:41,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:42,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:42,000 INFO L87 Difference]: Start difference. First operand 196 states and 292 transitions. Second operand 5 states. [2020-10-13 15:32:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:42,653 INFO L93 Difference]: Finished difference Result 388 states and 582 transitions. [2020-10-13 15:32:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:42,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:32:42,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:42,656 INFO L225 Difference]: With dead ends: 388 [2020-10-13 15:32:42,656 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 15:32:42,657 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 15:32:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 15:32:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 196. [2020-10-13 15:32:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 291 transitions. [2020-10-13 15:32:42,666 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 291 transitions. Word has length 82 [2020-10-13 15:32:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:42,668 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 291 transitions. [2020-10-13 15:32:42,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 291 transitions. [2020-10-13 15:32:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:32:42,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:42,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:42,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:32:42,672 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:42,672 INFO L82 PathProgramCache]: Analyzing trace with hash 706002431, now seen corresponding path program 1 times [2020-10-13 15:32:42,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:42,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695950315] [2020-10-13 15:32:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:42,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:42,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:43,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:43,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:43,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:43,444 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 15:32:43,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695950315] [2020-10-13 15:32:43,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:43,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:43,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798532545] [2020-10-13 15:32:43,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:43,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:43,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:43,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:43,446 INFO L87 Difference]: Start difference. First operand 196 states and 291 transitions. Second operand 5 states. [2020-10-13 15:32:44,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:44,008 INFO L93 Difference]: Finished difference Result 386 states and 578 transitions. [2020-10-13 15:32:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:44,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:32:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:44,010 INFO L225 Difference]: With dead ends: 386 [2020-10-13 15:32:44,011 INFO L226 Difference]: Without dead ends: 215 [2020-10-13 15:32:44,011 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 15:32:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-13 15:32:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 196. [2020-10-13 15:32:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 290 transitions. [2020-10-13 15:32:44,019 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 290 transitions. Word has length 83 [2020-10-13 15:32:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:44,020 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 290 transitions. [2020-10-13 15:32:44,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 290 transitions. [2020-10-13 15:32:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:32:44,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:44,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:44,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:32:44,022 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:44,022 INFO L82 PathProgramCache]: Analyzing trace with hash -757477990, now seen corresponding path program 1 times [2020-10-13 15:32:44,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:44,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392505432] [2020-10-13 15:32:44,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:32:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:44,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:44,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:44,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:44,514 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 15:32:44,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392505432] [2020-10-13 15:32:44,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:44,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:44,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651330393] [2020-10-13 15:32:44,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:44,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:44,516 INFO L87 Difference]: Start difference. First operand 196 states and 290 transitions. Second operand 5 states. [2020-10-13 15:32:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:45,097 INFO L93 Difference]: Finished difference Result 385 states and 575 transitions. [2020-10-13 15:32:45,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:45,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:32:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:45,099 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:32:45,099 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:32:45,100 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 15:32:45,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:32:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2020-10-13 15:32:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 289 transitions. [2020-10-13 15:32:45,108 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 289 transitions. Word has length 83 [2020-10-13 15:32:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:45,109 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 289 transitions. [2020-10-13 15:32:45,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 289 transitions. [2020-10-13 15:32:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:32:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:45,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:45,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:32:45,110 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:45,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2108289437, now seen corresponding path program 1 times [2020-10-13 15:32:45,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:45,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491450633] [2020-10-13 15:32:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:45,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:50,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:32:50,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:50,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:50,188 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 15:32:50,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491450633] [2020-10-13 15:32:50,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:50,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:50,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602366482] [2020-10-13 15:32:50,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:50,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:50,190 INFO L87 Difference]: Start difference. First operand 196 states and 289 transitions. Second operand 5 states. [2020-10-13 15:32:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:50,762 INFO L93 Difference]: Finished difference Result 384 states and 572 transitions. [2020-10-13 15:32:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:50,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:32:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:50,764 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:32:50,764 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:32:50,765 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 15:32:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:32:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:32:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 288 transitions. [2020-10-13 15:32:50,772 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 288 transitions. Word has length 85 [2020-10-13 15:32:50,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:50,772 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 288 transitions. [2020-10-13 15:32:50,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 288 transitions. [2020-10-13 15:32:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:32:50,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:50,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:50,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:32:50,774 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:50,775 INFO L82 PathProgramCache]: Analyzing trace with hash 720694863, now seen corresponding path program 1 times [2020-10-13 15:32:50,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:50,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233326928] [2020-10-13 15:32:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:32:55,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,856 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 15:32:55,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233326928] [2020-10-13 15:32:55,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:55,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:55,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689792151] [2020-10-13 15:32:55,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:55,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:55,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:55,858 INFO L87 Difference]: Start difference. First operand 196 states and 288 transitions. Second operand 5 states. [2020-10-13 15:32:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:56,432 INFO L93 Difference]: Finished difference Result 384 states and 570 transitions. [2020-10-13 15:32:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:56,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:32:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:56,434 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:32:56,434 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:32:56,435 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 15:32:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:32:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:32:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:32:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 287 transitions. [2020-10-13 15:32:56,442 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 287 transitions. Word has length 85 [2020-10-13 15:32:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:56,443 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 287 transitions. [2020-10-13 15:32:56,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 287 transitions. [2020-10-13 15:32:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:32:56,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:56,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:32:56,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:32:56,445 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1587476434, now seen corresponding path program 1 times [2020-10-13 15:32:56,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:56,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101007680] [2020-10-13 15:32:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:01,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:33:01,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:33:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:01,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:01,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:01,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:01,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:01,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:01,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:01,533 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 15:33:01,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101007680] [2020-10-13 15:33:01,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:01,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:01,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278150680] [2020-10-13 15:33:01,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:01,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:01,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:01,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:01,536 INFO L87 Difference]: Start difference. First operand 196 states and 287 transitions. Second operand 5 states. [2020-10-13 15:33:02,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:02,134 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2020-10-13 15:33:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:02,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:33:02,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:02,137 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:33:02,137 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:33:02,138 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 15:33:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:33:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:33:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:33:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 286 transitions. [2020-10-13 15:33:02,156 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 286 transitions. Word has length 86 [2020-10-13 15:33:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:02,156 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 286 transitions. [2020-10-13 15:33:02,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 286 transitions. [2020-10-13 15:33:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-13 15:33:02,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:02,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:02,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:33:02,158 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:02,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:02,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2056183158, now seen corresponding path program 1 times [2020-10-13 15:33:02,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:02,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817330728] [2020-10-13 15:33:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:07,245 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 15:33:07,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817330728] [2020-10-13 15:33:07,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:07,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:07,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726843846] [2020-10-13 15:33:07,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:07,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:07,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:07,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:07,247 INFO L87 Difference]: Start difference. First operand 196 states and 286 transitions. Second operand 5 states. [2020-10-13 15:33:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:07,832 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2020-10-13 15:33:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:07,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-13 15:33:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:07,834 INFO L225 Difference]: With dead ends: 384 [2020-10-13 15:33:07,834 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:33:07,835 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 15:33:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:33:07,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2020-10-13 15:33:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:33:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2020-10-13 15:33:07,842 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 87 [2020-10-13 15:33:07,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:07,842 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2020-10-13 15:33:07,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2020-10-13 15:33:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 15:33:07,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:07,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:07,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:33:07,844 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:07,845 INFO L82 PathProgramCache]: Analyzing trace with hash 505369261, now seen corresponding path program 1 times [2020-10-13 15:33:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:07,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182551033] [2020-10-13 15:33:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:33:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:12,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:12,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:12,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:12,920 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 15:33:12,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182551033] [2020-10-13 15:33:12,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:12,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:12,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108401351] [2020-10-13 15:33:12,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:12,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:12,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:12,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:12,923 INFO L87 Difference]: Start difference. First operand 196 states and 285 transitions. Second operand 5 states. [2020-10-13 15:33:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:13,501 INFO L93 Difference]: Finished difference Result 374 states and 552 transitions. [2020-10-13 15:33:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:13,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 15:33:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:13,504 INFO L225 Difference]: With dead ends: 374 [2020-10-13 15:33:13,504 INFO L226 Difference]: Without dead ends: 203 [2020-10-13 15:33:13,505 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 15:33:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-13 15:33:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2020-10-13 15:33:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 15:33:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 284 transitions. [2020-10-13 15:33:13,519 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 284 transitions. Word has length 88 [2020-10-13 15:33:13,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:13,519 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 284 transitions. [2020-10-13 15:33:13,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 284 transitions. [2020-10-13 15:33:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 15:33:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:13,522 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, 1, 1, 1, 1] [2020-10-13 15:33:13,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:33:13,522 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1918634743, now seen corresponding path program 1 times [2020-10-13 15:33:13,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:13,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818554148] [2020-10-13 15:33:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:13,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:14,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 15:33:14,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-13 15:33:14,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:33:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 15:33:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:14,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:33:14,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818554148] [2020-10-13 15:33:14,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:14,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:33:14,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453900614] [2020-10-13 15:33:14,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:33:14,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:14,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:33:14,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:33:14,412 INFO L87 Difference]: Start difference. First operand 196 states and 284 transitions. Second operand 4 states. [2020-10-13 15:33:14,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:14,864 INFO L93 Difference]: Finished difference Result 394 states and 577 transitions. [2020-10-13 15:33:14,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:33:14,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-13 15:33:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:14,870 INFO L225 Difference]: With dead ends: 394 [2020-10-13 15:33:14,870 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 15:33:14,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:33:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 15:33:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-10-13 15:33:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-13 15:33:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 319 transitions. [2020-10-13 15:33:14,887 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 319 transitions. Word has length 91 [2020-10-13 15:33:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:14,888 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 319 transitions. [2020-10-13 15:33:14,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:33:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 319 transitions. [2020-10-13 15:33:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 15:33:14,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:14,892 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, 1, 1, 1, 1] [2020-10-13 15:33:14,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:33:14,892 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash 448059851, now seen corresponding path program 1 times [2020-10-13 15:33:14,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:14,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746825171] [2020-10-13 15:33:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:15,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 15:33:15,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:15,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-13 15:33:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:33:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:15,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:15,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:15,319 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 15:33:15,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746825171] [2020-10-13 15:33:15,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:15,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:15,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245593805] [2020-10-13 15:33:15,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:15,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:15,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:15,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:15,321 INFO L87 Difference]: Start difference. First operand 223 states and 319 transitions. Second operand 5 states. [2020-10-13 15:33:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:16,140 INFO L93 Difference]: Finished difference Result 519 states and 760 transitions. [2020-10-13 15:33:16,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:16,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 15:33:16,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:16,149 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:33:16,149 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:33:16,150 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 15:33:16,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:33:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 266. [2020-10-13 15:33:16,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-13 15:33:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 397 transitions. [2020-10-13 15:33:16,162 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 397 transitions. Word has length 91 [2020-10-13 15:33:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:16,163 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 397 transitions. [2020-10-13 15:33:16,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 397 transitions. [2020-10-13 15:33:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 15:33:16,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:16,165 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, 1, 1, 1, 1] [2020-10-13 15:33:16,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:33:16,165 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1601327991, now seen corresponding path program 1 times [2020-10-13 15:33:16,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:16,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084642929] [2020-10-13 15:33:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:16,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:16,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:16,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,665 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 15:33:16,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084642929] [2020-10-13 15:33:16,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:16,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:16,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648256321] [2020-10-13 15:33:16,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:16,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:16,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:16,668 INFO L87 Difference]: Start difference. First operand 266 states and 397 transitions. Second operand 5 states. [2020-10-13 15:33:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:17,421 INFO L93 Difference]: Finished difference Result 557 states and 841 transitions. [2020-10-13 15:33:17,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:17,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 15:33:17,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:17,423 INFO L225 Difference]: With dead ends: 557 [2020-10-13 15:33:17,423 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 15:33:17,424 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 15:33:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 15:33:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2020-10-13 15:33:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 439 transitions. [2020-10-13 15:33:17,447 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 439 transitions. Word has length 91 [2020-10-13 15:33:17,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:17,448 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 439 transitions. [2020-10-13 15:33:17,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 439 transitions. [2020-10-13 15:33:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:17,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:17,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:17,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:33:17,454 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:17,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:17,454 INFO L82 PathProgramCache]: Analyzing trace with hash -846382205, now seen corresponding path program 1 times [2020-10-13 15:33:17,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:17,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939868482] [2020-10-13 15:33:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:18,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:18,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:18,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:18,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:18,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:18,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:18,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:18,926 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 15:33:18,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939868482] [2020-10-13 15:33:18,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:18,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:18,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352616244] [2020-10-13 15:33:18,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:18,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:18,928 INFO L87 Difference]: Start difference. First operand 290 states and 439 transitions. Second operand 5 states. [2020-10-13 15:33:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:19,692 INFO L93 Difference]: Finished difference Result 610 states and 921 transitions. [2020-10-13 15:33:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:19,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:19,695 INFO L225 Difference]: With dead ends: 610 [2020-10-13 15:33:19,696 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:33:19,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:33:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:33:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 290. [2020-10-13 15:33:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 438 transitions. [2020-10-13 15:33:19,716 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 438 transitions. Word has length 104 [2020-10-13 15:33:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:19,717 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 438 transitions. [2020-10-13 15:33:19,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 438 transitions. [2020-10-13 15:33:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:19,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:19,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:19,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:33:19,719 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:19,720 INFO L82 PathProgramCache]: Analyzing trace with hash 414535045, now seen corresponding path program 1 times [2020-10-13 15:33:19,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:19,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194509973] [2020-10-13 15:33:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:21,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:21,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-13 15:33:21,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:21,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:21,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:21,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:21,110 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 15:33:21,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194509973] [2020-10-13 15:33:21,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:21,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:21,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319969083] [2020-10-13 15:33:21,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:21,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:21,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:21,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:21,112 INFO L87 Difference]: Start difference. First operand 290 states and 438 transitions. Second operand 5 states. [2020-10-13 15:33:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:21,804 INFO L93 Difference]: Finished difference Result 581 states and 880 transitions. [2020-10-13 15:33:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:21,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:21,807 INFO L225 Difference]: With dead ends: 581 [2020-10-13 15:33:21,807 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 15:33:21,808 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 15:33:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 15:33:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 290. [2020-10-13 15:33:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:21,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 437 transitions. [2020-10-13 15:33:21,817 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 437 transitions. Word has length 104 [2020-10-13 15:33:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:21,817 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 437 transitions. [2020-10-13 15:33:21,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 437 transitions. [2020-10-13 15:33:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:21,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:21,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:21,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:33:21,820 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:21,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:21,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2053231106, now seen corresponding path program 1 times [2020-10-13 15:33:21,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:21,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034585917] [2020-10-13 15:33:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:23,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:23,303 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 15:33:23,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034585917] [2020-10-13 15:33:23,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:23,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:23,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490075148] [2020-10-13 15:33:23,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:23,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:23,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:23,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:23,305 INFO L87 Difference]: Start difference. First operand 290 states and 437 transitions. Second operand 5 states. [2020-10-13 15:33:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:24,040 INFO L93 Difference]: Finished difference Result 608 states and 915 transitions. [2020-10-13 15:33:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:24,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:24,044 INFO L225 Difference]: With dead ends: 608 [2020-10-13 15:33:24,044 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 15:33:24,045 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 15:33:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 15:33:24,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 290. [2020-10-13 15:33:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 436 transitions. [2020-10-13 15:33:24,055 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 436 transitions. Word has length 105 [2020-10-13 15:33:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:24,055 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 436 transitions. [2020-10-13 15:33:24,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 436 transitions. [2020-10-13 15:33:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:24,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:24,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:24,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:33:24,058 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash 778255769, now seen corresponding path program 1 times [2020-10-13 15:33:24,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:24,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540847410] [2020-10-13 15:33:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-13 15:33:24,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:24,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:24,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:24,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:24,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:24,716 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 15:33:24,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540847410] [2020-10-13 15:33:24,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:24,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:24,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216375993] [2020-10-13 15:33:24,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:24,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:24,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:24,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:24,718 INFO L87 Difference]: Start difference. First operand 290 states and 436 transitions. Second operand 5 states. [2020-10-13 15:33:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:25,449 INFO L93 Difference]: Finished difference Result 607 states and 912 transitions. [2020-10-13 15:33:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:25,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:25,452 INFO L225 Difference]: With dead ends: 607 [2020-10-13 15:33:25,453 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 15:33:25,454 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 15:33:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 15:33:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 290. [2020-10-13 15:33:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 435 transitions. [2020-10-13 15:33:25,463 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 435 transitions. Word has length 105 [2020-10-13 15:33:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:25,464 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 435 transitions. [2020-10-13 15:33:25,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:25,464 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 435 transitions. [2020-10-13 15:33:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:25,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:25,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:25,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:33:25,466 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:25,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:25,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1619502020, now seen corresponding path program 1 times [2020-10-13 15:33:25,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:25,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902802323] [2020-10-13 15:33:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:26,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:26,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:26,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:26,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:26,983 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 15:33:26,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902802323] [2020-10-13 15:33:26,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:26,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:26,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059877785] [2020-10-13 15:33:26,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:26,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:26,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:26,986 INFO L87 Difference]: Start difference. First operand 290 states and 435 transitions. Second operand 5 states. [2020-10-13 15:33:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:27,684 INFO L93 Difference]: Finished difference Result 579 states and 872 transitions. [2020-10-13 15:33:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:27,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:27,688 INFO L225 Difference]: With dead ends: 579 [2020-10-13 15:33:27,688 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 15:33:27,689 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 15:33:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 15:33:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 290. [2020-10-13 15:33:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 434 transitions. [2020-10-13 15:33:27,698 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 434 transitions. Word has length 105 [2020-10-13 15:33:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:27,698 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 434 transitions. [2020-10-13 15:33:27,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 434 transitions. [2020-10-13 15:33:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:27,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:27,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:27,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:33:27,700 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:27,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1211984855, now seen corresponding path program 1 times [2020-10-13 15:33:27,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:27,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683467370] [2020-10-13 15:33:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:28,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:28,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:28,348 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 15:33:28,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683467370] [2020-10-13 15:33:28,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:28,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:28,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894251226] [2020-10-13 15:33:28,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:28,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:28,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:28,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:28,350 INFO L87 Difference]: Start difference. First operand 290 states and 434 transitions. Second operand 5 states. [2020-10-13 15:33:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:29,030 INFO L93 Difference]: Finished difference Result 578 states and 869 transitions. [2020-10-13 15:33:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:29,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:29,033 INFO L225 Difference]: With dead ends: 578 [2020-10-13 15:33:29,033 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 15:33:29,034 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 15:33:29,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 15:33:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 290. [2020-10-13 15:33:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 433 transitions. [2020-10-13 15:33:29,043 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 433 transitions. Word has length 105 [2020-10-13 15:33:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:29,044 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 433 transitions. [2020-10-13 15:33:29,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 433 transitions. [2020-10-13 15:33:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:29,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:29,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:29,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:33:29,046 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:29,046 INFO L82 PathProgramCache]: Analyzing trace with hash 558070434, now seen corresponding path program 1 times [2020-10-13 15:33:29,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:29,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274265196] [2020-10-13 15:33:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:34,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:34,149 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 15:33:34,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274265196] [2020-10-13 15:33:34,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:34,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:34,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569162620] [2020-10-13 15:33:34,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:34,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:34,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:34,151 INFO L87 Difference]: Start difference. First operand 290 states and 433 transitions. Second operand 5 states. [2020-10-13 15:33:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:34,893 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2020-10-13 15:33:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:34,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:34,897 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:34,897 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:34,898 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 15:33:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 432 transitions. [2020-10-13 15:33:34,907 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 432 transitions. Word has length 107 [2020-10-13 15:33:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:34,908 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 432 transitions. [2020-10-13 15:33:34,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 432 transitions. [2020-10-13 15:33:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:34,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:34,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:34,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:33:34,910 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash -907912562, now seen corresponding path program 1 times [2020-10-13 15:33:34,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:34,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922740450] [2020-10-13 15:33:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:39,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:39,996 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 15:33:39,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922740450] [2020-10-13 15:33:39,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:39,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:39,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875353329] [2020-10-13 15:33:39,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:39,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:39,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:39,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:39,999 INFO L87 Difference]: Start difference. First operand 290 states and 432 transitions. Second operand 5 states. [2020-10-13 15:33:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:40,771 INFO L93 Difference]: Finished difference Result 606 states and 903 transitions. [2020-10-13 15:33:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:40,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:40,774 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:40,774 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:40,775 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 15:33:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 431 transitions. [2020-10-13 15:33:40,785 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 431 transitions. Word has length 107 [2020-10-13 15:33:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:40,785 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 431 transitions. [2020-10-13 15:33:40,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 431 transitions. [2020-10-13 15:33:40,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:40,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:40,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:40,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:33:40,787 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:40,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:40,788 INFO L82 PathProgramCache]: Analyzing trace with hash 759894368, now seen corresponding path program 1 times [2020-10-13 15:33:40,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:40,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768571852] [2020-10-13 15:33:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:40,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:45,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:45,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:45,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:45,877 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 15:33:45,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768571852] [2020-10-13 15:33:45,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:45,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:45,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868303323] [2020-10-13 15:33:45,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:45,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:45,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:45,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:45,879 INFO L87 Difference]: Start difference. First operand 290 states and 431 transitions. Second operand 5 states. [2020-10-13 15:33:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:46,559 INFO L93 Difference]: Finished difference Result 577 states and 862 transitions. [2020-10-13 15:33:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:46,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:46,563 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:33:46,563 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:46,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:33:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:33:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 430 transitions. [2020-10-13 15:33:46,573 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 430 transitions. Word has length 107 [2020-10-13 15:33:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 430 transitions. [2020-10-13 15:33:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 430 transitions. [2020-10-13 15:33:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:33:46,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:46,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:46,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:33:46,576 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:46,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash -706088628, now seen corresponding path program 1 times [2020-10-13 15:33:46,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:46,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603284997] [2020-10-13 15:33:46,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:51,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:33:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:33:51,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:51,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:51,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:51,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:51,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:51,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:51,672 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 15:33:51,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603284997] [2020-10-13 15:33:51,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:51,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:51,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971877529] [2020-10-13 15:33:51,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:51,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:51,675 INFO L87 Difference]: Start difference. First operand 290 states and 430 transitions. Second operand 5 states. [2020-10-13 15:33:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:52,335 INFO L93 Difference]: Finished difference Result 577 states and 860 transitions. [2020-10-13 15:33:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:52,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:33:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:52,338 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:33:52,338 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:52,339 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 15:33:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:33:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 429 transitions. [2020-10-13 15:33:52,349 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 429 transitions. Word has length 107 [2020-10-13 15:33:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:52,349 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 429 transitions. [2020-10-13 15:33:52,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 429 transitions. [2020-10-13 15:33:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:33:52,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:52,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:52,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:33:52,352 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:52,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1654713485, now seen corresponding path program 1 times [2020-10-13 15:33:52,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:52,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418550441] [2020-10-13 15:33:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:57,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:57,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:57,447 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 15:33:57,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418550441] [2020-10-13 15:33:57,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:57,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:57,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002720591] [2020-10-13 15:33:57,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:57,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:57,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:57,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:57,449 INFO L87 Difference]: Start difference. First operand 290 states and 429 transitions. Second operand 5 states. [2020-10-13 15:33:58,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:58,235 INFO L93 Difference]: Finished difference Result 606 states and 897 transitions. [2020-10-13 15:33:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:58,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:33:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:58,240 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:33:58,240 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:33:58,241 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 15:33:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:33:58,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:33:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:33:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 428 transitions. [2020-10-13 15:33:58,250 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 428 transitions. Word has length 108 [2020-10-13 15:33:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:58,250 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 428 transitions. [2020-10-13 15:33:58,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 428 transitions. [2020-10-13 15:33:58,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:33:58,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:58,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:33:58,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:33:58,252 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:58,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:58,252 INFO L82 PathProgramCache]: Analyzing trace with hash 306861173, now seen corresponding path program 1 times [2020-10-13 15:33:58,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:58,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644742399] [2020-10-13 15:33:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:58,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:03,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:34:03,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:34:03,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:03,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:03,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:03,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:03,363 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 15:34:03,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644742399] [2020-10-13 15:34:03,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:03,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:03,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360080138] [2020-10-13 15:34:03,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:03,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:03,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:03,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:03,365 INFO L87 Difference]: Start difference. First operand 290 states and 428 transitions. Second operand 5 states. [2020-10-13 15:34:04,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:04,062 INFO L93 Difference]: Finished difference Result 577 states and 856 transitions. [2020-10-13 15:34:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:04,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:34:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:04,065 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:34:04,066 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:34:04,067 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 15:34:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:34:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:34:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 427 transitions. [2020-10-13 15:34:04,076 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 427 transitions. Word has length 108 [2020-10-13 15:34:04,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:04,077 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 427 transitions. [2020-10-13 15:34:04,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 427 transitions. [2020-10-13 15:34:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:34:04,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:04,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:04,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:34:04,079 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:04,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:04,079 INFO L82 PathProgramCache]: Analyzing trace with hash 515144457, now seen corresponding path program 1 times [2020-10-13 15:34:04,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:04,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959724621] [2020-10-13 15:34:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:09,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:09,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:09,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:09,177 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 15:34:09,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959724621] [2020-10-13 15:34:09,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:09,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:09,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384984155] [2020-10-13 15:34:09,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:09,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:09,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:09,179 INFO L87 Difference]: Start difference. First operand 290 states and 427 transitions. Second operand 5 states. [2020-10-13 15:34:09,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:09,951 INFO L93 Difference]: Finished difference Result 606 states and 893 transitions. [2020-10-13 15:34:09,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:09,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:34:09,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:09,954 INFO L225 Difference]: With dead ends: 606 [2020-10-13 15:34:09,955 INFO L226 Difference]: Without dead ends: 341 [2020-10-13 15:34:09,955 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 15:34:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-13 15:34:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 290. [2020-10-13 15:34:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 426 transitions. [2020-10-13 15:34:09,964 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 426 transitions. Word has length 109 [2020-10-13 15:34:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:09,964 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 426 transitions. [2020-10-13 15:34:09,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 426 transitions. [2020-10-13 15:34:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 15:34:09,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:09,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:09,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:34:09,967 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:09,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1194416711, now seen corresponding path program 1 times [2020-10-13 15:34:09,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:09,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324723297] [2020-10-13 15:34:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:14,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 15:34:14,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:14,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:15,064 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 15:34:15,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324723297] [2020-10-13 15:34:15,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:15,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:15,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964254494] [2020-10-13 15:34:15,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:15,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:15,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:15,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:15,066 INFO L87 Difference]: Start difference. First operand 290 states and 426 transitions. Second operand 5 states. [2020-10-13 15:34:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:15,752 INFO L93 Difference]: Finished difference Result 577 states and 852 transitions. [2020-10-13 15:34:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:15,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-13 15:34:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:15,755 INFO L225 Difference]: With dead ends: 577 [2020-10-13 15:34:15,755 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:34:15,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:34:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2020-10-13 15:34:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 425 transitions. [2020-10-13 15:34:15,765 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 425 transitions. Word has length 109 [2020-10-13 15:34:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:15,765 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 425 transitions. [2020-10-13 15:34:15,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 425 transitions. [2020-10-13 15:34:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:34:15,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:15,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:15,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:34:15,767 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1387853298, now seen corresponding path program 1 times [2020-10-13 15:34:15,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:15,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386331777] [2020-10-13 15:34:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:20,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:20,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:20,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:20,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:20,876 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 15:34:20,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386331777] [2020-10-13 15:34:20,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:20,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:20,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644129962] [2020-10-13 15:34:20,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:20,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:20,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:20,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:20,878 INFO L87 Difference]: Start difference. First operand 290 states and 425 transitions. Second operand 5 states. [2020-10-13 15:34:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:21,625 INFO L93 Difference]: Finished difference Result 596 states and 877 transitions. [2020-10-13 15:34:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:21,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:34:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:21,628 INFO L225 Difference]: With dead ends: 596 [2020-10-13 15:34:21,628 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 15:34:21,629 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 15:34:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 15:34:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 290. [2020-10-13 15:34:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:21,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 424 transitions. [2020-10-13 15:34:21,637 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 424 transitions. Word has length 110 [2020-10-13 15:34:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:21,638 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 424 transitions. [2020-10-13 15:34:21,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:21,638 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 424 transitions. [2020-10-13 15:34:21,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 15:34:21,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:21,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:21,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:34:21,639 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1805249904, now seen corresponding path program 1 times [2020-10-13 15:34:21,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:21,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655510761] [2020-10-13 15:34:21,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:22,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:26,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:26,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:26,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:26,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:26,742 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 15:34:26,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655510761] [2020-10-13 15:34:26,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:26,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:26,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533287975] [2020-10-13 15:34:26,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:26,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:26,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:26,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:26,744 INFO L87 Difference]: Start difference. First operand 290 states and 424 transitions. Second operand 5 states. [2020-10-13 15:34:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:27,370 INFO L93 Difference]: Finished difference Result 567 states and 836 transitions. [2020-10-13 15:34:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:27,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-13 15:34:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:27,372 INFO L225 Difference]: With dead ends: 567 [2020-10-13 15:34:27,372 INFO L226 Difference]: Without dead ends: 302 [2020-10-13 15:34:27,373 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 15:34:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-13 15:34:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2020-10-13 15:34:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 423 transitions. [2020-10-13 15:34:27,382 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 423 transitions. Word has length 110 [2020-10-13 15:34:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:27,382 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 423 transitions. [2020-10-13 15:34:27,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:27,382 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 423 transitions. [2020-10-13 15:34:27,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:34:27,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:27,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:27,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:34:27,384 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash -593844682, now seen corresponding path program 1 times [2020-10-13 15:34:27,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:27,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513393616] [2020-10-13 15:34:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:27,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1402 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:34:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:28,893 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 15:34:28,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513393616] [2020-10-13 15:34:28,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:28,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:28,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060457977] [2020-10-13 15:34:28,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:28,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:28,895 INFO L87 Difference]: Start difference. First operand 290 states and 423 transitions. Second operand 5 states. [2020-10-13 15:34:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:29,689 INFO L93 Difference]: Finished difference Result 596 states and 873 transitions. [2020-10-13 15:34:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:29,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:34:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:29,693 INFO L225 Difference]: With dead ends: 596 [2020-10-13 15:34:29,693 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 15:34:29,694 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 15:34:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 15:34:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 290. [2020-10-13 15:34:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-13 15:34:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2020-10-13 15:34:29,702 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 113 [2020-10-13 15:34:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:29,703 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2020-10-13 15:34:29,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2020-10-13 15:34:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-13 15:34:29,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:29,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:29,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:34:29,705 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:29,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1325812108, now seen corresponding path program 1 times [2020-10-13 15:34:29,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:29,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044699087] [2020-10-13 15:34:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:29,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:30,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:34:30,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:34:30,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,174 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 15:34:30,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044699087] [2020-10-13 15:34:30,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:30,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:30,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223003489] [2020-10-13 15:34:30,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:30,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:30,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:30,176 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand 5 states. [2020-10-13 15:34:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:30,841 INFO L93 Difference]: Finished difference Result 609 states and 898 transitions. [2020-10-13 15:34:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:30,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-13 15:34:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:30,844 INFO L225 Difference]: With dead ends: 609 [2020-10-13 15:34:30,845 INFO L226 Difference]: Without dead ends: 344 [2020-10-13 15:34:30,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-13 15:34:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 316. [2020-10-13 15:34:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 468 transitions. [2020-10-13 15:34:30,855 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 468 transitions. Word has length 113 [2020-10-13 15:34:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:30,856 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 468 transitions. [2020-10-13 15:34:30,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 468 transitions. [2020-10-13 15:34:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:34:30,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:30,857 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:30,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:34:30,857 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash -716644800, now seen corresponding path program 1 times [2020-10-13 15:34:30,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:30,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858744614] [2020-10-13 15:34:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:34:32,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-13 15:34:32,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:32,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:34:32,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:32,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:32,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:32,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:32,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:32,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:32,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:32,261 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 15:34:32,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858744614] [2020-10-13 15:34:32,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:32,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:32,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399406025] [2020-10-13 15:34:32,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:32,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:32,262 INFO L87 Difference]: Start difference. First operand 316 states and 468 transitions. Second operand 5 states. [2020-10-13 15:34:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:33,024 INFO L93 Difference]: Finished difference Result 648 states and 963 transitions. [2020-10-13 15:34:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:33,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:34:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:33,026 INFO L225 Difference]: With dead ends: 648 [2020-10-13 15:34:33,026 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:34:33,027 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 15:34:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:34:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 316. [2020-10-13 15:34:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 15:34:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 467 transitions. [2020-10-13 15:34:33,035 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 467 transitions. Word has length 116 [2020-10-13 15:34:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:33,036 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 467 transitions. [2020-10-13 15:34:33,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 467 transitions. [2020-10-13 15:34:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:34:33,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:33,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:33,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:34:33,037 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:33,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:33,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2120516613, now seen corresponding path program 1 times [2020-10-13 15:34:33,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:33,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012504617] [2020-10-13 15:34:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:33,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:33,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1388 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:34:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:34,519 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 15:34:34,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012504617] [2020-10-13 15:34:34,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:34,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:34,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417686970] [2020-10-13 15:34:34,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:34,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:34,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:34,521 INFO L87 Difference]: Start difference. First operand 316 states and 467 transitions. Second operand 5 states. [2020-10-13 15:34:35,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:35,337 INFO L93 Difference]: Finished difference Result 675 states and 1011 transitions. [2020-10-13 15:34:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:35,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:34:35,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:35,344 INFO L225 Difference]: With dead ends: 675 [2020-10-13 15:34:35,344 INFO L226 Difference]: Without dead ends: 384 [2020-10-13 15:34:35,345 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 15:34:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-13 15:34:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 346. [2020-10-13 15:34:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-13 15:34:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 521 transitions. [2020-10-13 15:34:35,354 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 521 transitions. Word has length 117 [2020-10-13 15:34:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:35,354 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 521 transitions. [2020-10-13 15:34:35,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 521 transitions. [2020-10-13 15:34:35,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:34:35,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:35,356 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, 1, 1, 1, 1, 1] [2020-10-13 15:34:35,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:34:35,356 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:35,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:35,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1087366566, now seen corresponding path program 1 times [2020-10-13 15:34:35,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:35,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693190610] [2020-10-13 15:34:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:34:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,872 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 15:34:36,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693190610] [2020-10-13 15:34:36,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:36,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:36,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803113315] [2020-10-13 15:34:36,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:36,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:36,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:36,875 INFO L87 Difference]: Start difference. First operand 346 states and 521 transitions. Second operand 5 states. [2020-10-13 15:34:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:37,631 INFO L93 Difference]: Finished difference Result 708 states and 1069 transitions. [2020-10-13 15:34:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:37,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:34:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:37,634 INFO L225 Difference]: With dead ends: 708 [2020-10-13 15:34:37,634 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 15:34:37,635 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 15:34:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 15:34:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 346. [2020-10-13 15:34:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-13 15:34:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 520 transitions. [2020-10-13 15:34:37,644 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 520 transitions. Word has length 118 [2020-10-13 15:34:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:37,644 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 520 transitions. [2020-10-13 15:34:37,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 520 transitions. [2020-10-13 15:34:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:34:37,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:37,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:37,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:34:37,646 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:37,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1176079137, now seen corresponding path program 1 times [2020-10-13 15:34:37,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:37,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638649427] [2020-10-13 15:34:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1585 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:34:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:39,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:39,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:39,320 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 15:34:39,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638649427] [2020-10-13 15:34:39,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:39,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:39,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849283539] [2020-10-13 15:34:39,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:39,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:39,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:39,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:39,322 INFO L87 Difference]: Start difference. First operand 346 states and 520 transitions. Second operand 5 states. [2020-10-13 15:34:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:40,096 INFO L93 Difference]: Finished difference Result 708 states and 1067 transitions. [2020-10-13 15:34:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:40,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:34:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:40,100 INFO L225 Difference]: With dead ends: 708 [2020-10-13 15:34:40,100 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 15:34:40,101 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 15:34:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 15:34:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 346. [2020-10-13 15:34:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-13 15:34:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 519 transitions. [2020-10-13 15:34:40,109 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 519 transitions. Word has length 119 [2020-10-13 15:34:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:40,109 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 519 transitions. [2020-10-13 15:34:40,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 519 transitions. [2020-10-13 15:34:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:34:40,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:40,111 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, 1, 1, 1, 1, 1] [2020-10-13 15:34:40,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:34:40,111 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash -949251775, now seen corresponding path program 1 times [2020-10-13 15:34:40,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:40,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191071374] [2020-10-13 15:34:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:34:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:41,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:41,522 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 15:34:41,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191071374] [2020-10-13 15:34:41,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:41,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:41,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037480016] [2020-10-13 15:34:41,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:41,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:41,523 INFO L87 Difference]: Start difference. First operand 346 states and 519 transitions. Second operand 5 states. [2020-10-13 15:34:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:42,252 INFO L93 Difference]: Finished difference Result 706 states and 1063 transitions. [2020-10-13 15:34:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:42,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:34:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:42,255 INFO L225 Difference]: With dead ends: 706 [2020-10-13 15:34:42,255 INFO L226 Difference]: Without dead ends: 385 [2020-10-13 15:34:42,256 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 15:34:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-13 15:34:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 346. [2020-10-13 15:34:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-13 15:34:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 518 transitions. [2020-10-13 15:34:42,263 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 518 transitions. Word has length 119 [2020-10-13 15:34:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:42,264 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 518 transitions. [2020-10-13 15:34:42,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 518 transitions. [2020-10-13 15:34:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 15:34:42,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:42,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:42,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:34:42,266 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1986681818, now seen corresponding path program 1 times [2020-10-13 15:34:42,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:42,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703483246] [2020-10-13 15:34:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:43,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 15:34:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-10-13 15:34:43,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 15:34:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:34:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:43,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:34:43,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703483246] [2020-10-13 15:34:43,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:43,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:43,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481668055] [2020-10-13 15:34:43,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:43,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:43,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:43,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:43,915 INFO L87 Difference]: Start difference. First operand 346 states and 518 transitions. Second operand 5 states. [2020-10-13 15:34:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:44,676 INFO L93 Difference]: Finished difference Result 731 states and 1107 transitions. [2020-10-13 15:34:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:44,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-13 15:34:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:44,679 INFO L225 Difference]: With dead ends: 731 [2020-10-13 15:34:44,679 INFO L226 Difference]: Without dead ends: 410 [2020-10-13 15:34:44,680 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 15:34:44,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-13 15:34:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 374. [2020-10-13 15:34:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-13 15:34:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 568 transitions. [2020-10-13 15:34:44,689 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 568 transitions. Word has length 120 [2020-10-13 15:34:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:44,690 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 568 transitions. [2020-10-13 15:34:44,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 568 transitions. [2020-10-13 15:34:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:34:44,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:44,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:34:44,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:34:44,692 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1079774289, now seen corresponding path program 1 times [2020-10-13 15:34:44,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351847] [2020-10-13 15:34:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:45,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:34:45,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:34:45,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-13 15:34:45,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:34:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:45,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:45,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351847] [2020-10-13 15:34:45,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:45,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:45,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119232311] [2020-10-13 15:34:45,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:45,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:45,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:45,125 INFO L87 Difference]: Start difference. First operand 374 states and 568 transitions. Second operand 5 states. [2020-10-13 15:34:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:45,878 INFO L93 Difference]: Finished difference Result 758 states and 1156 transitions. [2020-10-13 15:34:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:45,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:34:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:45,880 INFO L225 Difference]: With dead ends: 758 [2020-10-13 15:34:45,880 INFO L226 Difference]: Without dead ends: 409 [2020-10-13 15:34:45,881 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 15:34:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-13 15:34:45,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 374. [2020-10-13 15:34:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-13 15:34:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 567 transitions. [2020-10-13 15:34:45,890 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 567 transitions. Word has length 121 [2020-10-13 15:34:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 567 transitions. [2020-10-13 15:34:45,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 567 transitions. [2020-10-13 15:34:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:34:45,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:45,892 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:45,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:34:45,893 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:45,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:45,893 INFO L82 PathProgramCache]: Analyzing trace with hash -249380888, now seen corresponding path program 1 times [2020-10-13 15:34:45,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:45,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958562845] [2020-10-13 15:34:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4137 [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:50,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:34:50,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:34:50,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958562845] [2020-10-13 15:34:50,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:50,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:50,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890762907] [2020-10-13 15:34:50,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:50,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:50,125 INFO L87 Difference]: Start difference. First operand 374 states and 567 transitions. Second operand 5 states. [2020-10-13 15:34:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:50,829 INFO L93 Difference]: Finished difference Result 750 states and 1141 transitions. [2020-10-13 15:34:50,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:50,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:34:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:50,834 INFO L225 Difference]: With dead ends: 750 [2020-10-13 15:34:50,834 INFO L226 Difference]: Without dead ends: 401 [2020-10-13 15:34:50,835 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 15:34:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-13 15:34:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 374. [2020-10-13 15:34:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-10-13 15:34:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 566 transitions. [2020-10-13 15:34:50,841 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 566 transitions. Word has length 122 [2020-10-13 15:34:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:50,842 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 566 transitions. [2020-10-13 15:34:50,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 566 transitions. [2020-10-13 15:34:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:34:50,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:50,843 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, 1, 1, 1, 1] [2020-10-13 15:34:50,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:34:50,844 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:50,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1804340355, now seen corresponding path program 1 times [2020-10-13 15:34:50,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:50,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824862107] [2020-10-13 15:34:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:34:52,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:34:52,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824862107] [2020-10-13 15:34:52,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:52,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:52,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665181854] [2020-10-13 15:34:52,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:52,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:52,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:52,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:52,174 INFO L87 Difference]: Start difference. First operand 374 states and 566 transitions. Second operand 5 states. [2020-10-13 15:34:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:52,812 INFO L93 Difference]: Finished difference Result 762 states and 1162 transitions. [2020-10-13 15:34:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:52,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:34:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:52,815 INFO L225 Difference]: With dead ends: 762 [2020-10-13 15:34:52,815 INFO L226 Difference]: Without dead ends: 413 [2020-10-13 15:34:52,816 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 15:34:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-13 15:34:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 395. [2020-10-13 15:34:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-13 15:34:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 602 transitions. [2020-10-13 15:34:52,825 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 602 transitions. Word has length 122 [2020-10-13 15:34:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:52,825 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 602 transitions. [2020-10-13 15:34:52,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 602 transitions. [2020-10-13 15:34:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:34:52,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:52,827 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, 1, 1, 1, 1, 1] [2020-10-13 15:34:52,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:34:52,828 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:52,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:52,828 INFO L82 PathProgramCache]: Analyzing trace with hash 328521547, now seen corresponding path program 1 times [2020-10-13 15:34:52,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:52,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890989475] [2020-10-13 15:34:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:52,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:34:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:54,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:54,282 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 15:34:54,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890989475] [2020-10-13 15:34:54,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:54,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:54,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410127475] [2020-10-13 15:34:54,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:54,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:54,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:54,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:54,283 INFO L87 Difference]: Start difference. First operand 395 states and 602 transitions. Second operand 5 states. [2020-10-13 15:34:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:54,993 INFO L93 Difference]: Finished difference Result 792 states and 1211 transitions. [2020-10-13 15:34:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:54,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:34:54,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:54,996 INFO L225 Difference]: With dead ends: 792 [2020-10-13 15:34:54,996 INFO L226 Difference]: Without dead ends: 422 [2020-10-13 15:34:54,997 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 15:34:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-13 15:34:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 395. [2020-10-13 15:34:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-13 15:34:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 601 transitions. [2020-10-13 15:34:55,004 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 601 transitions. Word has length 123 [2020-10-13 15:34:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:55,004 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 601 transitions. [2020-10-13 15:34:55,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 601 transitions. [2020-10-13 15:34:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:34:55,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:55,006 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, 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 15:34:55,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:34:55,007 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:55,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1556671915, now seen corresponding path program 1 times [2020-10-13 15:34:55,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:55,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289717270] [2020-10-13 15:34:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:34:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:56,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:56,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:56,102 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 15:34:56,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289717270] [2020-10-13 15:34:56,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:56,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:56,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274523129] [2020-10-13 15:34:56,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:56,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:56,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:56,104 INFO L87 Difference]: Start difference. First operand 395 states and 601 transitions. Second operand 5 states. [2020-10-13 15:34:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:56,824 INFO L93 Difference]: Finished difference Result 792 states and 1209 transitions. [2020-10-13 15:34:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:56,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:34:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:56,827 INFO L225 Difference]: With dead ends: 792 [2020-10-13 15:34:56,827 INFO L226 Difference]: Without dead ends: 422 [2020-10-13 15:34:56,828 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 15:34:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-13 15:34:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 395. [2020-10-13 15:34:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-13 15:34:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 600 transitions. [2020-10-13 15:34:56,836 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 600 transitions. Word has length 123 [2020-10-13 15:34:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:56,837 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 600 transitions. [2020-10-13 15:34:56,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 600 transitions. [2020-10-13 15:34:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:34:56,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:56,838 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, 1, 1, 1, 1, 1] [2020-10-13 15:34:56,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:34:56,839 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:56,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1564424651, now seen corresponding path program 1 times [2020-10-13 15:34:56,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:56,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268913217] [2020-10-13 15:34:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:34:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:34:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:57,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:57,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:34:57,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268913217] [2020-10-13 15:34:57,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:57,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:57,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149061451] [2020-10-13 15:34:57,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:57,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:57,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:57,959 INFO L87 Difference]: Start difference. First operand 395 states and 600 transitions. Second operand 5 states. [2020-10-13 15:34:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:58,819 INFO L93 Difference]: Finished difference Result 852 states and 1305 transitions. [2020-10-13 15:34:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:58,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:34:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:58,822 INFO L225 Difference]: With dead ends: 852 [2020-10-13 15:34:58,822 INFO L226 Difference]: Without dead ends: 482 [2020-10-13 15:34:58,823 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 15:34:58,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-13 15:34:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 432. [2020-10-13 15:34:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-10-13 15:34:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 668 transitions. [2020-10-13 15:34:58,831 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 668 transitions. Word has length 124 [2020-10-13 15:34:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:58,832 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 668 transitions. [2020-10-13 15:34:58,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 668 transitions. [2020-10-13 15:34:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:34:58,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:58,833 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, 1, 1, 1, 1, 1] [2020-10-13 15:34:58,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:34:58,833 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:58,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1257038027, now seen corresponding path program 1 times [2020-10-13 15:34:58,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:58,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038178270] [2020-10-13 15:34:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:34:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-13 15:34:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:34:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:34:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:59,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:00,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038178270] [2020-10-13 15:35:00,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:00,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:00,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393989650] [2020-10-13 15:35:00,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:00,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:00,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:00,001 INFO L87 Difference]: Start difference. First operand 432 states and 668 transitions. Second operand 5 states. [2020-10-13 15:35:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:00,884 INFO L93 Difference]: Finished difference Result 922 states and 1435 transitions. [2020-10-13 15:35:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:00,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:35:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:00,888 INFO L225 Difference]: With dead ends: 922 [2020-10-13 15:35:00,888 INFO L226 Difference]: Without dead ends: 515 [2020-10-13 15:35:00,888 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 15:35:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-13 15:35:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 467. [2020-10-13 15:35:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 732 transitions. [2020-10-13 15:35:00,898 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 732 transitions. Word has length 124 [2020-10-13 15:35:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:00,898 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 732 transitions. [2020-10-13 15:35:00,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 732 transitions. [2020-10-13 15:35:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:35:00,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:00,900 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:00,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:35:00,900 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:00,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1171737520, now seen corresponding path program 1 times [2020-10-13 15:35:00,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:00,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464271541] [2020-10-13 15:35:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:35:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:02,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:02,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464271541] [2020-10-13 15:35:02,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:02,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:02,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108137629] [2020-10-13 15:35:02,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:02,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:02,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:02,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:02,071 INFO L87 Difference]: Start difference. First operand 467 states and 732 transitions. Second operand 5 states. [2020-10-13 15:35:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:02,783 INFO L93 Difference]: Finished difference Result 936 states and 1471 transitions. [2020-10-13 15:35:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:02,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:35:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:02,788 INFO L225 Difference]: With dead ends: 936 [2020-10-13 15:35:02,788 INFO L226 Difference]: Without dead ends: 494 [2020-10-13 15:35:02,789 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 15:35:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-13 15:35:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 467. [2020-10-13 15:35:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 731 transitions. [2020-10-13 15:35:02,799 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 731 transitions. Word has length 125 [2020-10-13 15:35:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:02,799 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 731 transitions. [2020-10-13 15:35:02,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 731 transitions. [2020-10-13 15:35:02,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:35:02,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:02,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:02,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:35:02,801 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash 101065466, now seen corresponding path program 1 times [2020-10-13 15:35:02,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:02,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006361089] [2020-10-13 15:35:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:04,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:35:04,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-10-13 15:35:04,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:35:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:04,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:04,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006361089] [2020-10-13 15:35:04,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:04,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:04,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423874414] [2020-10-13 15:35:04,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:04,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:04,295 INFO L87 Difference]: Start difference. First operand 467 states and 731 transitions. Second operand 5 states. [2020-10-13 15:35:05,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:05,015 INFO L93 Difference]: Finished difference Result 934 states and 1467 transitions. [2020-10-13 15:35:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:05,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:35:05,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:05,017 INFO L225 Difference]: With dead ends: 934 [2020-10-13 15:35:05,017 INFO L226 Difference]: Without dead ends: 492 [2020-10-13 15:35:05,018 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 15:35:05,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-13 15:35:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 467. [2020-10-13 15:35:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 730 transitions. [2020-10-13 15:35:05,026 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 730 transitions. Word has length 126 [2020-10-13 15:35:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:05,026 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 730 transitions. [2020-10-13 15:35:05,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 730 transitions. [2020-10-13 15:35:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:35:05,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:05,028 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:05,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:35:05,028 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash 980941178, now seen corresponding path program 1 times [2020-10-13 15:35:05,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:05,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663393855] [2020-10-13 15:35:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:05,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:35:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:06,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663393855] [2020-10-13 15:35:06,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:06,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:06,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122355621] [2020-10-13 15:35:06,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:06,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:06,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:06,108 INFO L87 Difference]: Start difference. First operand 467 states and 730 transitions. Second operand 5 states. [2020-10-13 15:35:06,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:06,781 INFO L93 Difference]: Finished difference Result 937 states and 1467 transitions. [2020-10-13 15:35:06,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:06,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:35:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:06,785 INFO L225 Difference]: With dead ends: 937 [2020-10-13 15:35:06,785 INFO L226 Difference]: Without dead ends: 495 [2020-10-13 15:35:06,785 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 15:35:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-13 15:35:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 467. [2020-10-13 15:35:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 729 transitions. [2020-10-13 15:35:06,793 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 729 transitions. Word has length 126 [2020-10-13 15:35:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:06,794 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 729 transitions. [2020-10-13 15:35:06,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 729 transitions. [2020-10-13 15:35:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:06,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:06,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2020-10-13 15:35:06,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:35:06,796 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:06,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1240781081, now seen corresponding path program 1 times [2020-10-13 15:35:06,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:06,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890534329] [2020-10-13 15:35:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:35:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:07,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890534329] [2020-10-13 15:35:07,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:07,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:07,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285642875] [2020-10-13 15:35:07,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:07,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:07,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:07,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:07,915 INFO L87 Difference]: Start difference. First operand 467 states and 729 transitions. Second operand 5 states. [2020-10-13 15:35:08,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:08,625 INFO L93 Difference]: Finished difference Result 935 states and 1463 transitions. [2020-10-13 15:35:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:08,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:35:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:08,629 INFO L225 Difference]: With dead ends: 935 [2020-10-13 15:35:08,629 INFO L226 Difference]: Without dead ends: 493 [2020-10-13 15:35:08,630 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 15:35:08,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-13 15:35:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 467. [2020-10-13 15:35:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 728 transitions. [2020-10-13 15:35:08,637 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 728 transitions. Word has length 127 [2020-10-13 15:35:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:08,637 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 728 transitions. [2020-10-13 15:35:08,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 728 transitions. [2020-10-13 15:35:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:08,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:08,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:08,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:35:08,639 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1590705794, now seen corresponding path program 1 times [2020-10-13 15:35:08,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:08,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45369800] [2020-10-13 15:35:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:35:09,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:09,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,174 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 15:35:09,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45369800] [2020-10-13 15:35:09,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:09,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:09,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078983333] [2020-10-13 15:35:09,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:09,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:09,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:09,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:09,176 INFO L87 Difference]: Start difference. First operand 467 states and 728 transitions. Second operand 5 states. [2020-10-13 15:35:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:09,860 INFO L93 Difference]: Finished difference Result 934 states and 1460 transitions. [2020-10-13 15:35:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:09,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:35:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:09,864 INFO L225 Difference]: With dead ends: 934 [2020-10-13 15:35:09,864 INFO L226 Difference]: Without dead ends: 492 [2020-10-13 15:35:09,865 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 15:35:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-13 15:35:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 467. [2020-10-13 15:35:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 727 transitions. [2020-10-13 15:35:09,872 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 727 transitions. Word has length 127 [2020-10-13 15:35:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:09,872 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 727 transitions. [2020-10-13 15:35:09,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 727 transitions. [2020-10-13 15:35:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:09,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:09,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:09,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:35:09,873 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash -361503413, now seen corresponding path program 1 times [2020-10-13 15:35:09,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:09,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321029456] [2020-10-13 15:35:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:35:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:14,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:14,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:14,960 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 15:35:14,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321029456] [2020-10-13 15:35:14,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:14,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:14,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344830822] [2020-10-13 15:35:14,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:14,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:14,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:14,962 INFO L87 Difference]: Start difference. First operand 467 states and 727 transitions. Second operand 5 states. [2020-10-13 15:35:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:15,631 INFO L93 Difference]: Finished difference Result 933 states and 1457 transitions. [2020-10-13 15:35:15,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:15,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:15,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:15,635 INFO L225 Difference]: With dead ends: 933 [2020-10-13 15:35:15,635 INFO L226 Difference]: Without dead ends: 491 [2020-10-13 15:35:15,636 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 15:35:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-13 15:35:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2020-10-13 15:35:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 726 transitions. [2020-10-13 15:35:15,644 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 726 transitions. Word has length 129 [2020-10-13 15:35:15,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:15,645 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 726 transitions. [2020-10-13 15:35:15,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:15,645 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 726 transitions. [2020-10-13 15:35:15,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:15,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:15,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:15,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:35:15,646 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1827486409, now seen corresponding path program 1 times [2020-10-13 15:35:15,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:15,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337393223] [2020-10-13 15:35:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:35:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:20,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:20,736 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 15:35:20,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337393223] [2020-10-13 15:35:20,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:20,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:20,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348165893] [2020-10-13 15:35:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:20,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:20,738 INFO L87 Difference]: Start difference. First operand 467 states and 726 transitions. Second operand 5 states. [2020-10-13 15:35:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:21,417 INFO L93 Difference]: Finished difference Result 933 states and 1455 transitions. [2020-10-13 15:35:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:21,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:21,421 INFO L225 Difference]: With dead ends: 933 [2020-10-13 15:35:21,422 INFO L226 Difference]: Without dead ends: 491 [2020-10-13 15:35:21,422 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 15:35:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-13 15:35:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2020-10-13 15:35:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 725 transitions. [2020-10-13 15:35:21,429 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 725 transitions. Word has length 129 [2020-10-13 15:35:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:21,430 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 725 transitions. [2020-10-13 15:35:21,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 725 transitions. [2020-10-13 15:35:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:35:21,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:21,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:35:21,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:35:21,431 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:21,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1397383843, now seen corresponding path program 1 times [2020-10-13 15:35:21,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:21,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147478889] [2020-10-13 15:35:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:21,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:35:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-13 15:35:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:35:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:22,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:22,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:22,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147478889] [2020-10-13 15:35:22,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:22,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:22,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249989561] [2020-10-13 15:35:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:22,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:22,554 INFO L87 Difference]: Start difference. First operand 467 states and 725 transitions. Second operand 5 states. [2020-10-13 15:35:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:23,280 INFO L93 Difference]: Finished difference Result 934 states and 1455 transitions. [2020-10-13 15:35:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:23,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:35:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:23,283 INFO L225 Difference]: With dead ends: 934 [2020-10-13 15:35:23,283 INFO L226 Difference]: Without dead ends: 492 [2020-10-13 15:35:23,284 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 15:35:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-13 15:35:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 467. [2020-10-13 15:35:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 724 transitions. [2020-10-13 15:35:23,291 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 724 transitions. Word has length 130 [2020-10-13 15:35:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:23,291 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 724 transitions. [2020-10-13 15:35:23,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:23,291 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 724 transitions. [2020-10-13 15:35:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:35:23,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:23,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:23,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:35:23,292 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:23,293 INFO L82 PathProgramCache]: Analyzing trace with hash -96731670, now seen corresponding path program 1 times [2020-10-13 15:35:23,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:23,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695706059] [2020-10-13 15:35:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:35:28,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:35:28,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:28,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:28,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:28,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:28,373 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 15:35:28,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695706059] [2020-10-13 15:35:28,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:28,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:28,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629750724] [2020-10-13 15:35:28,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:28,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:28,374 INFO L87 Difference]: Start difference. First operand 467 states and 724 transitions. Second operand 5 states. [2020-10-13 15:35:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:29,037 INFO L93 Difference]: Finished difference Result 933 states and 1451 transitions. [2020-10-13 15:35:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:29,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:35:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:29,041 INFO L225 Difference]: With dead ends: 933 [2020-10-13 15:35:29,041 INFO L226 Difference]: Without dead ends: 491 [2020-10-13 15:35:29,042 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 15:35:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-13 15:35:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2020-10-13 15:35:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 723 transitions. [2020-10-13 15:35:29,051 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 723 transitions. Word has length 130 [2020-10-13 15:35:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:29,051 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 723 transitions. [2020-10-13 15:35:29,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 723 transitions. [2020-10-13 15:35:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:29,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:29,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:35:29,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:35:29,053 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 952759379, now seen corresponding path program 1 times [2020-10-13 15:35:29,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:29,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782974962] [2020-10-13 15:35:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-13 15:35:29,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:35:29,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:29,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:30,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782974962] [2020-10-13 15:35:30,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:30,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:30,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476300834] [2020-10-13 15:35:30,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:30,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:30,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:30,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:30,014 INFO L87 Difference]: Start difference. First operand 467 states and 723 transitions. Second operand 5 states. [2020-10-13 15:35:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:30,729 INFO L93 Difference]: Finished difference Result 930 states and 1445 transitions. [2020-10-13 15:35:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:30,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 15:35:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:30,733 INFO L225 Difference]: With dead ends: 930 [2020-10-13 15:35:30,733 INFO L226 Difference]: Without dead ends: 488 [2020-10-13 15:35:30,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-13 15:35:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 467. [2020-10-13 15:35:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 722 transitions. [2020-10-13 15:35:30,741 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 722 transitions. Word has length 131 [2020-10-13 15:35:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:30,741 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 722 transitions. [2020-10-13 15:35:30,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 722 transitions. [2020-10-13 15:35:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:30,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:30,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:30,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:35:30,743 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1567940466, now seen corresponding path program 1 times [2020-10-13 15:35:30,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:30,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034270502] [2020-10-13 15:35:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:35,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:35:35,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:35,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:35,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034270502] [2020-10-13 15:35:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:35,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:35,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694827718] [2020-10-13 15:35:35,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:35,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:35,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:35,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:35,835 INFO L87 Difference]: Start difference. First operand 467 states and 722 transitions. Second operand 5 states. [2020-10-13 15:35:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:36,517 INFO L93 Difference]: Finished difference Result 933 states and 1447 transitions. [2020-10-13 15:35:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:36,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 15:35:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:36,520 INFO L225 Difference]: With dead ends: 933 [2020-10-13 15:35:36,520 INFO L226 Difference]: Without dead ends: 491 [2020-10-13 15:35:36,521 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 15:35:36,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-13 15:35:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2020-10-13 15:35:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 15:35:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 721 transitions. [2020-10-13 15:35:36,530 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 721 transitions. Word has length 131 [2020-10-13 15:35:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:36,531 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 721 transitions. [2020-10-13 15:35:36,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 721 transitions. [2020-10-13 15:35:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 15:35:36,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:36,532 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:35:36,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:35:36,533 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 199604808, now seen corresponding path program 1 times [2020-10-13 15:35:36,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:36,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205488221] [2020-10-13 15:35:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 15:35:36,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 15:35:36,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:35:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 15:35:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:35:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:36,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:36,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205488221] [2020-10-13 15:35:36,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:36,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:35:36,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011717495] [2020-10-13 15:35:36,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:35:36,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:36,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:35:36,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:36,724 INFO L87 Difference]: Start difference. First operand 467 states and 721 transitions. Second operand 4 states.