/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.02.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:32:12,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:32:12,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:32:12,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:32:12,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:32:12,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:32:12,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:32:12,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:32:12,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:32:12,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:32:12,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:32:12,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:32:12,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:32:12,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:32:12,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:32:12,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:32:12,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:32:12,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:32:12,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:32:12,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:32:12,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:32:12,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:32:12,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:32:12,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:32:12,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:32:12,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:32:12,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:32:12,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:32:12,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:32:12,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:32:12,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:32:12,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:32:12,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:32:12,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:32:12,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:32:12,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:32:12,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:32:12,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:32:12,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:32:12,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:32:12,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:32:12,661 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 15:32:12,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:32:12,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:32:12,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:32:12,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:32:12,688 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:32:12,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:32:12,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:32:12,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:32:12,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:32:12,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:32:12,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:32:12,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:32:12,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:32:12,690 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:32:12,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:32:12,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:32:12,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:32:12,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:32:12,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:32:12,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:32:12,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:32:12,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:32:12,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:32:12,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:32:12,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:32:12,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:32:12,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:32:12,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:32:12,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:32:12,693 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 15:32:13,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:32:13,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:32:13,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:32:13,039 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:32:13,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:32:13,040 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-1.c [2020-10-13 15:32:13,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02109790c/7c8dce7b51e2442387bf088fd9ada736/FLAG8bd91cf67 [2020-10-13 15:32:13,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:32:13,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.02.i.cil-1.c [2020-10-13 15:32:13,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02109790c/7c8dce7b51e2442387bf088fd9ada736/FLAG8bd91cf67 [2020-10-13 15:32:13,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02109790c/7c8dce7b51e2442387bf088fd9ada736 [2020-10-13 15:32:14,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:32:14,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:32:14,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:32:14,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:32:14,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:32:14,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:32:13" (1/1) ... [2020-10-13 15:32:14,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccabf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14, skipping insertion in model container [2020-10-13 15:32:14,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:32:13" (1/1) ... [2020-10-13 15:32:14,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:32:14,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:32:14,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:32:14,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:32:14,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:32:14,921 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:32:14,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14 WrapperNode [2020-10-13 15:32:14,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:32:14,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:32:14,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:32:14,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:32:14,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:14,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:14,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:14,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:15,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:15,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:15,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (1/1) ... [2020-10-13 15:32:15,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:32:15,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:32:15,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:32:15,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:32:15,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (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 15:32:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:32:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:32:15,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:32:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:32:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:32:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:32:15,128 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:32:15,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:32:15,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:32:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:32:15,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:32:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:32:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:32:15,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:32:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:32:15,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:32:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:32:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:32:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:32:15,133 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:32:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:32:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:32:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:32:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:32:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:32:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:32:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:32:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:32:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:32:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:32:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:32:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:32:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:32:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:32:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:32:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:32:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:32:15,642 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:32:16,215 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:32:16,215 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:32:16,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:32:16,240 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:32:16,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:32:16 BoogieIcfgContainer [2020-10-13 15:32:16,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:32:16,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:32:16,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:32:16,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:32:16,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:32:13" (1/3) ... [2020-10-13 15:32:16,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa1c2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:32:16, skipping insertion in model container [2020-10-13 15:32:16,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:32:14" (2/3) ... [2020-10-13 15:32:16,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa1c2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:32:16, skipping insertion in model container [2020-10-13 15:32:16,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:32:16" (3/3) ... [2020-10-13 15:32:16,254 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-10-13 15:32:16,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:32:16,273 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:32:16,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:32:16,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:32:16,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:32:16,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:32:16,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:32:16,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:32:16,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:32:16,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:32:16,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:32:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-13 15:32:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 15:32:16,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:16,349 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] [2020-10-13 15:32:16,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:16,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:16,355 INFO L82 PathProgramCache]: Analyzing trace with hash 416306971, now seen corresponding path program 1 times [2020-10-13 15:32:16,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:16,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699047813] [2020-10-13 15:32:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:17,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:32:17,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:17,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-13 15:32:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:32:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:32:17,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:32:17,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:17,705 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 15:32:17,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699047813] [2020-10-13 15:32:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:17,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612601182] [2020-10-13 15:32:17,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:17,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:17,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:17,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:17,730 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 5 states. [2020-10-13 15:32:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:18,566 INFO L93 Difference]: Finished difference Result 323 states and 538 transitions. [2020-10-13 15:32:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:18,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-13 15:32:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:18,581 INFO L225 Difference]: With dead ends: 323 [2020-10-13 15:32:18,581 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:32:18,585 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 15:32:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:32:18,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-13 15:32:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:32:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 222 transitions. [2020-10-13 15:32:18,639 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 222 transitions. Word has length 51 [2020-10-13 15:32:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:18,640 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 222 transitions. [2020-10-13 15:32:18,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 222 transitions. [2020-10-13 15:32:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:32:18,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:18,643 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] [2020-10-13 15:32:18,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:32:18,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash -816750361, now seen corresponding path program 1 times [2020-10-13 15:32:18,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:18,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870278310] [2020-10-13 15:32:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:20,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:20,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:32:20,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-10-13 15:32:20,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:32:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:32:20,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:20,178 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 15:32:20,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870278310] [2020-10-13 15:32:20,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:20,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:20,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454781788] [2020-10-13 15:32:20,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:20,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:20,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:20,201 INFO L87 Difference]: Start difference. First operand 147 states and 222 transitions. Second operand 5 states. [2020-10-13 15:32:21,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:21,000 INFO L93 Difference]: Finished difference Result 286 states and 429 transitions. [2020-10-13 15:32:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:21,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:32:21,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:21,003 INFO L225 Difference]: With dead ends: 286 [2020-10-13 15:32:21,004 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 15:32:21,005 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 15:32:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 15:32:21,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2020-10-13 15:32:21,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:32:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 221 transitions. [2020-10-13 15:32:21,018 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 221 transitions. Word has length 64 [2020-10-13 15:32:21,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:21,019 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 221 transitions. [2020-10-13 15:32:21,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:21,019 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 221 transitions. [2020-10-13 15:32:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:32:21,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:21,021 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] [2020-10-13 15:32:21,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:32:21,022 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:21,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1981568581, now seen corresponding path program 1 times [2020-10-13 15:32:21,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:21,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132723684] [2020-10-13 15:32:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:21,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:25,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:25,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:32:25,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4848 [2020-10-13 15:32:25,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:32:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:26,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:32:26,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:26,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:26,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:26,043 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 15:32:26,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132723684] [2020-10-13 15:32:26,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:26,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:26,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87016486] [2020-10-13 15:32:26,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:26,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:26,046 INFO L87 Difference]: Start difference. First operand 147 states and 221 transitions. Second operand 5 states. [2020-10-13 15:32:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:26,738 INFO L93 Difference]: Finished difference Result 285 states and 427 transitions. [2020-10-13 15:32:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:26,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:32:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:26,740 INFO L225 Difference]: With dead ends: 285 [2020-10-13 15:32:26,741 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 15:32:26,742 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 15:32:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 15:32:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 147. [2020-10-13 15:32:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 15:32:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 220 transitions. [2020-10-13 15:32:26,767 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 220 transitions. Word has length 65 [2020-10-13 15:32:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:26,767 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 220 transitions. [2020-10-13 15:32:26,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 220 transitions. [2020-10-13 15:32:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:32:26,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:26,769 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] [2020-10-13 15:32:26,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:32:26,770 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:26,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1143557809, now seen corresponding path program 1 times [2020-10-13 15:32:26,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:26,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768105955] [2020-10-13 15:32:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:26,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:31,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:32:31,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:32:31,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:32:31,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:32:31,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:32:31,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:32:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:31,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:31,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:31,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:31,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:31,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:31,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:31,969 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 15:32:31,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768105955] [2020-10-13 15:32:31,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:31,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:32:31,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150086297] [2020-10-13 15:32:31,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:32:31,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:31,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:32:31,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:32:31,972 INFO L87 Difference]: Start difference. First operand 147 states and 220 transitions. Second operand 6 states. [2020-10-13 15:32:32,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:32,975 INFO L93 Difference]: Finished difference Result 383 states and 582 transitions. [2020-10-13 15:32:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:32:32,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 15:32:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:32,977 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:32:32,978 INFO L226 Difference]: Without dead ends: 261 [2020-10-13 15:32:32,979 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 15:32:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-13 15:32:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 172. [2020-10-13 15:32:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 257 transitions. [2020-10-13 15:32:32,991 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 257 transitions. Word has length 65 [2020-10-13 15:32:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:32,991 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 257 transitions. [2020-10-13 15:32:32,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:32:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 257 transitions. [2020-10-13 15:32:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:32:32,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:32,993 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] [2020-10-13 15:32:32,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:32:32,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1284246148, now seen corresponding path program 1 times [2020-10-13 15:32:32,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:32,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097014003] [2020-10-13 15:32:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:33,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:32:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:33,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 725 [2020-10-13 15:32:33,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:33,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:32:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:33,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:33,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:33,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:32:33,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:33,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:32:33,836 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 15:32:33,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097014003] [2020-10-13 15:32:33,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:33,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:33,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241059150] [2020-10-13 15:32:33,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:33,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:33,839 INFO L87 Difference]: Start difference. First operand 172 states and 257 transitions. Second operand 5 states. [2020-10-13 15:32:34,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:34,599 INFO L93 Difference]: Finished difference Result 333 states and 497 transitions. [2020-10-13 15:32:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:34,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:32:34,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:34,602 INFO L225 Difference]: With dead ends: 333 [2020-10-13 15:32:34,602 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 15:32:34,603 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 15:32:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 15:32:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2020-10-13 15:32:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 256 transitions. [2020-10-13 15:32:34,613 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 256 transitions. Word has length 65 [2020-10-13 15:32:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:34,613 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 256 transitions. [2020-10-13 15:32:34,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:34,614 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 256 transitions. [2020-10-13 15:32:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:32:34,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:34,615 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] [2020-10-13 15:32:34,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:32:34,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:34,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1784897669, now seen corresponding path program 1 times [2020-10-13 15:32:34,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:34,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511405194] [2020-10-13 15:32:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:35,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:35,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:32:35,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:35,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-13 15:32:35,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:35,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:32:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:35,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:35,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:35,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:35,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:35,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:35,167 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 15:32:35,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511405194] [2020-10-13 15:32:35,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:35,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:35,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821554517] [2020-10-13 15:32:35,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:35,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:35,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:35,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:35,170 INFO L87 Difference]: Start difference. First operand 172 states and 256 transitions. Second operand 5 states. [2020-10-13 15:32:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:35,885 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2020-10-13 15:32:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:35,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:32:35,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:35,888 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:32:35,888 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:32:35,889 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 15:32:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:32:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:32:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 255 transitions. [2020-10-13 15:32:35,907 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 255 transitions. Word has length 65 [2020-10-13 15:32:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:35,907 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 255 transitions. [2020-10-13 15:32:35,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 255 transitions. [2020-10-13 15:32:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:32:35,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:35,909 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] [2020-10-13 15:32:35,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:32:35,910 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash -666412894, now seen corresponding path program 1 times [2020-10-13 15:32:35,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:35,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682404085] [2020-10-13 15:32:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:32:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:32:40,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:40,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:32:40,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:41,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:41,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:41,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:41,036 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 15:32:41,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682404085] [2020-10-13 15:32:41,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:41,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:41,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603072731] [2020-10-13 15:32:41,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:41,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:41,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:41,043 INFO L87 Difference]: Start difference. First operand 172 states and 255 transitions. Second operand 5 states. [2020-10-13 15:32:41,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:41,678 INFO L93 Difference]: Finished difference Result 332 states and 494 transitions. [2020-10-13 15:32:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:41,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:32:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:41,681 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:32:41,681 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:32:41,682 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 15:32:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:32:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:32:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 254 transitions. [2020-10-13 15:32:41,690 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 254 transitions. Word has length 66 [2020-10-13 15:32:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:41,690 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 254 transitions. [2020-10-13 15:32:41,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 254 transitions. [2020-10-13 15:32:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:32:41,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:41,692 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] [2020-10-13 15:32:41,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:32:41,692 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash -400531393, now seen corresponding path program 1 times [2020-10-13 15:32:41,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:41,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335518672] [2020-10-13 15:32:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:41,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:44,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:46,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:32:46,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:46,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4558 [2020-10-13 15:32:46,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:46,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:46,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:32:46,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:46,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:46,367 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 15:32:46,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335518672] [2020-10-13 15:32:46,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:46,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:46,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737442546] [2020-10-13 15:32:46,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:46,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:46,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:46,371 INFO L87 Difference]: Start difference. First operand 172 states and 254 transitions. Second operand 5 states. [2020-10-13 15:32:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:47,115 INFO L93 Difference]: Finished difference Result 332 states and 493 transitions. [2020-10-13 15:32:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:47,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:32:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:47,117 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:32:47,118 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:32:47,119 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 15:32:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:32:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:32:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:47,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 253 transitions. [2020-10-13 15:32:47,129 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 253 transitions. Word has length 67 [2020-10-13 15:32:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:47,130 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 253 transitions. [2020-10-13 15:32:47,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 253 transitions. [2020-10-13 15:32:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:47,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:47,132 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] [2020-10-13 15:32:47,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:32:47,132 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:47,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:47,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1950840099, now seen corresponding path program 1 times [2020-10-13 15:32:47,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:47,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481880720] [2020-10-13 15:32:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:47,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:50,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:50,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:50,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:50,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:50,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:50,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:50,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:50,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:50,713 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 15:32:50,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481880720] [2020-10-13 15:32:50,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:50,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:50,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329381563] [2020-10-13 15:32:50,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:50,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:50,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:50,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:50,715 INFO L87 Difference]: Start difference. First operand 172 states and 253 transitions. Second operand 5 states. [2020-10-13 15:32:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:51,598 INFO L93 Difference]: Finished difference Result 332 states and 492 transitions. [2020-10-13 15:32:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:51,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:32:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:51,601 INFO L225 Difference]: With dead ends: 332 [2020-10-13 15:32:51,601 INFO L226 Difference]: Without dead ends: 185 [2020-10-13 15:32:51,602 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 15:32:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-13 15:32:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2020-10-13 15:32:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 15:32:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 252 transitions. [2020-10-13 15:32:51,612 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 252 transitions. Word has length 68 [2020-10-13 15:32:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:51,612 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 252 transitions. [2020-10-13 15:32:51,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 252 transitions. [2020-10-13 15:32:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:32:51,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:51,614 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] [2020-10-13 15:32:51,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:32:51,615 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:51,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1266106814, now seen corresponding path program 1 times [2020-10-13 15:32:51,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:51,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871643128] [2020-10-13 15:32:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:51,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:51,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:51,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:32:51,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:52,044 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 15:32:52,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871643128] [2020-10-13 15:32:52,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:52,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:52,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009902144] [2020-10-13 15:32:52,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:52,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:52,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:52,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:52,046 INFO L87 Difference]: Start difference. First operand 172 states and 252 transitions. Second operand 5 states. [2020-10-13 15:32:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:52,768 INFO L93 Difference]: Finished difference Result 363 states and 542 transitions. [2020-10-13 15:32:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:52,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:32:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:52,770 INFO L225 Difference]: With dead ends: 363 [2020-10-13 15:32:52,771 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:32:52,771 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 15:32:52,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:32:52,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 194. [2020-10-13 15:32:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:32:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 290 transitions. [2020-10-13 15:32:52,779 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 290 transitions. Word has length 68 [2020-10-13 15:32:52,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:52,779 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 290 transitions. [2020-10-13 15:32:52,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:52,779 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 290 transitions. [2020-10-13 15:32:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 15:32:52,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:52,780 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] [2020-10-13 15:32:52,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:32:52,781 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash 326496922, now seen corresponding path program 1 times [2020-10-13 15:32:52,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:52,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728095523] [2020-10-13 15:32:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 15:32:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:32:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2810 [2020-10-13 15:32:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:32:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:32:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:55,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:55,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:55,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:32:55,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:55,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:55,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:55,666 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 15:32:55,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728095523] [2020-10-13 15:32:55,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:55,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:55,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38747683] [2020-10-13 15:32:55,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:55,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:55,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:55,669 INFO L87 Difference]: Start difference. First operand 194 states and 290 transitions. Second operand 5 states. [2020-10-13 15:32:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:56,259 INFO L93 Difference]: Finished difference Result 366 states and 555 transitions. [2020-10-13 15:32:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:56,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-13 15:32:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:56,262 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:32:56,262 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 15:32:56,263 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 15:32:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 15:32:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 194. [2020-10-13 15:32:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:32:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 289 transitions. [2020-10-13 15:32:56,274 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 289 transitions. Word has length 69 [2020-10-13 15:32:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:56,275 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 289 transitions. [2020-10-13 15:32:56,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 289 transitions. [2020-10-13 15:32:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:32:56,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:56,276 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] [2020-10-13 15:32:56,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:32:56,277 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:56,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash 619583268, now seen corresponding path program 1 times [2020-10-13 15:32:56,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:56,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390428225] [2020-10-13 15:32:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:57,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:57,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:32:57,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-13 15:32:57,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:57,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:32:57,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:57,262 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 15:32:57,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390428225] [2020-10-13 15:32:57,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:57,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:57,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925734231] [2020-10-13 15:32:57,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:57,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:57,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:57,265 INFO L87 Difference]: Start difference. First operand 194 states and 289 transitions. Second operand 5 states. [2020-10-13 15:32:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:57,885 INFO L93 Difference]: Finished difference Result 385 states and 578 transitions. [2020-10-13 15:32:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:57,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:32:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:57,888 INFO L225 Difference]: With dead ends: 385 [2020-10-13 15:32:57,888 INFO L226 Difference]: Without dead ends: 216 [2020-10-13 15:32:57,890 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 15:32:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-13 15:32:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 194. [2020-10-13 15:32:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:32:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 288 transitions. [2020-10-13 15:32:57,898 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 288 transitions. Word has length 81 [2020-10-13 15:32:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:57,898 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 288 transitions. [2020-10-13 15:32:57,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 288 transitions. [2020-10-13 15:32:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:32:57,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:57,900 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] [2020-10-13 15:32:57,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:32:57,900 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:57,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1434051609, now seen corresponding path program 1 times [2020-10-13 15:32:57,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:57,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486338084] [2020-10-13 15:32:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:32:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:32:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 768 [2020-10-13 15:32:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:32:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:58,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:58,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:58,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:58,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:58,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:58,746 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 15:32:58,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486338084] [2020-10-13 15:32:58,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:58,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:58,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087241016] [2020-10-13 15:32:58,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:58,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:58,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:58,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:58,748 INFO L87 Difference]: Start difference. First operand 194 states and 288 transitions. Second operand 5 states. [2020-10-13 15:32:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:32:59,366 INFO L93 Difference]: Finished difference Result 383 states and 574 transitions. [2020-10-13 15:32:59,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:32:59,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:32:59,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:32:59,368 INFO L225 Difference]: With dead ends: 383 [2020-10-13 15:32:59,368 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 15:32:59,369 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 15:32:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 15:32:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 194. [2020-10-13 15:32:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:32:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 287 transitions. [2020-10-13 15:32:59,385 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 287 transitions. Word has length 82 [2020-10-13 15:32:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:32:59,385 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 287 transitions. [2020-10-13 15:32:59,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:32:59,385 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 287 transitions. [2020-10-13 15:32:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:32:59,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:32:59,387 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] [2020-10-13 15:32:59,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:32:59,388 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:32:59,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:32:59,388 INFO L82 PathProgramCache]: Analyzing trace with hash -933400088, now seen corresponding path program 1 times [2020-10-13 15:32:59,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:32:59,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588533700] [2020-10-13 15:32:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:32:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:32:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:32:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-13 15:32:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:32:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:32:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:32:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:59,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:32:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:32:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:32:59,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:32:59,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:32:59,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:32:59,812 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 15:32:59,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588533700] [2020-10-13 15:32:59,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:32:59,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:32:59,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348095507] [2020-10-13 15:32:59,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:32:59,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:32:59,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:32:59,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:32:59,814 INFO L87 Difference]: Start difference. First operand 194 states and 287 transitions. Second operand 5 states. [2020-10-13 15:33:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:00,392 INFO L93 Difference]: Finished difference Result 382 states and 571 transitions. [2020-10-13 15:33:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:00,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:33:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:00,394 INFO L225 Difference]: With dead ends: 382 [2020-10-13 15:33:00,394 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 15:33:00,395 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 15:33:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 15:33:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2020-10-13 15:33:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 286 transitions. [2020-10-13 15:33:00,403 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 286 transitions. Word has length 82 [2020-10-13 15:33:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:00,404 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 286 transitions. [2020-10-13 15:33:00,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 286 transitions. [2020-10-13 15:33:00,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:33:00,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:00,406 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] [2020-10-13 15:33:00,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:33:00,406 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash 757172403, now seen corresponding path program 1 times [2020-10-13 15:33:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:00,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755168470] [2020-10-13 15:33:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:01,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:33:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:05,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:05,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:05,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:05,487 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 15:33:05,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755168470] [2020-10-13 15:33:05,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:05,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:05,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348401176] [2020-10-13 15:33:05,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:05,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:05,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:05,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:05,489 INFO L87 Difference]: Start difference. First operand 194 states and 286 transitions. Second operand 5 states. [2020-10-13 15:33:06,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:06,068 INFO L93 Difference]: Finished difference Result 381 states and 568 transitions. [2020-10-13 15:33:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:06,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:33:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:06,070 INFO L225 Difference]: With dead ends: 381 [2020-10-13 15:33:06,071 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:33:06,072 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 15:33:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:33:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2020-10-13 15:33:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 285 transitions. [2020-10-13 15:33:06,080 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 285 transitions. Word has length 83 [2020-10-13 15:33:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:06,080 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 285 transitions. [2020-10-13 15:33:06,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:06,080 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 285 transitions. [2020-10-13 15:33:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:33:06,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:06,082 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] [2020-10-13 15:33:06,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:33:06,082 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash 965702559, now seen corresponding path program 1 times [2020-10-13 15:33:06,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:06,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615316081] [2020-10-13 15:33:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:06,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:11,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:33:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:11,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:11,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:11,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:11,160 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 15:33:11,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615316081] [2020-10-13 15:33:11,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:11,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:11,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200858164] [2020-10-13 15:33:11,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:11,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:11,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:11,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:11,162 INFO L87 Difference]: Start difference. First operand 194 states and 285 transitions. Second operand 5 states. [2020-10-13 15:33:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:11,757 INFO L93 Difference]: Finished difference Result 381 states and 566 transitions. [2020-10-13 15:33:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:11,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:33:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:11,758 INFO L225 Difference]: With dead ends: 381 [2020-10-13 15:33:11,759 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:33:11,759 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 15:33:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:33:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2020-10-13 15:33:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 284 transitions. [2020-10-13 15:33:11,766 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 284 transitions. Word has length 83 [2020-10-13 15:33:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:11,767 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 284 transitions. [2020-10-13 15:33:11,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 284 transitions. [2020-10-13 15:33:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:33:11,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:11,768 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] [2020-10-13 15:33:11,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:33:11,769 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1344559902, now seen corresponding path program 1 times [2020-10-13 15:33:11,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:11,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292985648] [2020-10-13 15:33:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:13,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:33:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:16,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:16,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:16,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:16,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:16,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:16,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:16,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:16,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:16,874 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 15:33:16,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292985648] [2020-10-13 15:33:16,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:16,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:16,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378874828] [2020-10-13 15:33:16,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:16,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:16,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:16,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:16,877 INFO L87 Difference]: Start difference. First operand 194 states and 284 transitions. Second operand 5 states. [2020-10-13 15:33:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:17,443 INFO L93 Difference]: Finished difference Result 381 states and 564 transitions. [2020-10-13 15:33:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:17,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:33:17,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:17,445 INFO L225 Difference]: With dead ends: 381 [2020-10-13 15:33:17,445 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:33:17,446 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 15:33:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:33:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2020-10-13 15:33:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 283 transitions. [2020-10-13 15:33:17,454 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 283 transitions. Word has length 84 [2020-10-13 15:33:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:17,454 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 283 transitions. [2020-10-13 15:33:17,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 283 transitions. [2020-10-13 15:33:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:33:17,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:17,456 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] [2020-10-13 15:33:17,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:33:17,456 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:17,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:17,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1150952806, now seen corresponding path program 1 times [2020-10-13 15:33:17,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:17,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770533826] [2020-10-13 15:33:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:33:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:33:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:22,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:33:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:22,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:33:22,572 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 15:33:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770533826] [2020-10-13 15:33:22,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:22,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:22,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796798939] [2020-10-13 15:33:22,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:22,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:22,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:22,579 INFO L87 Difference]: Start difference. First operand 194 states and 283 transitions. Second operand 5 states. [2020-10-13 15:33:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:23,140 INFO L93 Difference]: Finished difference Result 381 states and 562 transitions. [2020-10-13 15:33:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:23,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:33:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:23,142 INFO L225 Difference]: With dead ends: 381 [2020-10-13 15:33:23,143 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:33:23,144 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 15:33:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:33:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2020-10-13 15:33:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 282 transitions. [2020-10-13 15:33:23,153 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 282 transitions. Word has length 85 [2020-10-13 15:33:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:23,153 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 282 transitions. [2020-10-13 15:33:23,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 282 transitions. [2020-10-13 15:33:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 15:33:23,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:23,155 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] [2020-10-13 15:33:23,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:33:23,155 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash -646800771, now seen corresponding path program 1 times [2020-10-13 15:33:23,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:23,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383657117] [2020-10-13 15:33:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:23,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:25,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:33:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:33:28,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:33:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:28,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:28,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:28,230 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 15:33:28,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383657117] [2020-10-13 15:33:28,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:28,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:28,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496973134] [2020-10-13 15:33:28,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:28,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:28,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:28,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:28,233 INFO L87 Difference]: Start difference. First operand 194 states and 282 transitions. Second operand 5 states. [2020-10-13 15:33:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:28,788 INFO L93 Difference]: Finished difference Result 371 states and 548 transitions. [2020-10-13 15:33:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:28,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-13 15:33:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:28,790 INFO L225 Difference]: With dead ends: 371 [2020-10-13 15:33:28,790 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 15:33:28,791 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 15:33:28,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 15:33:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 194. [2020-10-13 15:33:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 15:33:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 281 transitions. [2020-10-13 15:33:28,798 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 281 transitions. Word has length 86 [2020-10-13 15:33:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:28,799 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 281 transitions. [2020-10-13 15:33:28,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 281 transitions. [2020-10-13 15:33:28,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:33:28,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:28,800 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] [2020-10-13 15:33:28,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:33:28,800 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash 273546962, now seen corresponding path program 1 times [2020-10-13 15:33:28,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:28,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030763051] [2020-10-13 15:33:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:33:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-13 15:33:29,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:29,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 15:33:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:29,446 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 15:33:29,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030763051] [2020-10-13 15:33:29,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:29,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:29,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770912565] [2020-10-13 15:33:29,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:29,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:29,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:29,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:29,447 INFO L87 Difference]: Start difference. First operand 194 states and 281 transitions. Second operand 5 states. [2020-10-13 15:33:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:30,237 INFO L93 Difference]: Finished difference Result 459 states and 682 transitions. [2020-10-13 15:33:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:30,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:33:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:30,245 INFO L225 Difference]: With dead ends: 459 [2020-10-13 15:33:30,245 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 15:33:30,246 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 15:33:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 15:33:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 237. [2020-10-13 15:33:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-13 15:33:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 359 transitions. [2020-10-13 15:33:30,256 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 359 transitions. Word has length 90 [2020-10-13 15:33:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:30,257 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 359 transitions. [2020-10-13 15:33:30,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 359 transitions. [2020-10-13 15:33:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:33:30,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:30,259 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] [2020-10-13 15:33:30,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:33:30,259 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:30,259 INFO L82 PathProgramCache]: Analyzing trace with hash -623846316, now seen corresponding path program 1 times [2020-10-13 15:33:30,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:30,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749838883] [2020-10-13 15:33:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:30,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:33:31,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:31,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-13 15:33:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:33:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:31,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:31,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:31,106 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 15:33:31,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749838883] [2020-10-13 15:33:31,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:31,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:31,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921900435] [2020-10-13 15:33:31,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:31,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:31,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:31,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:31,116 INFO L87 Difference]: Start difference. First operand 237 states and 359 transitions. Second operand 5 states. [2020-10-13 15:33:31,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:31,846 INFO L93 Difference]: Finished difference Result 499 states and 766 transitions. [2020-10-13 15:33:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:31,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:33:31,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:31,848 INFO L225 Difference]: With dead ends: 499 [2020-10-13 15:33:31,849 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:33:31,849 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 15:33:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:33:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2020-10-13 15:33:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 401 transitions. [2020-10-13 15:33:31,859 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 401 transitions. Word has length 90 [2020-10-13 15:33:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:31,859 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 401 transitions. [2020-10-13 15:33:31,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:31,860 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 401 transitions. [2020-10-13 15:33:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:33:31,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:31,861 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] [2020-10-13 15:33:31,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:33:31,862 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:31,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:31,862 INFO L82 PathProgramCache]: Analyzing trace with hash -821675376, now seen corresponding path program 1 times [2020-10-13 15:33:31,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:31,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107336448] [2020-10-13 15:33:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:31,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:33,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:33,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:33:33,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:33,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-13 15:33:33,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:33,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:33,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:33,876 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 15:33:33,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107336448] [2020-10-13 15:33:33,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:33,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:33,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781368519] [2020-10-13 15:33:33,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:33,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:33,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:33,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:33,878 INFO L87 Difference]: Start difference. First operand 261 states and 401 transitions. Second operand 5 states. [2020-10-13 15:33:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:34,703 INFO L93 Difference]: Finished difference Result 550 states and 843 transitions. [2020-10-13 15:33:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:34,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:33:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:34,710 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:33:34,710 INFO L226 Difference]: Without dead ends: 314 [2020-10-13 15:33:34,711 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 15:33:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-13 15:33:34,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 261. [2020-10-13 15:33:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:34,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 400 transitions. [2020-10-13 15:33:34,721 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 400 transitions. Word has length 103 [2020-10-13 15:33:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:34,722 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 400 transitions. [2020-10-13 15:33:34,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 400 transitions. [2020-10-13 15:33:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:33:34,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:34,724 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] [2020-10-13 15:33:34,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:33:34,724 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:34,724 INFO L82 PathProgramCache]: Analyzing trace with hash -781000626, now seen corresponding path program 1 times [2020-10-13 15:33:34,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:34,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838593118] [2020-10-13 15:33:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1459 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:33:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:36,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:36,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:36,274 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 15:33:36,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838593118] [2020-10-13 15:33:36,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:36,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:36,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711818663] [2020-10-13 15:33:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:36,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:36,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:36,276 INFO L87 Difference]: Start difference. First operand 261 states and 400 transitions. Second operand 5 states. [2020-10-13 15:33:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:37,032 INFO L93 Difference]: Finished difference Result 523 states and 805 transitions. [2020-10-13 15:33:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:37,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:33:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:37,034 INFO L225 Difference]: With dead ends: 523 [2020-10-13 15:33:37,035 INFO L226 Difference]: Without dead ends: 287 [2020-10-13 15:33:37,036 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 15:33:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-13 15:33:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2020-10-13 15:33:37,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 399 transitions. [2020-10-13 15:33:37,048 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 399 transitions. Word has length 103 [2020-10-13 15:33:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:37,049 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 399 transitions. [2020-10-13 15:33:37,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 399 transitions. [2020-10-13 15:33:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:37,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:37,050 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] [2020-10-13 15:33:37,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:33:37,051 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1131570683, now seen corresponding path program 1 times [2020-10-13 15:33:37,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:37,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226221632] [2020-10-13 15:33:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:38,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:38,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:38,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:38,497 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 15:33:38,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226221632] [2020-10-13 15:33:38,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:38,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:38,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241873188] [2020-10-13 15:33:38,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:38,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:38,498 INFO L87 Difference]: Start difference. First operand 261 states and 399 transitions. Second operand 5 states. [2020-10-13 15:33:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:39,304 INFO L93 Difference]: Finished difference Result 548 states and 837 transitions. [2020-10-13 15:33:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:39,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:39,307 INFO L225 Difference]: With dead ends: 548 [2020-10-13 15:33:39,307 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 15:33:39,308 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 15:33:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 15:33:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 261. [2020-10-13 15:33:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 398 transitions. [2020-10-13 15:33:39,322 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 398 transitions. Word has length 104 [2020-10-13 15:33:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:39,323 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 398 transitions. [2020-10-13 15:33:39,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 398 transitions. [2020-10-13 15:33:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:39,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:39,324 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] [2020-10-13 15:33:39,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:33:39,325 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:39,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:39,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1632222204, now seen corresponding path program 1 times [2020-10-13 15:33:39,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:39,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578308305] [2020-10-13 15:33:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:39,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:39,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:39,989 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 15:33:39,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578308305] [2020-10-13 15:33:39,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:39,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:39,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070609715] [2020-10-13 15:33:39,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:39,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:39,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:39,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:39,991 INFO L87 Difference]: Start difference. First operand 261 states and 398 transitions. Second operand 5 states. [2020-10-13 15:33:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:40,772 INFO L93 Difference]: Finished difference Result 547 states and 834 transitions. [2020-10-13 15:33:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:40,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:40,777 INFO L225 Difference]: With dead ends: 547 [2020-10-13 15:33:40,777 INFO L226 Difference]: Without dead ends: 311 [2020-10-13 15:33:40,778 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 15:33:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-13 15:33:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 261. [2020-10-13 15:33:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 397 transitions. [2020-10-13 15:33:40,787 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 397 transitions. Word has length 104 [2020-10-13 15:33:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:40,788 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 397 transitions. [2020-10-13 15:33:40,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 397 transitions. [2020-10-13 15:33:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:40,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:40,789 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] [2020-10-13 15:33:40,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:33:40,790 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:40,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1902479363, now seen corresponding path program 1 times [2020-10-13 15:33:40,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:40,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934316944] [2020-10-13 15:33:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:40,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1613 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:33:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:42,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:33:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:42,501 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 15:33:42,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934316944] [2020-10-13 15:33:42,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:42,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:42,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973536325] [2020-10-13 15:33:42,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:42,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:42,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:42,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:42,503 INFO L87 Difference]: Start difference. First operand 261 states and 397 transitions. Second operand 5 states. [2020-10-13 15:33:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:43,201 INFO L93 Difference]: Finished difference Result 521 states and 797 transitions. [2020-10-13 15:33:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:43,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:43,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:43,204 INFO L225 Difference]: With dead ends: 521 [2020-10-13 15:33:43,204 INFO L226 Difference]: Without dead ends: 285 [2020-10-13 15:33:43,205 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 15:33:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-13 15:33:43,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 261. [2020-10-13 15:33:43,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 396 transitions. [2020-10-13 15:33:43,214 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 396 transitions. Word has length 104 [2020-10-13 15:33:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:43,215 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 396 transitions. [2020-10-13 15:33:43,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:43,215 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 396 transitions. [2020-10-13 15:33:43,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:33:43,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:43,216 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] [2020-10-13 15:33:43,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:33:43,217 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1401827842, now seen corresponding path program 1 times [2020-10-13 15:33:43,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:43,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23670306] [2020-10-13 15:33:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:43,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:33:43,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:33:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-13 15:33:43,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:33:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:43,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:33:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:43,906 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 15:33:43,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23670306] [2020-10-13 15:33:43,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:43,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:43,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832670988] [2020-10-13 15:33:43,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:43,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:43,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:43,908 INFO L87 Difference]: Start difference. First operand 261 states and 396 transitions. Second operand 5 states. [2020-10-13 15:33:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:44,610 INFO L93 Difference]: Finished difference Result 520 states and 794 transitions. [2020-10-13 15:33:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:44,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:33:44,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:44,613 INFO L225 Difference]: With dead ends: 520 [2020-10-13 15:33:44,613 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 15:33:44,614 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 15:33:44,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 15:33:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 261. [2020-10-13 15:33:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:44,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 395 transitions. [2020-10-13 15:33:44,623 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 395 transitions. Word has length 104 [2020-10-13 15:33:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:44,624 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 395 transitions. [2020-10-13 15:33:44,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:44,624 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 395 transitions. [2020-10-13 15:33:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:44,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:44,625 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] [2020-10-13 15:33:44,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:33:44,626 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:44,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1312915169, now seen corresponding path program 1 times [2020-10-13 15:33:44,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:44,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562400459] [2020-10-13 15:33:44,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:49,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:33:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:33:49,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:33:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:49,714 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 15:33:49,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562400459] [2020-10-13 15:33:49,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:49,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:49,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804060116] [2020-10-13 15:33:49,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:49,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:49,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:49,716 INFO L87 Difference]: Start difference. First operand 261 states and 395 transitions. Second operand 5 states. [2020-10-13 15:33:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:50,483 INFO L93 Difference]: Finished difference Result 546 states and 827 transitions. [2020-10-13 15:33:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:50,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:50,485 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:33:50,485 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:33:50,486 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 15:33:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:33:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:33:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 394 transitions. [2020-10-13 15:33:50,495 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 394 transitions. Word has length 105 [2020-10-13 15:33:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:50,496 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 394 transitions. [2020-10-13 15:33:50,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 394 transitions. [2020-10-13 15:33:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:50,497 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] [2020-10-13 15:33:50,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:33:50,498 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:50,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1104385013, now seen corresponding path program 1 times [2020-10-13 15:33:50,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:50,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807713875] [2020-10-13 15:33:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:50,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:53,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:33:55,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:33:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:33:55,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:33:55,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:33:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:33:55,592 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 15:33:55,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807713875] [2020-10-13 15:33:55,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:33:55,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:33:55,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964145381] [2020-10-13 15:33:55,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:33:55,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:33:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:33:55,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:33:55,594 INFO L87 Difference]: Start difference. First operand 261 states and 394 transitions. Second operand 5 states. [2020-10-13 15:33:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:33:56,372 INFO L93 Difference]: Finished difference Result 546 states and 825 transitions. [2020-10-13 15:33:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:33:56,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:33:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:33:56,375 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:33:56,375 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:33:56,376 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 15:33:56,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:33:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:33:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:33:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 393 transitions. [2020-10-13 15:33:56,384 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 393 transitions. Word has length 105 [2020-10-13 15:33:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:33:56,385 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 393 transitions. [2020-10-13 15:33:56,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:33:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 393 transitions. [2020-10-13 15:33:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:33:56,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:33:56,386 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] [2020-10-13 15:33:56,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:33:56,387 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:33:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:33:56,387 INFO L82 PathProgramCache]: Analyzing trace with hash -879186083, now seen corresponding path program 1 times [2020-10-13 15:33:56,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:33:56,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362132276] [2020-10-13 15:33:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:33:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:33:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:33:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:34:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:34:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:34:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:01,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:01,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:01,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:01,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:01,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:01,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:01,488 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 15:34:01,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362132276] [2020-10-13 15:34:01,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:01,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:01,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050111473] [2020-10-13 15:34:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:01,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:01,490 INFO L87 Difference]: Start difference. First operand 261 states and 393 transitions. Second operand 5 states. [2020-10-13 15:34:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:02,164 INFO L93 Difference]: Finished difference Result 519 states and 787 transitions. [2020-10-13 15:34:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:02,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:02,168 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:34:02,168 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:34:02,169 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 15:34:02,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:34:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:34:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 392 transitions. [2020-10-13 15:34:02,177 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 392 transitions. Word has length 105 [2020-10-13 15:34:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:02,177 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 392 transitions. [2020-10-13 15:34:02,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 392 transitions. [2020-10-13 15:34:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:34:02,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:02,179 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] [2020-10-13 15:34:02,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:34:02,179 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:02,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:02,179 INFO L82 PathProgramCache]: Analyzing trace with hash -670655927, now seen corresponding path program 1 times [2020-10-13 15:34:02,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:02,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730260347] [2020-10-13 15:34:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:34:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:07,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:07,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:07,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:07,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:07,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:07,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:07,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:07,262 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 15:34:07,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730260347] [2020-10-13 15:34:07,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:07,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:07,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63314411] [2020-10-13 15:34:07,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:07,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:07,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:07,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:07,263 INFO L87 Difference]: Start difference. First operand 261 states and 392 transitions. Second operand 5 states. [2020-10-13 15:34:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:07,937 INFO L93 Difference]: Finished difference Result 519 states and 785 transitions. [2020-10-13 15:34:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:07,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:34:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:07,939 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:34:07,940 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:34:07,941 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 15:34:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:34:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:34:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 391 transitions. [2020-10-13 15:34:07,948 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 391 transitions. Word has length 105 [2020-10-13 15:34:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:07,949 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 391 transitions. [2020-10-13 15:34:07,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 391 transitions. [2020-10-13 15:34:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:34:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:07,950 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] [2020-10-13 15:34:07,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:34:07,951 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1092765194, now seen corresponding path program 1 times [2020-10-13 15:34:07,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:07,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866444929] [2020-10-13 15:34:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:08,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:13,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:13,051 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 15:34:13,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866444929] [2020-10-13 15:34:13,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:13,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:13,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687277498] [2020-10-13 15:34:13,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:13,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:13,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:13,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:13,052 INFO L87 Difference]: Start difference. First operand 261 states and 391 transitions. Second operand 5 states. [2020-10-13 15:34:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:13,850 INFO L93 Difference]: Finished difference Result 546 states and 819 transitions. [2020-10-13 15:34:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:13,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:34:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:13,853 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:34:13,853 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:34:13,854 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 15:34:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:34:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:34:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2020-10-13 15:34:13,861 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 106 [2020-10-13 15:34:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:13,862 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2020-10-13 15:34:13,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2020-10-13 15:34:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:34:13,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:13,863 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] [2020-10-13 15:34:13,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:34:13,864 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:13,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:13,864 INFO L82 PathProgramCache]: Analyzing trace with hash -532065416, now seen corresponding path program 1 times [2020-10-13 15:34:13,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:13,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516573279] [2020-10-13 15:34:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:34:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:34:18,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:34:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:18,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:18,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:18,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:18,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:18,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:18,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:18,969 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 15:34:18,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516573279] [2020-10-13 15:34:18,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:18,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:18,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029419178] [2020-10-13 15:34:18,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:18,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:18,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:18,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:18,971 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand 5 states. [2020-10-13 15:34:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:19,664 INFO L93 Difference]: Finished difference Result 519 states and 781 transitions. [2020-10-13 15:34:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:19,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:34:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:19,667 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:34:19,668 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:34:19,669 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 15:34:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:34:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:34:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 389 transitions. [2020-10-13 15:34:19,677 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 389 transitions. Word has length 106 [2020-10-13 15:34:19,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:19,678 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 389 transitions. [2020-10-13 15:34:19,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 389 transitions. [2020-10-13 15:34:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:34:19,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:19,679 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] [2020-10-13 15:34:19,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:34:19,680 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1935251450, now seen corresponding path program 1 times [2020-10-13 15:34:19,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:19,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303571852] [2020-10-13 15:34:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:19,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:24,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:24,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:24,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:24,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:24,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:24,782 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 15:34:24,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303571852] [2020-10-13 15:34:24,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:24,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:24,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860659498] [2020-10-13 15:34:24,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:24,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:24,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:24,784 INFO L87 Difference]: Start difference. First operand 261 states and 389 transitions. Second operand 5 states. [2020-10-13 15:34:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:25,583 INFO L93 Difference]: Finished difference Result 546 states and 815 transitions. [2020-10-13 15:34:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:25,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:34:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:25,586 INFO L225 Difference]: With dead ends: 546 [2020-10-13 15:34:25,587 INFO L226 Difference]: Without dead ends: 310 [2020-10-13 15:34:25,587 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 15:34:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-13 15:34:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 261. [2020-10-13 15:34:25,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 388 transitions. [2020-10-13 15:34:25,594 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 388 transitions. Word has length 107 [2020-10-13 15:34:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:25,595 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 388 transitions. [2020-10-13 15:34:25,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 388 transitions. [2020-10-13 15:34:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:34:25,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:25,596 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] [2020-10-13 15:34:25,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:34:25,597 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1733427516, now seen corresponding path program 1 times [2020-10-13 15:34:25,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:25,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091781351] [2020-10-13 15:34:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:34:30,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:34:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:34:30,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:34:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:30,695 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 15:34:30,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091781351] [2020-10-13 15:34:30,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:30,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:30,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953620726] [2020-10-13 15:34:30,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:30,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:30,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:30,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:30,697 INFO L87 Difference]: Start difference. First operand 261 states and 388 transitions. Second operand 5 states. [2020-10-13 15:34:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:31,373 INFO L93 Difference]: Finished difference Result 519 states and 777 transitions. [2020-10-13 15:34:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:31,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:34:31,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:31,376 INFO L225 Difference]: With dead ends: 519 [2020-10-13 15:34:31,376 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:34:31,377 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 15:34:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:34:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 261. [2020-10-13 15:34:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-13 15:34:31,383 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 107 [2020-10-13 15:34:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:31,383 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-13 15:34:31,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-13 15:34:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:34:31,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:31,385 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] [2020-10-13 15:34:31,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:34:31,385 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 809745041, now seen corresponding path program 1 times [2020-10-13 15:34:31,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:31,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575436412] [2020-10-13 15:34:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:36,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:36,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:36,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:36,476 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 15:34:36,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575436412] [2020-10-13 15:34:36,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:36,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:36,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546863476] [2020-10-13 15:34:36,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:36,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:36,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:36,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:36,477 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 5 states. [2020-10-13 15:34:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:37,298 INFO L93 Difference]: Finished difference Result 536 states and 799 transitions. [2020-10-13 15:34:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:37,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:34:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:37,301 INFO L225 Difference]: With dead ends: 536 [2020-10-13 15:34:37,302 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 15:34:37,303 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 15:34:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 15:34:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 261. [2020-10-13 15:34:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 386 transitions. [2020-10-13 15:34:37,311 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 386 transitions. Word has length 108 [2020-10-13 15:34:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:37,311 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 386 transitions. [2020-10-13 15:34:37,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 386 transitions. [2020-10-13 15:34:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:34:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:37,313 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] [2020-10-13 15:34:37,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:34:37,313 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1523647597, now seen corresponding path program 1 times [2020-10-13 15:34:37,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:37,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610702694] [2020-10-13 15:34:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:42,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 15:34:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:34:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:34:42,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:42,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:34:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:42,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:42,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:42,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:42,417 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 15:34:42,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610702694] [2020-10-13 15:34:42,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:42,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:42,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287381205] [2020-10-13 15:34:42,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:42,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:42,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:42,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:42,419 INFO L87 Difference]: Start difference. First operand 261 states and 386 transitions. Second operand 5 states. [2020-10-13 15:34:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:43,081 INFO L93 Difference]: Finished difference Result 509 states and 761 transitions. [2020-10-13 15:34:43,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:43,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 15:34:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:43,084 INFO L225 Difference]: With dead ends: 509 [2020-10-13 15:34:43,084 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 15:34:43,085 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 15:34:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 15:34:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2020-10-13 15:34:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 385 transitions. [2020-10-13 15:34:43,092 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 385 transitions. Word has length 108 [2020-10-13 15:34:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:43,092 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 385 transitions. [2020-10-13 15:34:43,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 385 transitions. [2020-10-13 15:34:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:34:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:43,094 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] [2020-10-13 15:34:43,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:34:43,094 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:43,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:43,094 INFO L82 PathProgramCache]: Analyzing trace with hash -847656070, now seen corresponding path program 1 times [2020-10-13 15:34:43,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:43,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923878628] [2020-10-13 15:34:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1433 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:34:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:44,625 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 15:34:44,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923878628] [2020-10-13 15:34:44,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:44,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:44,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219785613] [2020-10-13 15:34:44,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:44,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:44,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:44,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:44,626 INFO L87 Difference]: Start difference. First operand 261 states and 385 transitions. Second operand 5 states. [2020-10-13 15:34:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:45,363 INFO L93 Difference]: Finished difference Result 536 states and 795 transitions. [2020-10-13 15:34:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:45,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:34:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:45,366 INFO L225 Difference]: With dead ends: 536 [2020-10-13 15:34:45,366 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 15:34:45,367 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 15:34:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 15:34:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 261. [2020-10-13 15:34:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 15:34:45,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 384 transitions. [2020-10-13 15:34:45,374 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 384 transitions. Word has length 112 [2020-10-13 15:34:45,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:45,375 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 384 transitions. [2020-10-13 15:34:45,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 384 transitions. [2020-10-13 15:34:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 15:34:45,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:45,376 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] [2020-10-13 15:34:45,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:34:45,376 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1761131388, now seen corresponding path program 1 times [2020-10-13 15:34:45,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:45,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460106050] [2020-10-13 15:34:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:45,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:34:46,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:34:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:46,312 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 15:34:46,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460106050] [2020-10-13 15:34:46,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:46,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:46,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423401784] [2020-10-13 15:34:46,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:46,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:46,313 INFO L87 Difference]: Start difference. First operand 261 states and 384 transitions. Second operand 5 states. [2020-10-13 15:34:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:46,987 INFO L93 Difference]: Finished difference Result 551 states and 823 transitions. [2020-10-13 15:34:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:46,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 15:34:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:46,991 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:34:46,991 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 15:34:46,992 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 15:34:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 15:34:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 287. [2020-10-13 15:34:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:34:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2020-10-13 15:34:47,000 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 112 [2020-10-13 15:34:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:47,000 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2020-10-13 15:34:47,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2020-10-13 15:34:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:34:47,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:47,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:34:47,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:34:47,002 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:47,002 INFO L82 PathProgramCache]: Analyzing trace with hash 925180947, now seen corresponding path program 1 times [2020-10-13 15:34:47,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:47,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500533601] [2020-10-13 15:34:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:47,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:34:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:48,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:48,495 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 15:34:48,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500533601] [2020-10-13 15:34:48,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:48,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:48,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263065146] [2020-10-13 15:34:48,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:48,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:48,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:48,497 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand 5 states. [2020-10-13 15:34:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:49,267 INFO L93 Difference]: Finished difference Result 588 states and 885 transitions. [2020-10-13 15:34:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:49,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:34:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:49,270 INFO L225 Difference]: With dead ends: 588 [2020-10-13 15:34:49,270 INFO L226 Difference]: Without dead ends: 326 [2020-10-13 15:34:49,271 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 15:34:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-13 15:34:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2020-10-13 15:34:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:34:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 429 transitions. [2020-10-13 15:34:49,278 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 429 transitions. Word has length 115 [2020-10-13 15:34:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:49,278 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 429 transitions. [2020-10-13 15:34:49,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 429 transitions. [2020-10-13 15:34:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:34:49,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:49,279 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] [2020-10-13 15:34:49,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:34:49,280 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash -64781506, now seen corresponding path program 1 times [2020-10-13 15:34:49,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:49,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961148290] [2020-10-13 15:34:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:34:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:50,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:50,608 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 15:34:50,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961148290] [2020-10-13 15:34:50,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:50,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:50,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692920824] [2020-10-13 15:34:50,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:50,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:50,609 INFO L87 Difference]: Start difference. First operand 287 states and 429 transitions. Second operand 5 states. [2020-10-13 15:34:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:51,335 INFO L93 Difference]: Finished difference Result 580 states and 870 transitions. [2020-10-13 15:34:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:51,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:34:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:51,338 INFO L225 Difference]: With dead ends: 580 [2020-10-13 15:34:51,338 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:34:51,339 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 15:34:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:34:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 287. [2020-10-13 15:34:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:34:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 428 transitions. [2020-10-13 15:34:51,346 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 428 transitions. Word has length 116 [2020-10-13 15:34:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:51,346 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 428 transitions. [2020-10-13 15:34:51,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 428 transitions. [2020-10-13 15:34:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:34:51,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:51,347 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] [2020-10-13 15:34:51,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:34:51,347 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash -844062547, now seen corresponding path program 1 times [2020-10-13 15:34:51,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:51,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297286136] [2020-10-13 15:34:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:53,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:34:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:53,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:53,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:53,249 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 15:34:53,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297286136] [2020-10-13 15:34:53,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:53,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:53,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148670276] [2020-10-13 15:34:53,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:53,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:53,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:53,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:53,251 INFO L87 Difference]: Start difference. First operand 287 states and 428 transitions. Second operand 5 states. [2020-10-13 15:34:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:54,005 INFO L93 Difference]: Finished difference Result 580 states and 868 transitions. [2020-10-13 15:34:54,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:54,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:34:54,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:54,008 INFO L225 Difference]: With dead ends: 580 [2020-10-13 15:34:54,008 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:34:54,009 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 15:34:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:34:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 287. [2020-10-13 15:34:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:34:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 427 transitions. [2020-10-13 15:34:54,016 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 427 transitions. Word has length 117 [2020-10-13 15:34:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:54,016 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 427 transitions. [2020-10-13 15:34:54,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 427 transitions. [2020-10-13 15:34:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:34:54,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:54,017 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] [2020-10-13 15:34:54,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:34:54,018 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1314482897, now seen corresponding path program 1 times [2020-10-13 15:34:54,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:54,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37771461] [2020-10-13 15:34:54,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:55,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1510 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:34:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:55,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:55,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:55,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:55,638 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 15:34:55,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37771461] [2020-10-13 15:34:55,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:55,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:55,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728645128] [2020-10-13 15:34:55,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:55,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:55,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:55,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:55,641 INFO L87 Difference]: Start difference. First operand 287 states and 427 transitions. Second operand 5 states. [2020-10-13 15:34:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:56,365 INFO L93 Difference]: Finished difference Result 580 states and 866 transitions. [2020-10-13 15:34:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:56,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:34:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:56,368 INFO L225 Difference]: With dead ends: 580 [2020-10-13 15:34:56,368 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:34:56,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:34:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:34:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 287. [2020-10-13 15:34:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 15:34:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 426 transitions. [2020-10-13 15:34:56,376 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 426 transitions. Word has length 118 [2020-10-13 15:34:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:56,377 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 426 transitions. [2020-10-13 15:34:56,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 426 transitions. [2020-10-13 15:34:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:34:56,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:56,378 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] [2020-10-13 15:34:56,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:34:56,378 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash 542489720, now seen corresponding path program 1 times [2020-10-13 15:34:56,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:56,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501846245] [2020-10-13 15:34:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:34:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:34:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:34:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:34:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:34:57,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:34:57,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:34:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:34:57,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501846245] [2020-10-13 15:34:57,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:34:57,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:34:57,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075227213] [2020-10-13 15:34:57,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:34:57,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:34:57,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:34:57,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:34:57,820 INFO L87 Difference]: Start difference. First operand 287 states and 426 transitions. Second operand 5 states. [2020-10-13 15:34:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:34:58,648 INFO L93 Difference]: Finished difference Result 622 states and 938 transitions. [2020-10-13 15:34:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:34:58,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:34:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:34:58,651 INFO L225 Difference]: With dead ends: 622 [2020-10-13 15:34:58,651 INFO L226 Difference]: Without dead ends: 360 [2020-10-13 15:34:58,652 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 15:34:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-13 15:34:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 319. [2020-10-13 15:34:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:34:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 484 transitions. [2020-10-13 15:34:58,659 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 484 transitions. Word has length 118 [2020-10-13 15:34:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:34:58,659 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 484 transitions. [2020-10-13 15:34:58,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:34:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 484 transitions. [2020-10-13 15:34:58,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:34:58,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:34:58,661 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] [2020-10-13 15:34:58,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:34:58,661 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:34:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:34:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1563199100, now seen corresponding path program 1 times [2020-10-13 15:34:58,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:34:58,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584332501] [2020-10-13 15:34:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:34:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:34:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:34:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:00,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:35:00,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:00,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:00,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:00,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:00,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:00,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584332501] [2020-10-13 15:35:00,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:00,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:00,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038297306] [2020-10-13 15:35:00,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:00,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:00,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:00,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:00,319 INFO L87 Difference]: Start difference. First operand 319 states and 484 transitions. Second operand 5 states. [2020-10-13 15:35:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:01,060 INFO L93 Difference]: Finished difference Result 642 states and 977 transitions. [2020-10-13 15:35:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:01,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:35:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:01,063 INFO L225 Difference]: With dead ends: 642 [2020-10-13 15:35:01,063 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 15:35:01,064 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 15:35:01,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 15:35:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 319. [2020-10-13 15:35:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:35:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 483 transitions. [2020-10-13 15:35:01,070 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 483 transitions. Word has length 119 [2020-10-13 15:35:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:01,071 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 483 transitions. [2020-10-13 15:35:01,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 483 transitions. [2020-10-13 15:35:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 15:35:01,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:01,072 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] [2020-10-13 15:35:01,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:35:01,073 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:01,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1523791989, now seen corresponding path program 1 times [2020-10-13 15:35:01,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:01,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072825122] [2020-10-13 15:35:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:01,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:01,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:35:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:01,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:01,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:01,518 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 15:35:01,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072825122] [2020-10-13 15:35:01,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:01,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:01,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492579881] [2020-10-13 15:35:01,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:01,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:01,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:01,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:01,520 INFO L87 Difference]: Start difference. First operand 319 states and 483 transitions. Second operand 5 states. [2020-10-13 15:35:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:02,253 INFO L93 Difference]: Finished difference Result 639 states and 971 transitions. [2020-10-13 15:35:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:02,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 15:35:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:02,256 INFO L225 Difference]: With dead ends: 639 [2020-10-13 15:35:02,257 INFO L226 Difference]: Without dead ends: 345 [2020-10-13 15:35:02,257 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 15:35:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-13 15:35:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 319. [2020-10-13 15:35:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 15:35:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 482 transitions. [2020-10-13 15:35:02,263 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 482 transitions. Word has length 119 [2020-10-13 15:35:02,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:02,264 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 482 transitions. [2020-10-13 15:35:02,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:02,264 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 482 transitions. [2020-10-13 15:35:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:35:02,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:02,265 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:02,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:35:02,265 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1158206152, now seen corresponding path program 1 times [2020-10-13 15:35:02,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:02,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651155365] [2020-10-13 15:35:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:35:03,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:35:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:03,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:03,677 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 15:35:03,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651155365] [2020-10-13 15:35:03,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:03,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:03,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562895703] [2020-10-13 15:35:03,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:03,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:03,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:03,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:03,678 INFO L87 Difference]: Start difference. First operand 319 states and 482 transitions. Second operand 5 states. [2020-10-13 15:35:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:04,331 INFO L93 Difference]: Finished difference Result 651 states and 993 transitions. [2020-10-13 15:35:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:04,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:35:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:04,335 INFO L225 Difference]: With dead ends: 651 [2020-10-13 15:35:04,335 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 15:35:04,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:35:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 15:35:04,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 340. [2020-10-13 15:35:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 518 transitions. [2020-10-13 15:35:04,341 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 518 transitions. Word has length 121 [2020-10-13 15:35:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:04,341 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 518 transitions. [2020-10-13 15:35:04,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 518 transitions. [2020-10-13 15:35:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:35:04,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:04,342 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 15:35:04,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:35:04,343 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:04,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:04,343 INFO L82 PathProgramCache]: Analyzing trace with hash 774043342, now seen corresponding path program 1 times [2020-10-13 15:35:04,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:04,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360156572] [2020-10-13 15:35:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:05,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:35:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:05,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:05,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:05,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:05,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:05,517 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 15:35:05,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360156572] [2020-10-13 15:35:05,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:05,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:05,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264990191] [2020-10-13 15:35:05,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:05,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:05,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:05,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:05,520 INFO L87 Difference]: Start difference. First operand 340 states and 518 transitions. Second operand 5 states. [2020-10-13 15:35:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:06,264 INFO L93 Difference]: Finished difference Result 681 states and 1041 transitions. [2020-10-13 15:35:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:06,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:35:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:06,267 INFO L225 Difference]: With dead ends: 681 [2020-10-13 15:35:06,268 INFO L226 Difference]: Without dead ends: 366 [2020-10-13 15:35:06,268 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 15:35:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-13 15:35:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 340. [2020-10-13 15:35:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 517 transitions. [2020-10-13 15:35:06,275 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 517 transitions. Word has length 122 [2020-10-13 15:35:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:06,275 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 517 transitions. [2020-10-13 15:35:06,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:06,275 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 517 transitions. [2020-10-13 15:35:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:35:06,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:06,277 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] [2020-10-13 15:35:06,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:35:06,277 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:06,277 INFO L82 PathProgramCache]: Analyzing trace with hash -797362834, now seen corresponding path program 1 times [2020-10-13 15:35:06,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:06,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205399564] [2020-10-13 15:35:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:06,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:07,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:35:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:07,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:07,436 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 15:35:07,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205399564] [2020-10-13 15:35:07,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:07,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:07,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756590295] [2020-10-13 15:35:07,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:07,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:07,437 INFO L87 Difference]: Start difference. First operand 340 states and 517 transitions. Second operand 5 states. [2020-10-13 15:35:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:08,156 INFO L93 Difference]: Finished difference Result 681 states and 1039 transitions. [2020-10-13 15:35:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:08,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:35:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:08,159 INFO L225 Difference]: With dead ends: 681 [2020-10-13 15:35:08,159 INFO L226 Difference]: Without dead ends: 366 [2020-10-13 15:35:08,160 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 15:35:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-13 15:35:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 340. [2020-10-13 15:35:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-10-13 15:35:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 516 transitions. [2020-10-13 15:35:08,167 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 516 transitions. Word has length 122 [2020-10-13 15:35:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:08,167 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 516 transitions. [2020-10-13 15:35:08,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 516 transitions. [2020-10-13 15:35:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:35:08,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:08,168 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] [2020-10-13 15:35:08,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:35:08,169 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:08,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1448851298, now seen corresponding path program 1 times [2020-10-13 15:35:08,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:08,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249575923] [2020-10-13 15:35:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:09,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:35:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:35:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:09,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:09,235 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 15:35:09,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249575923] [2020-10-13 15:35:09,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:09,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:09,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068055133] [2020-10-13 15:35:09,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:09,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:09,236 INFO L87 Difference]: Start difference. First operand 340 states and 516 transitions. Second operand 5 states. [2020-10-13 15:35:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:10,146 INFO L93 Difference]: Finished difference Result 741 states and 1137 transitions. [2020-10-13 15:35:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:10,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:35:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:10,150 INFO L225 Difference]: With dead ends: 741 [2020-10-13 15:35:10,151 INFO L226 Difference]: Without dead ends: 426 [2020-10-13 15:35:10,152 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 15:35:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-13 15:35:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 377. [2020-10-13 15:35:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 15:35:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 584 transitions. [2020-10-13 15:35:10,159 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 584 transitions. Word has length 123 [2020-10-13 15:35:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:10,160 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 584 transitions. [2020-10-13 15:35:10,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 584 transitions. [2020-10-13 15:35:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:35:10,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:10,161 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] [2020-10-13 15:35:10,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:35:10,162 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 864824990, now seen corresponding path program 1 times [2020-10-13 15:35:10,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:10,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874664513] [2020-10-13 15:35:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:11,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 15:35:11,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:35:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:11,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:11,447 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 15:35:11,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874664513] [2020-10-13 15:35:11,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:11,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:11,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072077843] [2020-10-13 15:35:11,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:11,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:11,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:11,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:11,449 INFO L87 Difference]: Start difference. First operand 377 states and 584 transitions. Second operand 5 states. [2020-10-13 15:35:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:12,369 INFO L93 Difference]: Finished difference Result 811 states and 1267 transitions. [2020-10-13 15:35:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:12,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:35:12,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:12,373 INFO L225 Difference]: With dead ends: 811 [2020-10-13 15:35:12,373 INFO L226 Difference]: Without dead ends: 459 [2020-10-13 15:35:12,374 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 15:35:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-13 15:35:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 412. [2020-10-13 15:35:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 648 transitions. [2020-10-13 15:35:12,382 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 648 transitions. Word has length 123 [2020-10-13 15:35:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:12,382 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 648 transitions. [2020-10-13 15:35:12,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 648 transitions. [2020-10-13 15:35:12,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:35:12,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:12,383 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] [2020-10-13 15:35:12,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:35:12,384 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:12,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1023944041, now seen corresponding path program 1 times [2020-10-13 15:35:12,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:12,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893397036] [2020-10-13 15:35:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:35:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-13 15:35:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:35:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:13,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:13,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:13,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:13,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:13,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:13,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:13,560 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 15:35:13,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893397036] [2020-10-13 15:35:13,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:13,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:13,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594523114] [2020-10-13 15:35:13,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:13,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:13,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:13,561 INFO L87 Difference]: Start difference. First operand 412 states and 648 transitions. Second operand 5 states. [2020-10-13 15:35:14,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:14,304 INFO L93 Difference]: Finished difference Result 825 states and 1301 transitions. [2020-10-13 15:35:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:14,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:35:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:14,307 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:14,307 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:14,308 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 15:35:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:14,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 647 transitions. [2020-10-13 15:35:14,316 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 647 transitions. Word has length 124 [2020-10-13 15:35:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:14,316 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 647 transitions. [2020-10-13 15:35:14,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 647 transitions. [2020-10-13 15:35:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:35:14,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:14,317 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] [2020-10-13 15:35:14,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:35:14,317 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:14,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1266485241, now seen corresponding path program 1 times [2020-10-13 15:35:14,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:14,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42780800] [2020-10-13 15:35:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:15,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:35:15,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:15,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:15,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:15,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:15,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:15,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:15,520 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 15:35:15,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42780800] [2020-10-13 15:35:15,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:15,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:15,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906269439] [2020-10-13 15:35:15,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:15,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:15,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:15,522 INFO L87 Difference]: Start difference. First operand 412 states and 647 transitions. Second operand 5 states. [2020-10-13 15:35:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:16,272 INFO L93 Difference]: Finished difference Result 823 states and 1297 transitions. [2020-10-13 15:35:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:16,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:35:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:16,275 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:35:16,276 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:35:16,277 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 15:35:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:35:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:35:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 646 transitions. [2020-10-13 15:35:16,284 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 646 transitions. Word has length 125 [2020-10-13 15:35:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:16,285 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 646 transitions. [2020-10-13 15:35:16,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 646 transitions. [2020-10-13 15:35:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:35:16,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:16,286 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] [2020-10-13 15:35:16,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:35:16,286 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash 372246310, now seen corresponding path program 1 times [2020-10-13 15:35:16,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:16,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206013915] [2020-10-13 15:35:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:16,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:35:16,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:35:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:16,848 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 15:35:16,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206013915] [2020-10-13 15:35:16,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:16,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:16,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374738385] [2020-10-13 15:35:16,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:16,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:16,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:16,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:16,850 INFO L87 Difference]: Start difference. First operand 412 states and 646 transitions. Second operand 5 states. [2020-10-13 15:35:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:17,530 INFO L93 Difference]: Finished difference Result 826 states and 1299 transitions. [2020-10-13 15:35:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:17,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:35:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:17,534 INFO L225 Difference]: With dead ends: 826 [2020-10-13 15:35:17,534 INFO L226 Difference]: Without dead ends: 439 [2020-10-13 15:35:17,535 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 15:35:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-13 15:35:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 412. [2020-10-13 15:35:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 645 transitions. [2020-10-13 15:35:17,543 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 645 transitions. Word has length 126 [2020-10-13 15:35:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:17,543 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 645 transitions. [2020-10-13 15:35:17,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 645 transitions. [2020-10-13 15:35:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:17,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:17,544 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] [2020-10-13 15:35:17,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:35:17,545 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:17,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1717462219, now seen corresponding path program 1 times [2020-10-13 15:35:17,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:17,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796600248] [2020-10-13 15:35:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:17,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:35:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:22,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:22,625 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 15:35:22,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796600248] [2020-10-13 15:35:22,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:22,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:22,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039148873] [2020-10-13 15:35:22,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:22,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:22,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:22,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:22,627 INFO L87 Difference]: Start difference. First operand 412 states and 645 transitions. Second operand 5 states. [2020-10-13 15:35:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:23,305 INFO L93 Difference]: Finished difference Result 825 states and 1296 transitions. [2020-10-13 15:35:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:23,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:35:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:23,309 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:23,309 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:23,310 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 15:35:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 644 transitions. [2020-10-13 15:35:23,318 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 644 transitions. Word has length 127 [2020-10-13 15:35:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:23,318 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 644 transitions. [2020-10-13 15:35:23,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 644 transitions. [2020-10-13 15:35:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:35:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:23,320 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] [2020-10-13 15:35:23,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:35:23,320 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1508932063, now seen corresponding path program 1 times [2020-10-13 15:35:23,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:23,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934000372] [2020-10-13 15:35:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:35:28,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 15:35:28,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:28,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:35:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:28,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:28,418 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 15:35:28,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934000372] [2020-10-13 15:35:28,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:28,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:28,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393190573] [2020-10-13 15:35:28,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:28,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:28,420 INFO L87 Difference]: Start difference. First operand 412 states and 644 transitions. Second operand 5 states. [2020-10-13 15:35:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:29,105 INFO L93 Difference]: Finished difference Result 825 states and 1294 transitions. [2020-10-13 15:35:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:29,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:35:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:29,108 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:29,108 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:29,109 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 15:35:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:29,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 643 transitions. [2020-10-13 15:35:29,116 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 643 transitions. Word has length 127 [2020-10-13 15:35:29,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:29,116 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 643 transitions. [2020-10-13 15:35:29,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:29,116 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 643 transitions. [2020-10-13 15:35:29,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:35:29,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:29,117 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] [2020-10-13 15:35:29,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:35:29,117 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash 239300672, now seen corresponding path program 1 times [2020-10-13 15:35:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:29,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415837938] [2020-10-13 15:35:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:35:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:29,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:29,949 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 15:35:29,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415837938] [2020-10-13 15:35:29,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:29,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:29,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145744628] [2020-10-13 15:35:29,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:29,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:29,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:29,951 INFO L87 Difference]: Start difference. First operand 412 states and 643 transitions. Second operand 5 states. [2020-10-13 15:35:30,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:30,703 INFO L93 Difference]: Finished difference Result 823 states and 1289 transitions. [2020-10-13 15:35:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:30,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:35:30,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:30,706 INFO L225 Difference]: With dead ends: 823 [2020-10-13 15:35:30,707 INFO L226 Difference]: Without dead ends: 436 [2020-10-13 15:35:30,707 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 15:35:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-13 15:35:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 412. [2020-10-13 15:35:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 642 transitions. [2020-10-13 15:35:30,714 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 642 transitions. Word has length 128 [2020-10-13 15:35:30,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:30,714 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 642 transitions. [2020-10-13 15:35:30,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 642 transitions. [2020-10-13 15:35:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:35:30,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:30,715 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] [2020-10-13 15:35:30,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:35:30,715 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -748821856, now seen corresponding path program 1 times [2020-10-13 15:35:30,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:30,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837219180] [2020-10-13 15:35:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:35:35,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:35,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:35,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:35,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:35,819 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 15:35:35,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837219180] [2020-10-13 15:35:35,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:35,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:35,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443240559] [2020-10-13 15:35:35,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:35,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:35,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:35,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:35,821 INFO L87 Difference]: Start difference. First operand 412 states and 642 transitions. Second operand 5 states. [2020-10-13 15:35:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:36,513 INFO L93 Difference]: Finished difference Result 825 states and 1290 transitions. [2020-10-13 15:35:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:36,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:35:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:36,516 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:36,516 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:36,516 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 15:35:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 641 transitions. [2020-10-13 15:35:36,524 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 641 transitions. Word has length 128 [2020-10-13 15:35:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:36,524 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 641 transitions. [2020-10-13 15:35:36,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 641 transitions. [2020-10-13 15:35:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:36,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:36,525 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] [2020-10-13 15:35:36,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:35:36,525 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash 639438384, now seen corresponding path program 1 times [2020-10-13 15:35:36,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:36,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600130174] [2020-10-13 15:35:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:35:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:37,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:37,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:37,392 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 15:35:37,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600130174] [2020-10-13 15:35:37,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:37,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:37,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726310603] [2020-10-13 15:35:37,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:37,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:37,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:37,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:37,394 INFO L87 Difference]: Start difference. First operand 412 states and 641 transitions. Second operand 5 states. [2020-10-13 15:35:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:38,164 INFO L93 Difference]: Finished difference Result 820 states and 1281 transitions. [2020-10-13 15:35:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:38,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:38,168 INFO L225 Difference]: With dead ends: 820 [2020-10-13 15:35:38,168 INFO L226 Difference]: Without dead ends: 433 [2020-10-13 15:35:38,169 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 15:35:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-13 15:35:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 412. [2020-10-13 15:35:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 640 transitions. [2020-10-13 15:35:38,175 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 640 transitions. Word has length 129 [2020-10-13 15:35:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:38,176 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 640 transitions. [2020-10-13 15:35:38,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 640 transitions. [2020-10-13 15:35:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:35:38,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:38,177 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] [2020-10-13 15:35:38,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:35:38,177 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:38,177 INFO L82 PathProgramCache]: Analyzing trace with hash 137057436, now seen corresponding path program 1 times [2020-10-13 15:35:38,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:38,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438042267] [2020-10-13 15:35:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:38,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:40,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:43,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:35:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:43,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:43,272 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 15:35:43,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438042267] [2020-10-13 15:35:43,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:43,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:43,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606893948] [2020-10-13 15:35:43,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:43,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:43,273 INFO L87 Difference]: Start difference. First operand 412 states and 640 transitions. Second operand 5 states. [2020-10-13 15:35:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:43,964 INFO L93 Difference]: Finished difference Result 825 states and 1286 transitions. [2020-10-13 15:35:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:43,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:35:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:43,967 INFO L225 Difference]: With dead ends: 825 [2020-10-13 15:35:43,968 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:35:43,968 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 15:35:43,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:35:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 412. [2020-10-13 15:35:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 639 transitions. [2020-10-13 15:35:43,974 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 639 transitions. Word has length 129 [2020-10-13 15:35:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:43,975 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 639 transitions. [2020-10-13 15:35:43,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 639 transitions. [2020-10-13 15:35:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:35:43,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:43,976 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:35:43,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:35:43,976 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:43,976 INFO L82 PathProgramCache]: Analyzing trace with hash 626811067, now seen corresponding path program 1 times [2020-10-13 15:35:43,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:43,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350607296] [2020-10-13 15:35:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:35:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:49,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:35:49,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350607296] [2020-10-13 15:35:49,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:49,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:35:49,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610848457] [2020-10-13 15:35:49,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:35:49,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:49,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:35:49,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:35:49,075 INFO L87 Difference]: Start difference. First operand 412 states and 639 transitions. Second operand 5 states. [2020-10-13 15:35:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:49,744 INFO L93 Difference]: Finished difference Result 815 states and 1272 transitions. [2020-10-13 15:35:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:35:49,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 15:35:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:49,748 INFO L225 Difference]: With dead ends: 815 [2020-10-13 15:35:49,748 INFO L226 Difference]: Without dead ends: 428 [2020-10-13 15:35:49,749 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 15:35:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-13 15:35:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 412. [2020-10-13 15:35:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-13 15:35:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 638 transitions. [2020-10-13 15:35:49,757 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 638 transitions. Word has length 130 [2020-10-13 15:35:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:49,757 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 638 transitions. [2020-10-13 15:35:49,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:35:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 638 transitions. [2020-10-13 15:35:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:49,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:49,759 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] [2020-10-13 15:35:49,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:35:49,759 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:49,760 INFO L82 PathProgramCache]: Analyzing trace with hash -542935129, now seen corresponding path program 1 times [2020-10-13 15:35:49,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:49,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038684998] [2020-10-13 15:35:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 15:35:49,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:35:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 15:35:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:35:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:35:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:35:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:35:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:35:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:35:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:35:50,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:35:50,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:35:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:35:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:35:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:35:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:35:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:35:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:35:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:35:50,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038684998] [2020-10-13 15:35:50,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:35:50,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:35:50,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989987874] [2020-10-13 15:35:50,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:35:50,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:35:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:35:50,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:35:50,100 INFO L87 Difference]: Start difference. First operand 412 states and 638 transitions. Second operand 4 states. [2020-10-13 15:35:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:35:50,768 INFO L93 Difference]: Finished difference Result 1182 states and 1855 transitions. [2020-10-13 15:35:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:35:50,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 15:35:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:35:50,773 INFO L225 Difference]: With dead ends: 1182 [2020-10-13 15:35:50,773 INFO L226 Difference]: Without dead ends: 795 [2020-10-13 15:35:50,774 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 15:35:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-13 15:35:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2020-10-13 15:35:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-13 15:35:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1240 transitions. [2020-10-13 15:35:50,790 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1240 transitions. Word has length 131 [2020-10-13 15:35:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:35:50,790 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1240 transitions. [2020-10-13 15:35:50,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:35:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1240 transitions. [2020-10-13 15:35:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 15:35:50,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:35:50,792 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] [2020-10-13 15:35:50,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:35:50,792 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:35:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:35:50,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1506452713, now seen corresponding path program 1 times [2020-10-13 15:35:50,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:35:50,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018115083] [2020-10-13 15:35:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:35:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 15:35:50,824 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 15:35:50,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 15:35:50,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:35:50,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 03:35:50 BoogieIcfgContainer [2020-10-13 15:35:50,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 15:35:50,878 INFO L168 Benchmark]: Toolchain (without parser) took 216872.83 ms. Allocated memory was 146.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 100.5 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 237.6 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,879 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.54 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 100.3 MB in the beginning and 165.2 MB in the end (delta: -64.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,879 INFO L168 Benchmark]: Boogie Preprocessor took 126.44 ms. Allocated memory is still 205.0 MB. Free memory was 165.2 MB in the beginning and 157.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,879 INFO L168 Benchmark]: RCFGBuilder took 1196.09 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 157.5 MB in the beginning and 176.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,880 INFO L168 Benchmark]: TraceAbstraction took 214627.99 ms. Allocated memory was 238.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 176.7 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 222.6 MB. Max. memory is 7.1 GB. [2020-10-13 15:35:50,882 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 916.54 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 100.3 MB in the beginning and 165.2 MB in the end (delta: -64.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.44 ms. Allocated memory is still 205.0 MB. Free memory was 165.2 MB in the beginning and 157.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1196.09 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 157.5 MB in the beginning and 176.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214627.99 ms. Allocated memory was 238.0 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 176.7 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 222.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1702]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1121. Possible FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_server_data ; [L1065] SSL *s ; [L1066] int tmp ; [L1070] s = malloc(sizeof(SSL)) [L1071] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1072] s->ctx = malloc(sizeof(SSL_CTX)) [L1073] s->session = malloc(sizeof(SSL_SESSION)) [L1074] s->state = 8464 [L1075] CALL ssl3_accept(s) [L1081] BUF_MEM *buf ; [L1082] unsigned long l ; [L1083] unsigned long Time ; [L1084] unsigned long tmp ; [L1085] void (*cb)() ; [L1086] long num1 ; [L1087] int ret ; [L1088] int new_state ; [L1089] int state ; [L1090] int skip ; [L1091] int got_new_session ; [L1092] int tmp___1 = __VERIFIER_nondet_int() ; [L1093] int tmp___2 = __VERIFIER_nondet_int() ; [L1094] int tmp___3 = __VERIFIER_nondet_int() ; [L1095] int tmp___4 = __VERIFIER_nondet_int() ; [L1096] int tmp___5 = __VERIFIER_nondet_int() ; [L1097] int tmp___6 = __VERIFIER_nondet_int() ; [L1098] int tmp___7 ; [L1099] long tmp___8 = __VERIFIER_nondet_long() ; [L1100] int tmp___9 = __VERIFIER_nondet_int() ; [L1101] int tmp___10 = __VERIFIER_nondet_int() ; [L1102] int blastFlag ; [L1106] blastFlag = 0 [L1107] s->hit=__VERIFIER_nondet_int () [L1108] s->state = 8464 [L1109] tmp = __VERIFIER_nondet_int() [L1110] Time = tmp [L1111] cb = (void (*)())((void *)0) [L1112] ret = -1 [L1113] skip = 0 [L1114] got_new_session = 0 [L1115] EXPR s->info_callback [L1115] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1116] EXPR s->info_callback [L1116] cb = s->info_callback [L1120] EXPR s->in_handshake [L1120] s->in_handshake += 1 [L1121] COND FALSE !(tmp___1 & 12288) [L1130] EXPR s->cert [L1130] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND TRUE s->state == 8464 [L1323] s->shutdown = 0 [L1324] ret = __VERIFIER_nondet_int() [L1325] COND TRUE blastFlag == 0 [L1326] blastFlag = 1 [L1330] COND FALSE !(ret <= 0) [L1335] got_new_session = 1 [L1336] s->state = 8496 [L1337] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND TRUE s->state == 8496 [L1341] ret = __VERIFIER_nondet_int() [L1342] COND TRUE blastFlag == 1 [L1343] blastFlag = 2 [L1351] COND FALSE !(ret <= 0) [L1356] s->hit [L1356] COND TRUE s->hit [L1357] s->state = 8656 [L1361] s->init_num = 0 [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND TRUE s->state == 8656 [L1554] EXPR s->session [L1554] EXPR s->s3 [L1554] EXPR (s->s3)->tmp.new_cipher [L1554] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1555] COND FALSE !(! tmp___9) [L1561] ret = __VERIFIER_nondet_int() [L1562] COND TRUE blastFlag == 2 [L1563] blastFlag = 3 [L1567] COND FALSE !(ret <= 0) [L1572] s->state = 8672 [L1573] s->init_num = 0 [L1574] COND FALSE !(! tmp___10) [L1661] EXPR s->s3 [L1661] EXPR (s->s3)->tmp.reuse_message [L1661] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1690] skip = 0 [L1136] COND TRUE 1 [L1138] EXPR s->state [L1138] state = s->state [L1139] EXPR s->state [L1139] COND FALSE !(s->state == 12292) [L1142] EXPR s->state [L1142] COND FALSE !(s->state == 16384) [L1145] EXPR s->state [L1145] COND FALSE !(s->state == 8192) [L1148] EXPR s->state [L1148] COND FALSE !(s->state == 24576) [L1151] EXPR s->state [L1151] COND FALSE !(s->state == 8195) [L1154] EXPR s->state [L1154] COND FALSE !(s->state == 8480) [L1157] EXPR s->state [L1157] COND FALSE !(s->state == 8481) [L1160] EXPR s->state [L1160] COND FALSE !(s->state == 8482) [L1163] EXPR s->state [L1163] COND FALSE !(s->state == 8464) [L1166] EXPR s->state [L1166] COND FALSE !(s->state == 8465) [L1169] EXPR s->state [L1169] COND FALSE !(s->state == 8466) [L1172] EXPR s->state [L1172] COND FALSE !(s->state == 8496) [L1175] EXPR s->state [L1175] COND FALSE !(s->state == 8497) [L1178] EXPR s->state [L1178] COND FALSE !(s->state == 8512) [L1181] EXPR s->state [L1181] COND FALSE !(s->state == 8513) [L1184] EXPR s->state [L1184] COND FALSE !(s->state == 8528) [L1187] EXPR s->state [L1187] COND FALSE !(s->state == 8529) [L1190] EXPR s->state [L1190] COND FALSE !(s->state == 8544) [L1193] EXPR s->state [L1193] COND FALSE !(s->state == 8545) [L1196] EXPR s->state [L1196] COND FALSE !(s->state == 8560) [L1199] EXPR s->state [L1199] COND FALSE !(s->state == 8561) [L1202] EXPR s->state [L1202] COND FALSE !(s->state == 8448) [L1205] EXPR s->state [L1205] COND FALSE !(s->state == 8576) [L1208] EXPR s->state [L1208] COND FALSE !(s->state == 8577) [L1211] EXPR s->state [L1211] COND FALSE !(s->state == 8592) [L1214] EXPR s->state [L1214] COND FALSE !(s->state == 8593) [L1217] EXPR s->state [L1217] COND FALSE !(s->state == 8608) [L1220] EXPR s->state [L1220] COND FALSE !(s->state == 8609) [L1223] EXPR s->state [L1223] COND FALSE !(s->state == 8640) [L1226] EXPR s->state [L1226] COND FALSE !(s->state == 8641) [L1229] EXPR s->state [L1229] COND FALSE !(s->state == 8656) [L1232] EXPR s->state [L1232] COND FALSE !(s->state == 8657) [L1235] EXPR s->state [L1235] COND TRUE s->state == 8672 [L1583] ret = __VERIFIER_nondet_int() [L1584] COND TRUE blastFlag == 3 [L1702] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 214.5s, OverallIterations: 63, TraceHistogramMax: 5, AutomataDifference: 45.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12354 SDtfs, 3421 SDslu, 18708 SDs, 0 SdLazy, 27064 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 476 GetRequests, 186 SyntacticMatches, 42 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=795occurred in iteration=62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 62 MinimizatonAttempts, 1714 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 166.1s InterpolantComputationTime, 6435 NumberOfCodeBlocks, 6435 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 6242 ConstructedInterpolants, 0 QuantifiedInterpolants, 2041087 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 62 InterpolantComputations, 62 PerfectInterpolantSequences, 3898/3898 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...