/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.16.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:39:18,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:39:18,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:39:18,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:39:18,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:39:18,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:39:18,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:39:18,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:39:18,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:39:18,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:39:18,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:39:18,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:39:18,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:39:18,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:39:18,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:39:18,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:39:18,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:39:18,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:39:18,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:39:18,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:39:18,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:39:18,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:39:18,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:39:18,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:39:18,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:39:18,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:39:18,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:39:18,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:39:18,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:39:18,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:39:18,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:39:18,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:39:18,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:39:18,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:39:18,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:39:18,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:39:18,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:39:18,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:39:18,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:39:18,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:39:18,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:39:18,776 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 15:39:18,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:39:18,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:39:18,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:39:18,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:39:18,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:39:18,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:39:18,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:39:18,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:39:18,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:39:18,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:39:18,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:39:18,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:39:18,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:39:18,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:39:18,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:39:18,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:39:18,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:39:18,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:39:18,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:39:18,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:39:18,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:39:18,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:39:18,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:39:18,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:39:18,809 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 15:39:19,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:39:19,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:39:19,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:39:19,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:39:19,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:39:19,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-13 15:39:19,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ab802d1f/16203ca0bdc540b99997420521fb3ba7/FLAG94fef0411 [2020-10-13 15:39:19,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:39:19,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-13 15:39:19,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ab802d1f/16203ca0bdc540b99997420521fb3ba7/FLAG94fef0411 [2020-10-13 15:39:19,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ab802d1f/16203ca0bdc540b99997420521fb3ba7 [2020-10-13 15:39:19,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:39:19,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:39:19,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:39:19,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:39:19,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:39:19,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:39:19" (1/1) ... [2020-10-13 15:39:19,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69894223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:19, skipping insertion in model container [2020-10-13 15:39:19,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:39:19" (1/1) ... [2020-10-13 15:39:19,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:39:20,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:39:20,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:39:20,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:39:20,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:39:20,840 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:39:20,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20 WrapperNode [2020-10-13 15:39:20,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:39:20,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:39:20,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:39:20,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:39:20,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (1/1) ... [2020-10-13 15:39:20,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:39:20,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:39:20,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:39:20,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:39:20,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (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 15:39:21,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-13 15:39:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:39:21,028 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-13 15:39:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:39:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 15:39:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:39:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:39:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-13 15:39:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-13 15:39:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 15:39:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:39:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:39:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:39:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 15:39:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:39:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:39:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:39:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:39:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 15:39:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:39:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-13 15:39:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-13 15:39:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-13 15:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-13 15:39:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:39:21,433 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 15:39:22,082 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-13 15:39:22,082 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-13 15:39:22,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:39:22,105 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 15:39:22,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:39:22 BoogieIcfgContainer [2020-10-13 15:39:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:39:22,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:39:22,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:39:22,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:39:22,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:39:19" (1/3) ... [2020-10-13 15:39:22,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27565718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:39:22, skipping insertion in model container [2020-10-13 15:39:22,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:39:20" (2/3) ... [2020-10-13 15:39:22,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27565718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:39:22, skipping insertion in model container [2020-10-13 15:39:22,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:39:22" (3/3) ... [2020-10-13 15:39:22,118 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2020-10-13 15:39:22,128 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:39:22,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:39:22,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:39:22,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:39:22,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:39:22,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:39:22,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:39:22,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:39:22,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:39:22,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:39:22,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:39:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-13 15:39:22,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 15:39:22,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:22,209 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] [2020-10-13 15:39:22,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:22,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1150770581, now seen corresponding path program 1 times [2020-10-13 15:39:22,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:22,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588392825] [2020-10-13 15:39:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:23,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 15:39:23,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-13 15:39:23,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:23,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:39:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:39:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:23,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:23,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:23,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:23,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:39:23,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:23,697 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 15:39:23,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588392825] [2020-10-13 15:39:23,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:23,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:23,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839466416] [2020-10-13 15:39:23,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:23,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:23,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:23,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:23,725 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 5 states. [2020-10-13 15:39:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:24,646 INFO L93 Difference]: Finished difference Result 351 states and 594 transitions. [2020-10-13 15:39:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:24,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 15:39:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:24,662 INFO L225 Difference]: With dead ends: 351 [2020-10-13 15:39:24,662 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 15:39:24,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 15:39:24,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2020-10-13 15:39:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:39:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 250 transitions. [2020-10-13 15:39:24,726 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 250 transitions. Word has length 50 [2020-10-13 15:39:24,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:24,727 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 250 transitions. [2020-10-13 15:39:24,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 250 transitions. [2020-10-13 15:39:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:39:24,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:24,734 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] [2020-10-13 15:39:24,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:39:24,734 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:24,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1880300276, now seen corresponding path program 1 times [2020-10-13 15:39:24,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:24,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028044966] [2020-10-13 15:39:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 15:39:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-10-13 15:39:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:39:26,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:26,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:26,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:26,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:26,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:39:26,269 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 15:39:26,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028044966] [2020-10-13 15:39:26,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:26,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:26,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863245076] [2020-10-13 15:39:26,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:26,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:26,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:26,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:26,274 INFO L87 Difference]: Start difference. First operand 161 states and 250 transitions. Second operand 5 states. [2020-10-13 15:39:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:26,975 INFO L93 Difference]: Finished difference Result 314 states and 485 transitions. [2020-10-13 15:39:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:26,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-13 15:39:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:26,985 INFO L225 Difference]: With dead ends: 314 [2020-10-13 15:39:26,986 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 15:39:26,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 15:39:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2020-10-13 15:39:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:39:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 249 transitions. [2020-10-13 15:39:27,012 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 249 transitions. Word has length 63 [2020-10-13 15:39:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:27,014 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 249 transitions. [2020-10-13 15:39:27,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 249 transitions. [2020-10-13 15:39:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:39:27,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:27,017 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] [2020-10-13 15:39:27,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:39:27,018 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1667920068, now seen corresponding path program 1 times [2020-10-13 15:39:27,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:27,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675295917] [2020-10-13 15:39:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:29,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:39:31,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:31,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4325 [2020-10-13 15:39:31,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:31,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:31,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:31,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:31,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:31,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:31,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:31,458 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 15:39:31,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675295917] [2020-10-13 15:39:31,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:31,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:31,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656183699] [2020-10-13 15:39:31,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:31,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:31,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:31,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:31,461 INFO L87 Difference]: Start difference. First operand 161 states and 249 transitions. Second operand 5 states. [2020-10-13 15:39:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:32,135 INFO L93 Difference]: Finished difference Result 313 states and 483 transitions. [2020-10-13 15:39:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:32,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:39:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:32,137 INFO L225 Difference]: With dead ends: 313 [2020-10-13 15:39:32,137 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 15:39:32,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 15:39:32,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2020-10-13 15:39:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 15:39:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 248 transitions. [2020-10-13 15:39:32,155 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 248 transitions. Word has length 64 [2020-10-13 15:39:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:32,155 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 248 transitions. [2020-10-13 15:39:32,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 248 transitions. [2020-10-13 15:39:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:39:32,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:32,158 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] [2020-10-13 15:39:32,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:39:32,158 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:32,158 INFO L82 PathProgramCache]: Analyzing trace with hash 991511848, now seen corresponding path program 1 times [2020-10-13 15:39:32,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:32,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560099212] [2020-10-13 15:39:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:39:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:39:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:39:37,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 15:39:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:37,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:37,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:37,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:37,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:37,272 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 15:39:37,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560099212] [2020-10-13 15:39:37,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:37,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:39:37,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446888209] [2020-10-13 15:39:37,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:39:37,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:37,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:39:37,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:37,275 INFO L87 Difference]: Start difference. First operand 161 states and 248 transitions. Second operand 6 states. [2020-10-13 15:39:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:37,887 INFO L93 Difference]: Finished difference Result 307 states and 475 transitions. [2020-10-13 15:39:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:39:37,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 15:39:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:37,891 INFO L225 Difference]: With dead ends: 307 [2020-10-13 15:39:37,891 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 15:39:37,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:39:37,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 15:39:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2020-10-13 15:39:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 259 transitions. [2020-10-13 15:39:37,903 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 259 transitions. Word has length 64 [2020-10-13 15:39:37,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:37,903 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 259 transitions. [2020-10-13 15:39:37,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:39:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 259 transitions. [2020-10-13 15:39:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:39:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:37,905 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] [2020-10-13 15:39:37,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:39:37,906 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash -731287213, now seen corresponding path program 1 times [2020-10-13 15:39:37,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:37,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172832363] [2020-10-13 15:39:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:37,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:39:38,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:39:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-13 15:39:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:39:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:38,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:38,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:38,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:38,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:38,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:38,679 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 15:39:38,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172832363] [2020-10-13 15:39:38,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:38,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:38,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715590447] [2020-10-13 15:39:38,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:38,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:38,681 INFO L87 Difference]: Start difference. First operand 170 states and 259 transitions. Second operand 5 states. [2020-10-13 15:39:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:39,278 INFO L93 Difference]: Finished difference Result 338 states and 513 transitions. [2020-10-13 15:39:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:39,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:39:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:39,280 INFO L225 Difference]: With dead ends: 338 [2020-10-13 15:39:39,280 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 15:39:39,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 15:39:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 170. [2020-10-13 15:39:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 258 transitions. [2020-10-13 15:39:39,305 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 258 transitions. Word has length 64 [2020-10-13 15:39:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:39,305 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 258 transitions. [2020-10-13 15:39:39,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 258 transitions. [2020-10-13 15:39:39,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 15:39:39,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:39,307 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] [2020-10-13 15:39:39,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:39:39,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:39,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1363072818, now seen corresponding path program 1 times [2020-10-13 15:39:39,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:39,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840589476] [2020-10-13 15:39:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:39,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 15:39:39,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:39:39,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-13 15:39:39,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:39,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:39:39,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:39,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:39,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:39,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:39,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:39,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:39,709 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 15:39:39,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840589476] [2020-10-13 15:39:39,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:39,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:39,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445843180] [2020-10-13 15:39:39,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:39,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:39,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:39,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:39,712 INFO L87 Difference]: Start difference. First operand 170 states and 258 transitions. Second operand 5 states. [2020-10-13 15:39:40,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:40,302 INFO L93 Difference]: Finished difference Result 337 states and 511 transitions. [2020-10-13 15:39:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:40,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-13 15:39:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:40,304 INFO L225 Difference]: With dead ends: 337 [2020-10-13 15:39:40,304 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 15:39:40,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:40,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 15:39:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2020-10-13 15:39:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 257 transitions. [2020-10-13 15:39:40,328 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 257 transitions. Word has length 64 [2020-10-13 15:39:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:40,329 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 257 transitions. [2020-10-13 15:39:40,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 257 transitions. [2020-10-13 15:39:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:39:40,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:40,331 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 15:39:40,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:39:40,331 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1828141681, now seen corresponding path program 1 times [2020-10-13 15:39:40,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:40,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547646572] [2020-10-13 15:39:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:40,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:43,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:43,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:39:43,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3175 [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:39:43,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:43,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:43,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:43,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:43,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:43,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:43,593 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 15:39:43,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547646572] [2020-10-13 15:39:43,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:43,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:43,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429745797] [2020-10-13 15:39:43,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:43,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:43,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:43,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:43,600 INFO L87 Difference]: Start difference. First operand 170 states and 257 transitions. Second operand 5 states. [2020-10-13 15:39:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:44,225 INFO L93 Difference]: Finished difference Result 328 states and 499 transitions. [2020-10-13 15:39:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:44,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-13 15:39:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:44,228 INFO L225 Difference]: With dead ends: 328 [2020-10-13 15:39:44,228 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:39:44,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:39:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 170. [2020-10-13 15:39:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:44,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 256 transitions. [2020-10-13 15:39:44,240 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 256 transitions. Word has length 65 [2020-10-13 15:39:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:44,241 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 256 transitions. [2020-10-13 15:39:44,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 256 transitions. [2020-10-13 15:39:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 15:39:44,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:44,249 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] [2020-10-13 15:39:44,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:39:44,250 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash -944512255, now seen corresponding path program 1 times [2020-10-13 15:39:44,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:44,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693147480] [2020-10-13 15:39:44,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 15:39:49,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:39:49,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:39:49,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:39:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:39:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:49,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:49,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:49,362 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 15:39:49,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693147480] [2020-10-13 15:39:49,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:49,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:39:49,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363632677] [2020-10-13 15:39:49,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:39:49,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:39:49,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:49,365 INFO L87 Difference]: Start difference. First operand 170 states and 256 transitions. Second operand 6 states. [2020-10-13 15:39:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:50,148 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2020-10-13 15:39:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:39:50,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 15:39:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:50,151 INFO L225 Difference]: With dead ends: 325 [2020-10-13 15:39:50,153 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 15:39:50,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:39:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 15:39:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2020-10-13 15:39:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 256 transitions. [2020-10-13 15:39:50,164 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 256 transitions. Word has length 65 [2020-10-13 15:39:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:50,165 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 256 transitions. [2020-10-13 15:39:50,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:39:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 256 transitions. [2020-10-13 15:39:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:39:50,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:50,173 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] [2020-10-13 15:39:50,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:39:50,173 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1940936632, now seen corresponding path program 1 times [2020-10-13 15:39:50,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:50,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654997502] [2020-10-13 15:39:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:50,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:50,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:52,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:53,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:39:53,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:39:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:53,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:53,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:39:53,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:53,426 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 15:39:53,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654997502] [2020-10-13 15:39:53,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:53,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:39:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320474778] [2020-10-13 15:39:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:39:53,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:39:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:39:53,428 INFO L87 Difference]: Start difference. First operand 170 states and 256 transitions. Second operand 5 states. [2020-10-13 15:39:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:39:54,249 INFO L93 Difference]: Finished difference Result 328 states and 498 transitions. [2020-10-13 15:39:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:39:54,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:39:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:39:54,252 INFO L225 Difference]: With dead ends: 328 [2020-10-13 15:39:54,253 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:39:54,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:39:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 170. [2020-10-13 15:39:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:39:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 255 transitions. [2020-10-13 15:39:54,271 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 255 transitions. Word has length 66 [2020-10-13 15:39:54,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:39:54,271 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 255 transitions. [2020-10-13 15:39:54,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:39:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 255 transitions. [2020-10-13 15:39:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:39:54,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:39:54,273 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] [2020-10-13 15:39:54,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:39:54,274 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:39:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:39:54,274 INFO L82 PathProgramCache]: Analyzing trace with hash -278779485, now seen corresponding path program 1 times [2020-10-13 15:39:54,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:39:54,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911493031] [2020-10-13 15:39:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:39:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:54,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:54,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:39:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:39:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:39:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:59,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:39:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:39:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:39:59,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:39:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:39:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:39:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:39:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:39:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:39:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:39:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:39:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:39:59,378 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 15:39:59,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911493031] [2020-10-13 15:39:59,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:39:59,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:39:59,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986252886] [2020-10-13 15:39:59,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:39:59,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:39:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:39:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:39:59,380 INFO L87 Difference]: Start difference. First operand 170 states and 255 transitions. Second operand 6 states. [2020-10-13 15:40:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:00,048 INFO L93 Difference]: Finished difference Result 325 states and 493 transitions. [2020-10-13 15:40:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:40:00,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 15:40:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:00,050 INFO L225 Difference]: With dead ends: 325 [2020-10-13 15:40:00,051 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 15:40:00,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:40:00,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 15:40:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2020-10-13 15:40:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:40:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 255 transitions. [2020-10-13 15:40:00,058 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 255 transitions. Word has length 66 [2020-10-13 15:40:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:00,059 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 255 transitions. [2020-10-13 15:40:00,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:40:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 255 transitions. [2020-10-13 15:40:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:40:00,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:00,060 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] [2020-10-13 15:40:00,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:40:00,060 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:00,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:00,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1103816022, now seen corresponding path program 1 times [2020-10-13 15:40:00,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:00,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532683408] [2020-10-13 15:40:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:00,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:40:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-13 15:40:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:40:01,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:40:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:01,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:01,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:01,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:01,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:01,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:01,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:01,996 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 15:40:01,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532683408] [2020-10-13 15:40:01,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:01,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:01,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944875529] [2020-10-13 15:40:01,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:01,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:01,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:01,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:01,998 INFO L87 Difference]: Start difference. First operand 170 states and 255 transitions. Second operand 5 states. [2020-10-13 15:40:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:02,645 INFO L93 Difference]: Finished difference Result 328 states and 497 transitions. [2020-10-13 15:40:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:02,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:40:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:02,648 INFO L225 Difference]: With dead ends: 328 [2020-10-13 15:40:02,648 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 15:40:02,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:02,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 15:40:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 170. [2020-10-13 15:40:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 15:40:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 254 transitions. [2020-10-13 15:40:02,656 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 254 transitions. Word has length 67 [2020-10-13 15:40:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:02,657 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 254 transitions. [2020-10-13 15:40:02,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 254 transitions. [2020-10-13 15:40:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:40:02,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:02,658 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] [2020-10-13 15:40:02,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:40:02,658 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:02,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1009168811, now seen corresponding path program 1 times [2020-10-13 15:40:02,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:02,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520277369] [2020-10-13 15:40:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:02,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 15:40:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:02,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:02,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:02,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:02,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:02,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:02,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:02,980 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 15:40:02,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520277369] [2020-10-13 15:40:02,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:02,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:02,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516061292] [2020-10-13 15:40:02,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:02,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:02,982 INFO L87 Difference]: Start difference. First operand 170 states and 254 transitions. Second operand 5 states. [2020-10-13 15:40:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:03,570 INFO L93 Difference]: Finished difference Result 367 states and 556 transitions. [2020-10-13 15:40:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:03,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-10-13 15:40:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:03,573 INFO L225 Difference]: With dead ends: 367 [2020-10-13 15:40:03,574 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:40:03,574 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 15:40:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:40:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 192. [2020-10-13 15:40:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 292 transitions. [2020-10-13 15:40:03,581 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 292 transitions. Word has length 67 [2020-10-13 15:40:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:03,581 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 292 transitions. [2020-10-13 15:40:03,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 292 transitions. [2020-10-13 15:40:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 15:40:03,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:03,583 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] [2020-10-13 15:40:03,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:40:03,583 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:03,583 INFO L82 PathProgramCache]: Analyzing trace with hash -562962276, now seen corresponding path program 1 times [2020-10-13 15:40:03,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:03,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98255445] [2020-10-13 15:40:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:06,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 15:40:08,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:40:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:40:08,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:40:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:40:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:40:08,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:08,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:08,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:08,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:08,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:08,676 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 15:40:08,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98255445] [2020-10-13 15:40:08,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:08,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 15:40:08,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433581906] [2020-10-13 15:40:08,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:40:08,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:08,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:40:08,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:08,679 INFO L87 Difference]: Start difference. First operand 192 states and 292 transitions. Second operand 6 states. [2020-10-13 15:40:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:09,235 INFO L93 Difference]: Finished difference Result 369 states and 568 transitions. [2020-10-13 15:40:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:40:09,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-13 15:40:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:09,237 INFO L225 Difference]: With dead ends: 369 [2020-10-13 15:40:09,237 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 15:40:09,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:40:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 15:40:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2020-10-13 15:40:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 292 transitions. [2020-10-13 15:40:09,246 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 292 transitions. Word has length 67 [2020-10-13 15:40:09,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:09,246 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 292 transitions. [2020-10-13 15:40:09,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 15:40:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 292 transitions. [2020-10-13 15:40:09,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 15:40:09,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:09,248 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] [2020-10-13 15:40:09,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:40:09,248 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 884084093, now seen corresponding path program 1 times [2020-10-13 15:40:09,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:09,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964753944] [2020-10-13 15:40:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:11,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 15:40:11,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2190 [2020-10-13 15:40:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:40:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:40:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:11,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:11,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:11,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:11,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:11,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:11,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:11,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:11,508 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 15:40:11,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964753944] [2020-10-13 15:40:11,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:11,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:11,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226309076] [2020-10-13 15:40:11,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:11,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:11,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:11,509 INFO L87 Difference]: Start difference. First operand 192 states and 292 transitions. Second operand 5 states. [2020-10-13 15:40:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:12,025 INFO L93 Difference]: Finished difference Result 362 states and 559 transitions. [2020-10-13 15:40:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:12,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-13 15:40:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:12,027 INFO L225 Difference]: With dead ends: 362 [2020-10-13 15:40:12,027 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 15:40:12,028 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 15:40:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 15:40:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-10-13 15:40:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 291 transitions. [2020-10-13 15:40:12,035 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 291 transitions. Word has length 68 [2020-10-13 15:40:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:12,035 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 291 transitions. [2020-10-13 15:40:12,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 291 transitions. [2020-10-13 15:40:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 15:40:12,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:12,037 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] [2020-10-13 15:40:12,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:40:12,037 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1474585954, now seen corresponding path program 1 times [2020-10-13 15:40:12,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:12,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377443926] [2020-10-13 15:40:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 15:40:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-13 15:40:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:40:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:12,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:12,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:12,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:12,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:12,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:12,767 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 15:40:12,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377443926] [2020-10-13 15:40:12,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:12,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:12,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093749568] [2020-10-13 15:40:12,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:12,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:12,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:12,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:12,769 INFO L87 Difference]: Start difference. First operand 192 states and 291 transitions. Second operand 5 states. [2020-10-13 15:40:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:13,364 INFO L93 Difference]: Finished difference Result 389 states and 592 transitions. [2020-10-13 15:40:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:13,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-13 15:40:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:13,369 INFO L225 Difference]: With dead ends: 389 [2020-10-13 15:40:13,369 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 15:40:13,371 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 15:40:13,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 15:40:13,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 192. [2020-10-13 15:40:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 290 transitions. [2020-10-13 15:40:13,387 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 290 transitions. Word has length 80 [2020-10-13 15:40:13,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:13,388 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 290 transitions. [2020-10-13 15:40:13,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 290 transitions. [2020-10-13 15:40:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:40:13,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:13,390 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] [2020-10-13 15:40:13,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:40:13,390 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash -745662042, now seen corresponding path program 1 times [2020-10-13 15:40:13,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:13,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251341815] [2020-10-13 15:40:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:18,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:18,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:40:18,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:40:18,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:40:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:18,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:18,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:18,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:18,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:18,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:18,483 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 15:40:18,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251341815] [2020-10-13 15:40:18,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:18,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:18,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177058857] [2020-10-13 15:40:18,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:18,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:18,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:18,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:18,485 INFO L87 Difference]: Start difference. First operand 192 states and 290 transitions. Second operand 5 states. [2020-10-13 15:40:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:19,054 INFO L93 Difference]: Finished difference Result 379 states and 577 transitions. [2020-10-13 15:40:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:19,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:40:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:19,061 INFO L225 Difference]: With dead ends: 379 [2020-10-13 15:40:19,061 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 15:40:19,062 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 15:40:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 15:40:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2020-10-13 15:40:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 289 transitions. [2020-10-13 15:40:19,068 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 289 transitions. Word has length 81 [2020-10-13 15:40:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:19,068 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 289 transitions. [2020-10-13 15:40:19,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 289 transitions. [2020-10-13 15:40:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:40:19,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:19,069 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] [2020-10-13 15:40:19,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:40:19,070 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash 190970813, now seen corresponding path program 1 times [2020-10-13 15:40:19,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:19,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613808169] [2020-10-13 15:40:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:40:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:19,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:19,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:19,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:19,780 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 15:40:19,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613808169] [2020-10-13 15:40:19,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:19,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:19,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852232705] [2020-10-13 15:40:19,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:19,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:19,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:19,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:19,782 INFO L87 Difference]: Start difference. First operand 192 states and 289 transitions. Second operand 5 states. [2020-10-13 15:40:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:20,323 INFO L93 Difference]: Finished difference Result 377 states and 573 transitions. [2020-10-13 15:40:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:20,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:40:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:20,325 INFO L225 Difference]: With dead ends: 377 [2020-10-13 15:40:20,326 INFO L226 Difference]: Without dead ends: 210 [2020-10-13 15:40:20,326 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 15:40:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-13 15:40:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 192. [2020-10-13 15:40:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 288 transitions. [2020-10-13 15:40:20,333 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 288 transitions. Word has length 81 [2020-10-13 15:40:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:20,333 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 288 transitions. [2020-10-13 15:40:20,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 288 transitions. [2020-10-13 15:40:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-13 15:40:20,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:20,335 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] [2020-10-13 15:40:20,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:40:20,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2009636452, now seen corresponding path program 1 times [2020-10-13 15:40:20,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:20,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477719356] [2020-10-13 15:40:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:20,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:40:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:20,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:20,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:20,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:20,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:20,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:20,817 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 15:40:20,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477719356] [2020-10-13 15:40:20,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:20,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:20,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521945267] [2020-10-13 15:40:20,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:20,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:20,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:20,818 INFO L87 Difference]: Start difference. First operand 192 states and 288 transitions. Second operand 5 states. [2020-10-13 15:40:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:21,344 INFO L93 Difference]: Finished difference Result 376 states and 570 transitions. [2020-10-13 15:40:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:21,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-13 15:40:21,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:21,347 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:40:21,347 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:40:21,350 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 15:40:21,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:40:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:40:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2020-10-13 15:40:21,363 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 81 [2020-10-13 15:40:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:21,363 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2020-10-13 15:40:21,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2020-10-13 15:40:21,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 15:40:21,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:21,365 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] [2020-10-13 15:40:21,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:40:21,368 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash 353369415, now seen corresponding path program 1 times [2020-10-13 15:40:21,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:21,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299113899] [2020-10-13 15:40:21,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:21,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:21,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:24,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:40:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:26,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:26,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:26,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:26,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:26,439 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 15:40:26,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299113899] [2020-10-13 15:40:26,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:26,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:26,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385239894] [2020-10-13 15:40:26,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:26,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:26,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:26,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:26,441 INFO L87 Difference]: Start difference. First operand 192 states and 287 transitions. Second operand 5 states. [2020-10-13 15:40:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:26,979 INFO L93 Difference]: Finished difference Result 376 states and 568 transitions. [2020-10-13 15:40:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:26,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-10-13 15:40:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:26,982 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:40:26,982 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:40:26,983 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 15:40:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:40:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:40:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2020-10-13 15:40:26,989 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 82 [2020-10-13 15:40:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:26,989 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2020-10-13 15:40:26,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2020-10-13 15:40:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 15:40:26,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:26,991 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] [2020-10-13 15:40:26,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:40:26,991 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:26,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:26,991 INFO L82 PathProgramCache]: Analyzing trace with hash -827330654, now seen corresponding path program 1 times [2020-10-13 15:40:26,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:26,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139918537] [2020-10-13 15:40:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:27,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:27,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:27,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:31,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:40:31,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4670 [2020-10-13 15:40:31,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:31,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:40:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:31,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:31,727 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 15:40:31,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139918537] [2020-10-13 15:40:31,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:31,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:31,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535012487] [2020-10-13 15:40:31,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:31,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:31,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:31,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:31,729 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand 5 states. [2020-10-13 15:40:32,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:32,249 INFO L93 Difference]: Finished difference Result 376 states and 566 transitions. [2020-10-13 15:40:32,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:32,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 15:40:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:32,252 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:40:32,253 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:40:32,254 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 15:40:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:40:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:40:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 285 transitions. [2020-10-13 15:40:32,260 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 285 transitions. Word has length 83 [2020-10-13 15:40:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:32,260 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 285 transitions. [2020-10-13 15:40:32,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 285 transitions. [2020-10-13 15:40:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 15:40:32,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:32,262 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] [2020-10-13 15:40:32,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:40:32,262 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1186876076, now seen corresponding path program 1 times [2020-10-13 15:40:32,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:32,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052965768] [2020-10-13 15:40:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:32,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4935 [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:37,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:37,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:40:37,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:37,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:37,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:37,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:37,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:37,264 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 15:40:37,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052965768] [2020-10-13 15:40:37,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:37,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779363966] [2020-10-13 15:40:37,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:37,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:37,266 INFO L87 Difference]: Start difference. First operand 192 states and 285 transitions. Second operand 5 states. [2020-10-13 15:40:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:37,813 INFO L93 Difference]: Finished difference Result 376 states and 564 transitions. [2020-10-13 15:40:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:37,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 15:40:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:37,816 INFO L225 Difference]: With dead ends: 376 [2020-10-13 15:40:37,816 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 15:40:37,817 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 15:40:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 15:40:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 192. [2020-10-13 15:40:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 284 transitions. [2020-10-13 15:40:37,823 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 284 transitions. Word has length 84 [2020-10-13 15:40:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:37,823 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 284 transitions. [2020-10-13 15:40:37,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 284 transitions. [2020-10-13 15:40:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 15:40:37,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:37,824 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] [2020-10-13 15:40:37,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:40:37,825 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:37,825 INFO L82 PathProgramCache]: Analyzing trace with hash -836021529, now seen corresponding path program 1 times [2020-10-13 15:40:37,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:37,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370077561] [2020-10-13 15:40:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:39,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:40:42,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 15:40:42,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:40:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:42,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:42,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:42,911 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 15:40:42,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370077561] [2020-10-13 15:40:42,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:42,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:42,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473942351] [2020-10-13 15:40:42,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:42,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:42,913 INFO L87 Difference]: Start difference. First operand 192 states and 284 transitions. Second operand 5 states. [2020-10-13 15:40:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:43,442 INFO L93 Difference]: Finished difference Result 366 states and 550 transitions. [2020-10-13 15:40:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:43,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 15:40:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:43,446 INFO L225 Difference]: With dead ends: 366 [2020-10-13 15:40:43,446 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 15:40:43,447 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 15:40:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 15:40:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 192. [2020-10-13 15:40:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 15:40:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 283 transitions. [2020-10-13 15:40:43,453 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 283 transitions. Word has length 85 [2020-10-13 15:40:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:43,453 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 283 transitions. [2020-10-13 15:40:43,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2020-10-13 15:40:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 15:40:43,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:43,455 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] [2020-10-13 15:40:43,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 15:40:43,455 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:43,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:43,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2112636429, now seen corresponding path program 1 times [2020-10-13 15:40:43,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:43,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182819469] [2020-10-13 15:40:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:40:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:43,713 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 15:40:43,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182819469] [2020-10-13 15:40:43,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:43,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:43,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524442679] [2020-10-13 15:40:43,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:43,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:43,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:43,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:43,714 INFO L87 Difference]: Start difference. First operand 192 states and 283 transitions. Second operand 5 states. [2020-10-13 15:40:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:44,546 INFO L93 Difference]: Finished difference Result 482 states and 728 transitions. [2020-10-13 15:40:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:44,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-13 15:40:44,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:44,549 INFO L225 Difference]: With dead ends: 482 [2020-10-13 15:40:44,549 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 15:40:44,551 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 15:40:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 15:40:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 233. [2020-10-13 15:40:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-13 15:40:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 357 transitions. [2020-10-13 15:40:44,558 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 357 transitions. Word has length 89 [2020-10-13 15:40:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:44,558 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 357 transitions. [2020-10-13 15:40:44,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 357 transitions. [2020-10-13 15:40:44,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 15:40:44,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:44,559 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] [2020-10-13 15:40:44,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 15:40:44,560 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1934184373, now seen corresponding path program 1 times [2020-10-13 15:40:44,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:44,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079246373] [2020-10-13 15:40:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:44,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:45,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 15:40:45,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-13 15:40:45,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:45,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:40:45,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:45,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:45,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:45,071 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 15:40:45,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079246373] [2020-10-13 15:40:45,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:45,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:45,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071100969] [2020-10-13 15:40:45,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:45,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:45,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:45,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:45,073 INFO L87 Difference]: Start difference. First operand 233 states and 357 transitions. Second operand 5 states. [2020-10-13 15:40:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:45,751 INFO L93 Difference]: Finished difference Result 500 states and 774 transitions. [2020-10-13 15:40:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:45,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-10-13 15:40:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:45,754 INFO L225 Difference]: With dead ends: 500 [2020-10-13 15:40:45,754 INFO L226 Difference]: Without dead ends: 292 [2020-10-13 15:40:45,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-13 15:40:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 257. [2020-10-13 15:40:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-13 15:40:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2020-10-13 15:40:45,763 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 89 [2020-10-13 15:40:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:45,763 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2020-10-13 15:40:45,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2020-10-13 15:40:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 15:40:45,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:45,764 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 15:40:45,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 15:40:45,765 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2096577735, now seen corresponding path program 1 times [2020-10-13 15:40:45,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:45,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318532177] [2020-10-13 15:40:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:40:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:46,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:46,028 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 15:40:46,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318532177] [2020-10-13 15:40:46,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:46,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:46,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416250914] [2020-10-13 15:40:46,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:46,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:46,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:46,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:46,029 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand 5 states. [2020-10-13 15:40:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:46,763 INFO L93 Difference]: Finished difference Result 562 states and 872 transitions. [2020-10-13 15:40:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:46,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-13 15:40:46,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:46,765 INFO L225 Difference]: With dead ends: 562 [2020-10-13 15:40:46,766 INFO L226 Difference]: Without dead ends: 330 [2020-10-13 15:40:46,767 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 15:40:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-13 15:40:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 258. [2020-10-13 15:40:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:40:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 400 transitions. [2020-10-13 15:40:46,774 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 400 transitions. Word has length 90 [2020-10-13 15:40:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:46,774 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 400 transitions. [2020-10-13 15:40:46,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 400 transitions. [2020-10-13 15:40:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:40:46,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:46,776 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] [2020-10-13 15:40:46,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 15:40:46,776 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1610856618, now seen corresponding path program 1 times [2020-10-13 15:40:46,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:46,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806995448] [2020-10-13 15:40:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:48,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:40:48,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:48,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:48,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:48,104 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 15:40:48,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806995448] [2020-10-13 15:40:48,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:48,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:48,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830059356] [2020-10-13 15:40:48,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:48,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:48,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:48,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:48,106 INFO L87 Difference]: Start difference. First operand 258 states and 400 transitions. Second operand 5 states. [2020-10-13 15:40:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:48,870 INFO L93 Difference]: Finished difference Result 563 states and 872 transitions. [2020-10-13 15:40:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:48,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:40:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:48,873 INFO L225 Difference]: With dead ends: 563 [2020-10-13 15:40:48,873 INFO L226 Difference]: Without dead ends: 330 [2020-10-13 15:40:48,874 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 15:40:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-13 15:40:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 258. [2020-10-13 15:40:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:40:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 399 transitions. [2020-10-13 15:40:48,881 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 399 transitions. Word has length 102 [2020-10-13 15:40:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:48,882 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 399 transitions. [2020-10-13 15:40:48,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 399 transitions. [2020-10-13 15:40:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 15:40:48,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:48,883 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] [2020-10-13 15:40:48,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 15:40:48,883 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:48,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1297325268, now seen corresponding path program 1 times [2020-10-13 15:40:48,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:48,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433903174] [2020-10-13 15:40:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1221 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:40:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:50,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:50,187 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 15:40:50,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433903174] [2020-10-13 15:40:50,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:50,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:50,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400963164] [2020-10-13 15:40:50,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:50,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:50,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:50,189 INFO L87 Difference]: Start difference. First operand 258 states and 399 transitions. Second operand 5 states. [2020-10-13 15:40:50,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:50,883 INFO L93 Difference]: Finished difference Result 526 states and 815 transitions. [2020-10-13 15:40:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:50,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-13 15:40:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:50,885 INFO L225 Difference]: With dead ends: 526 [2020-10-13 15:40:50,885 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 15:40:50,886 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 15:40:50,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 15:40:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 258. [2020-10-13 15:40:50,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:40:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 398 transitions. [2020-10-13 15:40:50,893 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 398 transitions. Word has length 102 [2020-10-13 15:40:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:50,894 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 398 transitions. [2020-10-13 15:40:50,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:50,894 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 398 transitions. [2020-10-13 15:40:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:40:50,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:50,895 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] [2020-10-13 15:40:50,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 15:40:50,895 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:50,896 INFO L82 PathProgramCache]: Analyzing trace with hash -816238754, now seen corresponding path program 1 times [2020-10-13 15:40:50,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:50,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555474346] [2020-10-13 15:40:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:50,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:50,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:40:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:55,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:55,983 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 15:40:55,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555474346] [2020-10-13 15:40:55,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:55,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:55,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062844741] [2020-10-13 15:40:55,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:55,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:55,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:55,985 INFO L87 Difference]: Start difference. First operand 258 states and 398 transitions. Second operand 5 states. [2020-10-13 15:40:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:56,714 INFO L93 Difference]: Finished difference Result 553 states and 855 transitions. [2020-10-13 15:40:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:56,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:40:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:56,717 INFO L225 Difference]: With dead ends: 553 [2020-10-13 15:40:56,717 INFO L226 Difference]: Without dead ends: 320 [2020-10-13 15:40:56,718 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 15:40:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-13 15:40:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 258. [2020-10-13 15:40:56,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:40:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 397 transitions. [2020-10-13 15:40:56,724 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 397 transitions. Word has length 103 [2020-10-13 15:40:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:56,725 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 397 transitions. [2020-10-13 15:40:56,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 397 transitions. [2020-10-13 15:40:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:40:56,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:56,726 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] [2020-10-13 15:40:56,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 15:40:56,726 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 120394101, now seen corresponding path program 1 times [2020-10-13 15:40:56,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:56,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547443816] [2020-10-13 15:40:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:56,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:40:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:57,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:57,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:57,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:40:57,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:57,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:57,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:57,965 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 15:40:57,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547443816] [2020-10-13 15:40:57,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:57,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933704169] [2020-10-13 15:40:57,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:57,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:57,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:57,967 INFO L87 Difference]: Start difference. First operand 258 states and 397 transitions. Second operand 5 states. [2020-10-13 15:40:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:40:58,783 INFO L93 Difference]: Finished difference Result 551 states and 851 transitions. [2020-10-13 15:40:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:40:58,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:40:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:40:58,788 INFO L225 Difference]: With dead ends: 551 [2020-10-13 15:40:58,788 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 15:40:58,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:40:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 15:40:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-10-13 15:40:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:40:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 396 transitions. [2020-10-13 15:40:58,799 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 396 transitions. Word has length 103 [2020-10-13 15:40:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:40:58,800 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 396 transitions. [2020-10-13 15:40:58,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:40:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 396 transitions. [2020-10-13 15:40:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:40:58,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:40:58,804 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] [2020-10-13 15:40:58,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 15:40:58,804 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:40:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:40:58,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2080213164, now seen corresponding path program 1 times [2020-10-13 15:40:58,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:40:58,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083278012] [2020-10-13 15:40:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:40:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:40:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:40:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 15:40:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:40:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:40:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:40:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:40:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:40:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:40:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:40:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:40:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:40:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:40:59,413 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 15:40:59,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083278012] [2020-10-13 15:40:59,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:40:59,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:40:59,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664818756] [2020-10-13 15:40:59,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:40:59,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:40:59,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:40:59,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:40:59,415 INFO L87 Difference]: Start difference. First operand 258 states and 396 transitions. Second operand 5 states. [2020-10-13 15:41:00,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:00,137 INFO L93 Difference]: Finished difference Result 550 states and 848 transitions. [2020-10-13 15:41:00,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:00,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:41:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:00,139 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:41:00,140 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:41:00,141 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 15:41:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:41:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-10-13 15:41:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 395 transitions. [2020-10-13 15:41:00,147 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 395 transitions. Word has length 103 [2020-10-13 15:41:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:00,147 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 395 transitions. [2020-10-13 15:41:00,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 395 transitions. [2020-10-13 15:41:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:41:00,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:00,148 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] [2020-10-13 15:41:00,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 15:41:00,149 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:00,149 INFO L82 PathProgramCache]: Analyzing trace with hash -775564004, now seen corresponding path program 1 times [2020-10-13 15:41:00,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:00,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516273670] [2020-10-13 15:41:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:00,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:41:05,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:05,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:05,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:05,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:05,234 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 15:41:05,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516273670] [2020-10-13 15:41:05,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:05,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:05,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885665816] [2020-10-13 15:41:05,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:05,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:05,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:05,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:05,235 INFO L87 Difference]: Start difference. First operand 258 states and 395 transitions. Second operand 5 states. [2020-10-13 15:41:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:05,913 INFO L93 Difference]: Finished difference Result 516 states and 794 transitions. [2020-10-13 15:41:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:05,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:41:05,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:05,914 INFO L225 Difference]: With dead ends: 516 [2020-10-13 15:41:05,914 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 15:41:05,915 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 15:41:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 15:41:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 258. [2020-10-13 15:41:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 394 transitions. [2020-10-13 15:41:05,921 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 394 transitions. Word has length 103 [2020-10-13 15:41:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:05,921 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 394 transitions. [2020-10-13 15:41:05,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 394 transitions. [2020-10-13 15:41:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:41:05,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:05,922 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] [2020-10-13 15:41:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 15:41:05,923 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:05,923 INFO L82 PathProgramCache]: Analyzing trace with hash 161068851, now seen corresponding path program 1 times [2020-10-13 15:41:05,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:05,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071406745] [2020-10-13 15:41:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:05,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:07,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:41:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:07,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:07,140 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 15:41:07,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071406745] [2020-10-13 15:41:07,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:07,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:07,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889550853] [2020-10-13 15:41:07,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:07,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:07,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:07,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:07,142 INFO L87 Difference]: Start difference. First operand 258 states and 394 transitions. Second operand 5 states. [2020-10-13 15:41:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:07,806 INFO L93 Difference]: Finished difference Result 514 states and 790 transitions. [2020-10-13 15:41:07,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:07,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:41:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:07,809 INFO L225 Difference]: With dead ends: 514 [2020-10-13 15:41:07,809 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 15:41:07,810 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 15:41:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 15:41:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 258. [2020-10-13 15:41:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 393 transitions. [2020-10-13 15:41:07,817 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 393 transitions. Word has length 103 [2020-10-13 15:41:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:07,817 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 393 transitions. [2020-10-13 15:41:07,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 393 transitions. [2020-10-13 15:41:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 15:41:07,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:07,818 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] [2020-10-13 15:41:07,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 15:41:07,819 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2039538414, now seen corresponding path program 1 times [2020-10-13 15:41:07,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:07,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455664970] [2020-10-13 15:41:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:08,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:41:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:08,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:08,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:08,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:08,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:08,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:08,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:08,428 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 15:41:08,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455664970] [2020-10-13 15:41:08,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:08,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:08,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332331524] [2020-10-13 15:41:08,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:08,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:08,439 INFO L87 Difference]: Start difference. First operand 258 states and 393 transitions. Second operand 5 states. [2020-10-13 15:41:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:09,111 INFO L93 Difference]: Finished difference Result 513 states and 787 transitions. [2020-10-13 15:41:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:09,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-13 15:41:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:09,114 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:41:09,114 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 15:41:09,115 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 15:41:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 15:41:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-13 15:41:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 392 transitions. [2020-10-13 15:41:09,122 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 392 transitions. Word has length 103 [2020-10-13 15:41:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:09,122 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 392 transitions. [2020-10-13 15:41:09,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 392 transitions. [2020-10-13 15:41:09,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:41:09,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:09,124 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] [2020-10-13 15:41:09,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 15:41:09,124 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:09,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1834508657, now seen corresponding path program 1 times [2020-10-13 15:41:09,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:09,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095316103] [2020-10-13 15:41:09,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:09,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:41:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:14,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:14,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:14,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:14,213 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 15:41:14,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095316103] [2020-10-13 15:41:14,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:14,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:14,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850464948] [2020-10-13 15:41:14,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:14,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:14,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:14,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:14,214 INFO L87 Difference]: Start difference. First operand 258 states and 392 transitions. Second operand 5 states. [2020-10-13 15:41:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:14,948 INFO L93 Difference]: Finished difference Result 550 states and 840 transitions. [2020-10-13 15:41:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:14,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:41:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:14,951 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:41:14,951 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:41:14,952 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 15:41:14,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:41:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-10-13 15:41:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 391 transitions. [2020-10-13 15:41:14,958 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 391 transitions. Word has length 104 [2020-10-13 15:41:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:14,958 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 391 transitions. [2020-10-13 15:41:14,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 391 transitions. [2020-10-13 15:41:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 15:41:14,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:14,960 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] [2020-10-13 15:41:14,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 15:41:14,960 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -573591407, now seen corresponding path program 1 times [2020-10-13 15:41:14,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:14,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095430151] [2020-10-13 15:41:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:19,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:19,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:41:19,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:20,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:20,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:20,043 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 15:41:20,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095430151] [2020-10-13 15:41:20,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:20,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:20,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874864876] [2020-10-13 15:41:20,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:20,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:20,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:20,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:20,045 INFO L87 Difference]: Start difference. First operand 258 states and 391 transitions. Second operand 5 states. [2020-10-13 15:41:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:20,696 INFO L93 Difference]: Finished difference Result 513 states and 783 transitions. [2020-10-13 15:41:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:20,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 15:41:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:20,699 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:41:20,699 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 15:41:20,700 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 15:41:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 15:41:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-13 15:41:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 390 transitions. [2020-10-13 15:41:20,706 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 390 transitions. Word has length 104 [2020-10-13 15:41:20,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:20,706 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 390 transitions. [2020-10-13 15:41:20,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 390 transitions. [2020-10-13 15:41:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:41:20,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:20,708 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] [2020-10-13 15:41:20,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 15:41:20,708 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:20,708 INFO L82 PathProgramCache]: Analyzing trace with hash 67925850, now seen corresponding path program 1 times [2020-10-13 15:41:20,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:20,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491040410] [2020-10-13 15:41:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:20,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:25,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:41:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:25,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:25,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:25,815 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 15:41:25,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491040410] [2020-10-13 15:41:25,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:25,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:25,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807118835] [2020-10-13 15:41:25,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:25,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:25,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:25,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:25,817 INFO L87 Difference]: Start difference. First operand 258 states and 390 transitions. Second operand 5 states. [2020-10-13 15:41:26,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:26,567 INFO L93 Difference]: Finished difference Result 550 states and 836 transitions. [2020-10-13 15:41:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:26,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:41:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:26,570 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:41:26,570 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:41:26,571 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 15:41:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:41:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-10-13 15:41:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 389 transitions. [2020-10-13 15:41:26,577 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 389 transitions. Word has length 105 [2020-10-13 15:41:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:26,578 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 389 transitions. [2020-10-13 15:41:26,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 389 transitions. [2020-10-13 15:41:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 15:41:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:26,579 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] [2020-10-13 15:41:26,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 15:41:26,579 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash 501654936, now seen corresponding path program 1 times [2020-10-13 15:41:26,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:26,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601646423] [2020-10-13 15:41:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:41:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:31,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:31,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:31,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:31,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:31,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:31,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:31,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:31,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:31,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:31,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:31,666 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 15:41:31,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601646423] [2020-10-13 15:41:31,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:31,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:31,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774915731] [2020-10-13 15:41:31,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:31,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:31,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:31,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:31,667 INFO L87 Difference]: Start difference. First operand 258 states and 389 transitions. Second operand 5 states. [2020-10-13 15:41:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:32,313 INFO L93 Difference]: Finished difference Result 513 states and 779 transitions. [2020-10-13 15:41:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:32,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-13 15:41:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:32,315 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:41:32,315 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 15:41:32,316 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 15:41:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 15:41:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-13 15:41:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 388 transitions. [2020-10-13 15:41:32,323 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 388 transitions. Word has length 105 [2020-10-13 15:41:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:32,323 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 388 transitions. [2020-10-13 15:41:32,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 388 transitions. [2020-10-13 15:41:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:41:32,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:32,324 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] [2020-10-13 15:41:32,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 15:41:32,325 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:32,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1124943372, now seen corresponding path program 1 times [2020-10-13 15:41:32,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:32,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351781463] [2020-10-13 15:41:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:32,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:36,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:41:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:37,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:37,410 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 15:41:37,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351781463] [2020-10-13 15:41:37,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:37,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:37,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927305486] [2020-10-13 15:41:37,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:37,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:37,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:37,412 INFO L87 Difference]: Start difference. First operand 258 states and 388 transitions. Second operand 5 states. [2020-10-13 15:41:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:38,148 INFO L93 Difference]: Finished difference Result 550 states and 832 transitions. [2020-10-13 15:41:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:38,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:41:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:38,151 INFO L225 Difference]: With dead ends: 550 [2020-10-13 15:41:38,151 INFO L226 Difference]: Without dead ends: 317 [2020-10-13 15:41:38,152 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 15:41:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-13 15:41:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2020-10-13 15:41:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 387 transitions. [2020-10-13 15:41:38,158 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 387 transitions. Word has length 106 [2020-10-13 15:41:38,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:38,159 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 387 transitions. [2020-10-13 15:41:38,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 387 transitions. [2020-10-13 15:41:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 15:41:38,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:38,160 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] [2020-10-13 15:41:38,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 15:41:38,160 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:38,161 INFO L82 PathProgramCache]: Analyzing trace with hash -564243594, now seen corresponding path program 1 times [2020-10-13 15:41:38,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:38,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496510890] [2020-10-13 15:41:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:43,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:43,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 15:41:43,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:41:43,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:41:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:43,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:43,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:43,239 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 15:41:43,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496510890] [2020-10-13 15:41:43,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:43,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:43,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354544559] [2020-10-13 15:41:43,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:43,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:43,241 INFO L87 Difference]: Start difference. First operand 258 states and 387 transitions. Second operand 5 states. [2020-10-13 15:41:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:43,904 INFO L93 Difference]: Finished difference Result 513 states and 775 transitions. [2020-10-13 15:41:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:43,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 15:41:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:43,907 INFO L225 Difference]: With dead ends: 513 [2020-10-13 15:41:43,907 INFO L226 Difference]: Without dead ends: 280 [2020-10-13 15:41:43,908 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 15:41:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-13 15:41:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2020-10-13 15:41:43,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 386 transitions. [2020-10-13 15:41:43,914 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 386 transitions. Word has length 106 [2020-10-13 15:41:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:43,914 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 386 transitions. [2020-10-13 15:41:43,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 386 transitions. [2020-10-13 15:41:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:41:43,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:43,915 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] [2020-10-13 15:41:43,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 15:41:43,916 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash 512019615, now seen corresponding path program 1 times [2020-10-13 15:41:43,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:43,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240244138] [2020-10-13 15:41:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:48,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:41:48,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:48,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:41:48,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:41:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:48,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:48,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:48,995 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 15:41:48,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240244138] [2020-10-13 15:41:48,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:48,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:48,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941992922] [2020-10-13 15:41:48,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:48,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:48,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:48,996 INFO L87 Difference]: Start difference. First operand 258 states and 386 transitions. Second operand 5 states. [2020-10-13 15:41:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:49,701 INFO L93 Difference]: Finished difference Result 540 states and 816 transitions. [2020-10-13 15:41:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:49,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:41:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:49,703 INFO L225 Difference]: With dead ends: 540 [2020-10-13 15:41:49,703 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 15:41:49,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:41:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 15:41:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 258. [2020-10-13 15:41:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 385 transitions. [2020-10-13 15:41:49,710 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 385 transitions. Word has length 107 [2020-10-13 15:41:49,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:49,711 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 385 transitions. [2020-10-13 15:41:49,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 385 transitions. [2020-10-13 15:41:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-13 15:41:49,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:49,712 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] [2020-10-13 15:41:49,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 15:41:49,712 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 713843549, now seen corresponding path program 1 times [2020-10-13 15:41:49,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:49,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077171299] [2020-10-13 15:41:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:49,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:49,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:54,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 15:41:54,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:41:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:41:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:54,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:41:54,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:54,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:54,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:54,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:54,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:54,820 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 15:41:54,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077171299] [2020-10-13 15:41:54,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:54,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:54,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999667460] [2020-10-13 15:41:54,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:54,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:54,821 INFO L87 Difference]: Start difference. First operand 258 states and 385 transitions. Second operand 5 states. [2020-10-13 15:41:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:55,429 INFO L93 Difference]: Finished difference Result 503 states and 759 transitions. [2020-10-13 15:41:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:55,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-13 15:41:55,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:55,431 INFO L225 Difference]: With dead ends: 503 [2020-10-13 15:41:55,431 INFO L226 Difference]: Without dead ends: 270 [2020-10-13 15:41:55,432 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 15:41:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-13 15:41:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2020-10-13 15:41:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 384 transitions. [2020-10-13 15:41:55,438 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 384 transitions. Word has length 107 [2020-10-13 15:41:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:55,438 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 384 transitions. [2020-10-13 15:41:55,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 384 transitions. [2020-10-13 15:41:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:41:55,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:55,440 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] [2020-10-13 15:41:55,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 15:41:55,440 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:55,440 INFO L82 PathProgramCache]: Analyzing trace with hash -336384841, now seen corresponding path program 1 times [2020-10-13 15:41:55,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:55,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911307067] [2020-10-13 15:41:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:41:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-13 15:41:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 15:41:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:56,848 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 15:41:56,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911307067] [2020-10-13 15:41:56,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:56,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:56,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367528370] [2020-10-13 15:41:56,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:56,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:56,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:56,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:56,849 INFO L87 Difference]: Start difference. First operand 258 states and 384 transitions. Second operand 5 states. [2020-10-13 15:41:57,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:57,607 INFO L93 Difference]: Finished difference Result 540 states and 812 transitions. [2020-10-13 15:41:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:57,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:41:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:57,610 INFO L225 Difference]: With dead ends: 540 [2020-10-13 15:41:57,610 INFO L226 Difference]: Without dead ends: 307 [2020-10-13 15:41:57,611 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 15:41:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-13 15:41:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 258. [2020-10-13 15:41:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-13 15:41:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 383 transitions. [2020-10-13 15:41:57,616 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 383 transitions. Word has length 111 [2020-10-13 15:41:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:57,617 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 383 transitions. [2020-10-13 15:41:57,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 383 transitions. [2020-10-13 15:41:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 15:41:57,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:57,618 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] [2020-10-13 15:41:57,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 15:41:57,618 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash -390777739, now seen corresponding path program 1 times [2020-10-13 15:41:57,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:57,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327309771] [2020-10-13 15:41:57,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:57,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:41:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:58,051 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 15:41:58,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327309771] [2020-10-13 15:41:58,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:58,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:58,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924353217] [2020-10-13 15:41:58,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:58,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:58,053 INFO L87 Difference]: Start difference. First operand 258 states and 383 transitions. Second operand 5 states. [2020-10-13 15:41:58,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:41:58,695 INFO L93 Difference]: Finished difference Result 554 states and 833 transitions. [2020-10-13 15:41:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:41:58,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 15:41:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:41:58,698 INFO L225 Difference]: With dead ends: 554 [2020-10-13 15:41:58,698 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 15:41:58,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:41:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 15:41:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 284. [2020-10-13 15:41:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-13 15:41:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 429 transitions. [2020-10-13 15:41:58,705 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 429 transitions. Word has length 111 [2020-10-13 15:41:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:41:58,705 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 429 transitions. [2020-10-13 15:41:58,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:41:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 429 transitions. [2020-10-13 15:41:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 15:41:58,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:41:58,707 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:41:58,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 15:41:58,707 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:41:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:41:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash 207853101, now seen corresponding path program 1 times [2020-10-13 15:41:58,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:41:58,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718317871] [2020-10-13 15:41:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:41:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:58,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:59,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:59,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 15:41:59,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:41:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1152 [2020-10-13 15:41:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:41:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:41:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:41:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:59,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:41:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:41:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:41:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:41:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:41:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:41:59,948 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 15:41:59,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718317871] [2020-10-13 15:41:59,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:41:59,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:41:59,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831936654] [2020-10-13 15:41:59,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:41:59,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:41:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:41:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:41:59,950 INFO L87 Difference]: Start difference. First operand 284 states and 429 transitions. Second operand 5 states. [2020-10-13 15:42:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:00,683 INFO L93 Difference]: Finished difference Result 592 states and 902 transitions. [2020-10-13 15:42:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:00,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 15:42:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:00,686 INFO L225 Difference]: With dead ends: 592 [2020-10-13 15:42:00,686 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 15:42:00,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:42:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 15:42:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 284. [2020-10-13 15:42:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-13 15:42:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 428 transitions. [2020-10-13 15:42:00,692 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 428 transitions. Word has length 114 [2020-10-13 15:42:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:00,693 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 428 transitions. [2020-10-13 15:42:00,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 428 transitions. [2020-10-13 15:42:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 15:42:00,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:00,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:00,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 15:42:00,694 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash -175664584, now seen corresponding path program 1 times [2020-10-13 15:42:00,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:00,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702478695] [2020-10-13 15:42:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:00,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 15:42:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:42:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:42:01,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702478695] [2020-10-13 15:42:01,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:01,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:01,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030425917] [2020-10-13 15:42:01,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:01,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:01,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:01,893 INFO L87 Difference]: Start difference. First operand 284 states and 428 transitions. Second operand 5 states. [2020-10-13 15:42:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:02,676 INFO L93 Difference]: Finished difference Result 620 states and 946 transitions. [2020-10-13 15:42:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:02,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 15:42:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:02,679 INFO L225 Difference]: With dead ends: 620 [2020-10-13 15:42:02,679 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:42:02,679 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 15:42:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:42:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 314. [2020-10-13 15:42:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 482 transitions. [2020-10-13 15:42:02,685 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 482 transitions. Word has length 115 [2020-10-13 15:42:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:02,686 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 482 transitions. [2020-10-13 15:42:02,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 482 transitions. [2020-10-13 15:42:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 15:42:02,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:02,687 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] [2020-10-13 15:42:02,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 15:42:02,687 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:02,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1559621581, now seen corresponding path program 1 times [2020-10-13 15:42:02,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:02,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516189109] [2020-10-13 15:42:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:02,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:03,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:03,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 15:42:03,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1160 [2020-10-13 15:42:03,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:03,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:42:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:03,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:03,933 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 15:42:03,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516189109] [2020-10-13 15:42:03,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:03,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:03,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324377054] [2020-10-13 15:42:03,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:03,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:03,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:03,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:03,935 INFO L87 Difference]: Start difference. First operand 314 states and 482 transitions. Second operand 5 states. [2020-10-13 15:42:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:04,651 INFO L93 Difference]: Finished difference Result 652 states and 1008 transitions. [2020-10-13 15:42:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:04,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 15:42:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:04,654 INFO L225 Difference]: With dead ends: 652 [2020-10-13 15:42:04,654 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:42:04,654 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 15:42:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:42:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 314. [2020-10-13 15:42:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 481 transitions. [2020-10-13 15:42:04,660 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 481 transitions. Word has length 116 [2020-10-13 15:42:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:04,660 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 481 transitions. [2020-10-13 15:42:04,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 481 transitions. [2020-10-13 15:42:04,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:42:04,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:04,662 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] [2020-10-13 15:42:04,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 15:42:04,662 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:04,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125054, now seen corresponding path program 1 times [2020-10-13 15:42:04,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:04,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783594707] [2020-10-13 15:42:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:09,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 15:42:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:09,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:09,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:09,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:09,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:09,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:09,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:09,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:09,752 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 15:42:09,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783594707] [2020-10-13 15:42:09,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:09,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:09,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250383993] [2020-10-13 15:42:09,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:09,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:09,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:09,753 INFO L87 Difference]: Start difference. First operand 314 states and 481 transitions. Second operand 5 states. [2020-10-13 15:42:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:10,489 INFO L93 Difference]: Finished difference Result 652 states and 1006 transitions. [2020-10-13 15:42:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:10,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:42:10,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:10,492 INFO L225 Difference]: With dead ends: 652 [2020-10-13 15:42:10,492 INFO L226 Difference]: Without dead ends: 363 [2020-10-13 15:42:10,492 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 15:42:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-13 15:42:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 314. [2020-10-13 15:42:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 480 transitions. [2020-10-13 15:42:10,499 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 480 transitions. Word has length 117 [2020-10-13 15:42:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:10,500 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 480 transitions. [2020-10-13 15:42:10,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 480 transitions. [2020-10-13 15:42:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 15:42:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:10,501 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] [2020-10-13 15:42:10,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 15:42:10,501 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash -705671752, now seen corresponding path program 1 times [2020-10-13 15:42:10,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:10,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598490747] [2020-10-13 15:42:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:10,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:11,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:11,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:11,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 15:42:11,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1154 [2020-10-13 15:42:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:42:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:11,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 15:42:11,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598490747] [2020-10-13 15:42:11,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:11,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:11,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243513358] [2020-10-13 15:42:11,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:11,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:11,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:11,759 INFO L87 Difference]: Start difference. First operand 314 states and 480 transitions. Second operand 5 states. [2020-10-13 15:42:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:12,477 INFO L93 Difference]: Finished difference Result 650 states and 1002 transitions. [2020-10-13 15:42:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:12,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 15:42:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:12,480 INFO L225 Difference]: With dead ends: 650 [2020-10-13 15:42:12,481 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:42:12,481 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 15:42:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:42:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 314. [2020-10-13 15:42:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 479 transitions. [2020-10-13 15:42:12,487 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 479 transitions. Word has length 117 [2020-10-13 15:42:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:12,488 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 479 transitions. [2020-10-13 15:42:12,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 479 transitions. [2020-10-13 15:42:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:42:12,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:12,489 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] [2020-10-13 15:42:12,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 15:42:12,489 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1607465033, now seen corresponding path program 1 times [2020-10-13 15:42:12,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:12,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567897964] [2020-10-13 15:42:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:17,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:42:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:17,591 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 15:42:17,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567897964] [2020-10-13 15:42:17,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:17,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:17,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26430179] [2020-10-13 15:42:17,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:17,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:17,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:17,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:17,592 INFO L87 Difference]: Start difference. First operand 314 states and 479 transitions. Second operand 5 states. [2020-10-13 15:42:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:18,302 INFO L93 Difference]: Finished difference Result 648 states and 997 transitions. [2020-10-13 15:42:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:18,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:42:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:18,305 INFO L225 Difference]: With dead ends: 648 [2020-10-13 15:42:18,305 INFO L226 Difference]: Without dead ends: 359 [2020-10-13 15:42:18,306 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 15:42:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-13 15:42:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 314. [2020-10-13 15:42:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 478 transitions. [2020-10-13 15:42:18,312 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 478 transitions. Word has length 118 [2020-10-13 15:42:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:18,312 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 478 transitions. [2020-10-13 15:42:18,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 478 transitions. [2020-10-13 15:42:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 15:42:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:18,313 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] [2020-10-13 15:42:18,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 15:42:18,314 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1862379537, now seen corresponding path program 1 times [2020-10-13 15:42:18,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:18,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663632762] [2020-10-13 15:42:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:18,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:18,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:18,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 15:42:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:42:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:18,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:18,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:18,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:18,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:18,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:18,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:18,688 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 15:42:18,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663632762] [2020-10-13 15:42:18,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:18,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:18,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517241733] [2020-10-13 15:42:18,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:18,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:18,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:18,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:18,689 INFO L87 Difference]: Start difference. First operand 314 states and 478 transitions. Second operand 5 states. [2020-10-13 15:42:19,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:19,399 INFO L93 Difference]: Finished difference Result 645 states and 991 transitions. [2020-10-13 15:42:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:19,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 15:42:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:19,402 INFO L225 Difference]: With dead ends: 645 [2020-10-13 15:42:19,402 INFO L226 Difference]: Without dead ends: 356 [2020-10-13 15:42:19,403 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 15:42:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-13 15:42:19,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 314. [2020-10-13 15:42:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 477 transitions. [2020-10-13 15:42:19,409 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 477 transitions. Word has length 118 [2020-10-13 15:42:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:19,409 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 477 transitions. [2020-10-13 15:42:19,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 477 transitions. [2020-10-13 15:42:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:42:19,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:19,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:19,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 15:42:19,410 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1751295267, now seen corresponding path program 1 times [2020-10-13 15:42:19,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:19,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010931840] [2020-10-13 15:42:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:19,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:21,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:23,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4085 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:42:23,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:23,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:23,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:23,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:23,585 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 15:42:23,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010931840] [2020-10-13 15:42:23,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:23,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:23,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973451691] [2020-10-13 15:42:23,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:23,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:23,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:23,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:23,587 INFO L87 Difference]: Start difference. First operand 314 states and 477 transitions. Second operand 5 states. [2020-10-13 15:42:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:24,255 INFO L93 Difference]: Finished difference Result 637 states and 976 transitions. [2020-10-13 15:42:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:24,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:42:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:24,258 INFO L225 Difference]: With dead ends: 637 [2020-10-13 15:42:24,259 INFO L226 Difference]: Without dead ends: 348 [2020-10-13 15:42:24,259 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 15:42:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-13 15:42:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 314. [2020-10-13 15:42:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-13 15:42:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 476 transitions. [2020-10-13 15:42:24,264 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 476 transitions. Word has length 121 [2020-10-13 15:42:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:24,264 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 476 transitions. [2020-10-13 15:42:24,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 476 transitions. [2020-10-13 15:42:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:42:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:24,265 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 15:42:24,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 15:42:24,266 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1348874590, now seen corresponding path program 1 times [2020-10-13 15:42:24,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:24,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030161038] [2020-10-13 15:42:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:25,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 15:42:25,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:25,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-13 15:42:25,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 15:42:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 15:42:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:25,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:25,438 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 15:42:25,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030161038] [2020-10-13 15:42:25,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:25,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:25,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067644814] [2020-10-13 15:42:25,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:25,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:25,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:25,439 INFO L87 Difference]: Start difference. First operand 314 states and 476 transitions. Second operand 5 states. [2020-10-13 15:42:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:26,084 INFO L93 Difference]: Finished difference Result 650 states and 993 transitions. [2020-10-13 15:42:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:26,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 15:42:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:26,087 INFO L225 Difference]: With dead ends: 650 [2020-10-13 15:42:26,087 INFO L226 Difference]: Without dead ends: 361 [2020-10-13 15:42:26,088 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 15:42:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-13 15:42:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 335. [2020-10-13 15:42:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 15:42:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 512 transitions. [2020-10-13 15:42:26,093 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 512 transitions. Word has length 121 [2020-10-13 15:42:26,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:26,094 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 512 transitions. [2020-10-13 15:42:26,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 512 transitions. [2020-10-13 15:42:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 15:42:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:26,095 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 15:42:26,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 15:42:26,095 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:26,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:26,095 INFO L82 PathProgramCache]: Analyzing trace with hash -549411747, now seen corresponding path program 1 times [2020-10-13 15:42:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:26,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750285257] [2020-10-13 15:42:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:27,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 15:42:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:27,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:27,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:27,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:27,096 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 15:42:27,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750285257] [2020-10-13 15:42:27,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:27,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:27,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301943404] [2020-10-13 15:42:27,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:27,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:27,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:27,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:27,098 INFO L87 Difference]: Start difference. First operand 335 states and 512 transitions. Second operand 5 states. [2020-10-13 15:42:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:27,783 INFO L93 Difference]: Finished difference Result 679 states and 1046 transitions. [2020-10-13 15:42:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:27,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 15:42:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:27,786 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:42:27,786 INFO L226 Difference]: Without dead ends: 369 [2020-10-13 15:42:27,787 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 15:42:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-13 15:42:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 335. [2020-10-13 15:42:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 15:42:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 511 transitions. [2020-10-13 15:42:27,792 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 511 transitions. Word has length 122 [2020-10-13 15:42:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:27,793 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 511 transitions. [2020-10-13 15:42:27,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 511 transitions. [2020-10-13 15:42:27,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:42:27,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:27,794 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:27,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 15:42:27,794 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1025921096, now seen corresponding path program 1 times [2020-10-13 15:42:27,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:27,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653957579] [2020-10-13 15:42:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:27,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:28,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:42:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-13 15:42:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:42:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:29,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:29,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:29,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:29,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:29,511 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 15:42:29,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653957579] [2020-10-13 15:42:29,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:29,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:29,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183718867] [2020-10-13 15:42:29,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:29,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:29,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:29,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:29,512 INFO L87 Difference]: Start difference. First operand 335 states and 511 transitions. Second operand 5 states. [2020-10-13 15:42:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:30,188 INFO L93 Difference]: Finished difference Result 679 states and 1044 transitions. [2020-10-13 15:42:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:30,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:42:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:30,191 INFO L225 Difference]: With dead ends: 679 [2020-10-13 15:42:30,191 INFO L226 Difference]: Without dead ends: 369 [2020-10-13 15:42:30,192 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 15:42:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-13 15:42:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 335. [2020-10-13 15:42:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-10-13 15:42:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 510 transitions. [2020-10-13 15:42:30,197 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 510 transitions. Word has length 123 [2020-10-13 15:42:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:30,197 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 510 transitions. [2020-10-13 15:42:30,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 510 transitions. [2020-10-13 15:42:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:42:30,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:30,198 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 15:42:30,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 15:42:30,199 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:30,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1191783971, now seen corresponding path program 1 times [2020-10-13 15:42:30,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:30,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508035648] [2020-10-13 15:42:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 15:42:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:42:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:31,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:31,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:31,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:31,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:31,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:31,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:31,241 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 15:42:31,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508035648] [2020-10-13 15:42:31,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:31,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:31,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028223362] [2020-10-13 15:42:31,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:31,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:31,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:31,242 INFO L87 Difference]: Start difference. First operand 335 states and 510 transitions. Second operand 5 states. [2020-10-13 15:42:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:32,098 INFO L93 Difference]: Finished difference Result 744 states and 1145 transitions. [2020-10-13 15:42:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:32,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 15:42:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:32,100 INFO L225 Difference]: With dead ends: 744 [2020-10-13 15:42:32,100 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 15:42:32,101 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 15:42:32,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 15:42:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 372. [2020-10-13 15:42:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 15:42:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 578 transitions. [2020-10-13 15:42:32,107 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 578 transitions. Word has length 123 [2020-10-13 15:42:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:32,107 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 578 transitions. [2020-10-13 15:42:32,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 578 transitions. [2020-10-13 15:42:32,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:42:32,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:32,108 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 15:42:32,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 15:42:32,108 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:32,108 INFO L82 PathProgramCache]: Analyzing trace with hash -813142683, now seen corresponding path program 1 times [2020-10-13 15:42:32,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:32,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273402256] [2020-10-13 15:42:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:42:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-13 15:42:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:42:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:32,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:32,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:32,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:32,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:32,514 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 15:42:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273402256] [2020-10-13 15:42:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:32,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:32,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142297988] [2020-10-13 15:42:32,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:32,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:32,515 INFO L87 Difference]: Start difference. First operand 372 states and 578 transitions. Second operand 5 states. [2020-10-13 15:42:33,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:33,203 INFO L93 Difference]: Finished difference Result 753 states and 1178 transitions. [2020-10-13 15:42:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:33,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:42:33,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:33,207 INFO L225 Difference]: With dead ends: 753 [2020-10-13 15:42:33,207 INFO L226 Difference]: Without dead ends: 406 [2020-10-13 15:42:33,208 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 15:42:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-13 15:42:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 372. [2020-10-13 15:42:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-13 15:42:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 577 transitions. [2020-10-13 15:42:33,214 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 577 transitions. Word has length 124 [2020-10-13 15:42:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:33,215 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 577 transitions. [2020-10-13 15:42:33,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 577 transitions. [2020-10-13 15:42:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:42:33,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:33,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 15:42:33,216 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash 703950498, now seen corresponding path program 1 times [2020-10-13 15:42:33,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:33,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82061863] [2020-10-13 15:42:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:33,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:33,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:42:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1609 [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 15:42:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:34,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:34,908 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 15:42:34,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82061863] [2020-10-13 15:42:34,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:34,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:34,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394370320] [2020-10-13 15:42:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:34,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:34,910 INFO L87 Difference]: Start difference. First operand 372 states and 577 transitions. Second operand 5 states. [2020-10-13 15:42:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:35,789 INFO L93 Difference]: Finished difference Result 813 states and 1271 transitions. [2020-10-13 15:42:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:35,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:42:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:35,792 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:42:35,792 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 15:42:35,793 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 15:42:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 15:42:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 407. [2020-10-13 15:42:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 641 transitions. [2020-10-13 15:42:35,801 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 641 transitions. Word has length 124 [2020-10-13 15:42:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:35,801 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 641 transitions. [2020-10-13 15:42:35,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 641 transitions. [2020-10-13 15:42:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 15:42:35,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:35,802 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:35,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 15:42:35,803 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:35,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:35,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1379437758, now seen corresponding path program 1 times [2020-10-13 15:42:35,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:35,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869083213] [2020-10-13 15:42:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:36,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:42:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:36,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:36,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:36,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:42:36,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869083213] [2020-10-13 15:42:36,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:36,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:36,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511766455] [2020-10-13 15:42:36,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:36,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:36,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:36,918 INFO L87 Difference]: Start difference. First operand 407 states and 641 transitions. Second operand 5 states. [2020-10-13 15:42:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:37,574 INFO L93 Difference]: Finished difference Result 826 states and 1302 transitions. [2020-10-13 15:42:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:37,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 15:42:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:37,576 INFO L225 Difference]: With dead ends: 826 [2020-10-13 15:42:37,577 INFO L226 Difference]: Without dead ends: 444 [2020-10-13 15:42:37,578 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 15:42:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-13 15:42:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 407. [2020-10-13 15:42:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 640 transitions. [2020-10-13 15:42:37,584 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 640 transitions. Word has length 124 [2020-10-13 15:42:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:37,584 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 640 transitions. [2020-10-13 15:42:37,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 640 transitions. [2020-10-13 15:42:37,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:42:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:37,585 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 15:42:37,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 15:42:37,586 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash 991394059, now seen corresponding path program 1 times [2020-10-13 15:42:37,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:37,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221871827] [2020-10-13 15:42:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:37,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:42:37,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:37,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 15:42:37,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:42:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 15:42:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 15:42:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:37,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:37,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:37,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:38,008 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 15:42:38,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221871827] [2020-10-13 15:42:38,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:38,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:38,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139373868] [2020-10-13 15:42:38,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:38,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:38,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:38,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:38,009 INFO L87 Difference]: Start difference. First operand 407 states and 640 transitions. Second operand 5 states. [2020-10-13 15:42:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:38,708 INFO L93 Difference]: Finished difference Result 820 states and 1298 transitions. [2020-10-13 15:42:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:38,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:42:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:38,711 INFO L225 Difference]: With dead ends: 820 [2020-10-13 15:42:38,711 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 15:42:38,711 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 15:42:38,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 15:42:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 407. [2020-10-13 15:42:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 639 transitions. [2020-10-13 15:42:38,717 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 639 transitions. Word has length 125 [2020-10-13 15:42:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:38,718 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 639 transitions. [2020-10-13 15:42:38,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 639 transitions. [2020-10-13 15:42:38,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:42:38,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:38,719 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] [2020-10-13 15:42:38,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 15:42:38,719 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash 973916102, now seen corresponding path program 1 times [2020-10-13 15:42:38,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:38,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502243242] [2020-10-13 15:42:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:41,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:43,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:42:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:43,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:43,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:43,819 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 15:42:43,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502243242] [2020-10-13 15:42:43,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:43,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:43,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369969852] [2020-10-13 15:42:43,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:43,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:43,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:43,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:43,821 INFO L87 Difference]: Start difference. First operand 407 states and 639 transitions. Second operand 5 states. [2020-10-13 15:42:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:44,483 INFO L93 Difference]: Finished difference Result 816 states and 1285 transitions. [2020-10-13 15:42:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:44,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:42:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:44,486 INFO L225 Difference]: With dead ends: 816 [2020-10-13 15:42:44,487 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 15:42:44,487 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 15:42:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 15:42:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 407. [2020-10-13 15:42:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 638 transitions. [2020-10-13 15:42:44,494 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 638 transitions. Word has length 125 [2020-10-13 15:42:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:44,494 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 638 transitions. [2020-10-13 15:42:44,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 638 transitions. [2020-10-13 15:42:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:42:44,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:44,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:42:44,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 15:42:44,496 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1910548957, now seen corresponding path program 1 times [2020-10-13 15:42:44,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:44,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836793553] [2020-10-13 15:42:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:45,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:42:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:45,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:45,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:42:45,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836793553] [2020-10-13 15:42:45,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:45,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:45,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465314072] [2020-10-13 15:42:45,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:45,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:45,923 INFO L87 Difference]: Start difference. First operand 407 states and 638 transitions. Second operand 5 states. [2020-10-13 15:42:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:46,575 INFO L93 Difference]: Finished difference Result 814 states and 1281 transitions. [2020-10-13 15:42:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:46,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:42:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:46,582 INFO L225 Difference]: With dead ends: 814 [2020-10-13 15:42:46,583 INFO L226 Difference]: Without dead ends: 432 [2020-10-13 15:42:46,583 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 15:42:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-13 15:42:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 407. [2020-10-13 15:42:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 637 transitions. [2020-10-13 15:42:46,592 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 637 transitions. Word has length 125 [2020-10-13 15:42:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:46,593 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 637 transitions. [2020-10-13 15:42:46,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 637 transitions. [2020-10-13 15:42:46,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 15:42:46,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:46,594 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] [2020-10-13 15:42:46,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 15:42:46,594 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:46,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:46,595 INFO L82 PathProgramCache]: Analyzing trace with hash -290058308, now seen corresponding path program 1 times [2020-10-13 15:42:46,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:46,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109552720] [2020-10-13 15:42:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:42:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:42:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-13 15:42:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:42:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:47,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:47,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:47,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:42:47,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:47,382 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 15:42:47,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109552720] [2020-10-13 15:42:47,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:47,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:47,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129515297] [2020-10-13 15:42:47,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:47,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:47,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:47,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:47,383 INFO L87 Difference]: Start difference. First operand 407 states and 637 transitions. Second operand 5 states. [2020-10-13 15:42:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:48,030 INFO L93 Difference]: Finished difference Result 813 states and 1278 transitions. [2020-10-13 15:42:48,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:48,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-13 15:42:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:48,033 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:42:48,033 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 15:42:48,034 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 15:42:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 15:42:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 407. [2020-10-13 15:42:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 636 transitions. [2020-10-13 15:42:48,040 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 636 transitions. Word has length 125 [2020-10-13 15:42:48,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:48,040 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 636 transitions. [2020-10-13 15:42:48,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:48,040 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 636 transitions. [2020-10-13 15:42:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 15:42:48,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:48,041 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] [2020-10-13 15:42:48,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 15:42:48,041 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:48,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2120684327, now seen corresponding path program 1 times [2020-10-13 15:42:48,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:48,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118005675] [2020-10-13 15:42:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:53,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:42:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:53,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:53,119 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 15:42:53,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118005675] [2020-10-13 15:42:53,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:53,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:53,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270328524] [2020-10-13 15:42:53,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:53,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:53,121 INFO L87 Difference]: Start difference. First operand 407 states and 636 transitions. Second operand 5 states. [2020-10-13 15:42:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:53,780 INFO L93 Difference]: Finished difference Result 813 states and 1276 transitions. [2020-10-13 15:42:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:53,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-13 15:42:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:53,783 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:42:53,783 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 15:42:53,784 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 15:42:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 15:42:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 407. [2020-10-13 15:42:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 635 transitions. [2020-10-13 15:42:53,791 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 635 transitions. Word has length 126 [2020-10-13 15:42:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:53,791 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 635 transitions. [2020-10-13 15:42:53,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 635 transitions. [2020-10-13 15:42:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 15:42:53,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:53,792 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] [2020-10-13 15:42:53,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 15:42:53,793 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1875143230, now seen corresponding path program 1 times [2020-10-13 15:42:53,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:53,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127784878] [2020-10-13 15:42:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:53,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:56,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:58,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:58,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:42:58,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:58,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:42:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:42:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:42:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:42:58,886 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 15:42:58,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127784878] [2020-10-13 15:42:58,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:42:58,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:42:58,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67892822] [2020-10-13 15:42:58,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:42:58,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:42:58,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:42:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:42:58,888 INFO L87 Difference]: Start difference. First operand 407 states and 635 transitions. Second operand 5 states. [2020-10-13 15:42:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:42:59,550 INFO L93 Difference]: Finished difference Result 813 states and 1274 transitions. [2020-10-13 15:42:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:42:59,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 15:42:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:42:59,554 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:42:59,554 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 15:42:59,555 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 15:42:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 15:42:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 407. [2020-10-13 15:42:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:42:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 634 transitions. [2020-10-13 15:42:59,561 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 634 transitions. Word has length 127 [2020-10-13 15:42:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:42:59,561 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 634 transitions. [2020-10-13 15:42:59,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:42:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 634 transitions. [2020-10-13 15:42:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:42:59,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:42:59,562 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] [2020-10-13 15:42:59,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 15:42:59,563 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:42:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:42:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1230542708, now seen corresponding path program 1 times [2020-10-13 15:42:59,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:42:59,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293429243] [2020-10-13 15:42:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:42:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:42:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:42:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:43:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:43:04,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:43:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:04,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:04,635 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 15:43:04,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293429243] [2020-10-13 15:43:04,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:04,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:43:04,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022360683] [2020-10-13 15:43:04,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:43:04,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:43:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:43:04,637 INFO L87 Difference]: Start difference. First operand 407 states and 634 transitions. Second operand 5 states. [2020-10-13 15:43:05,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:05,275 INFO L93 Difference]: Finished difference Result 813 states and 1272 transitions. [2020-10-13 15:43:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:43:05,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-13 15:43:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:05,279 INFO L225 Difference]: With dead ends: 813 [2020-10-13 15:43:05,280 INFO L226 Difference]: Without dead ends: 431 [2020-10-13 15:43:05,280 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 15:43:05,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-13 15:43:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 407. [2020-10-13 15:43:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:43:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 633 transitions. [2020-10-13 15:43:05,288 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 633 transitions. Word has length 128 [2020-10-13 15:43:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:05,288 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 633 transitions. [2020-10-13 15:43:05,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:43:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 633 transitions. [2020-10-13 15:43:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:43:05,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:05,289 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] [2020-10-13 15:43:05,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 15:43:05,290 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:05,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:05,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1533407495, now seen corresponding path program 1 times [2020-10-13 15:43:05,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:05,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342647329] [2020-10-13 15:43:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:05,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:05,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:10,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:10,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 15:43:10,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:43:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:10,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:10,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:10,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:10,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:10,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:43:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:10,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:10,381 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 15:43:10,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342647329] [2020-10-13 15:43:10,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:10,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:43:10,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599542250] [2020-10-13 15:43:10,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:43:10,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:10,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:43:10,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:43:10,382 INFO L87 Difference]: Start difference. First operand 407 states and 633 transitions. Second operand 5 states. [2020-10-13 15:43:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:43:10,999 INFO L93 Difference]: Finished difference Result 803 states and 1258 transitions. [2020-10-13 15:43:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:43:11,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-13 15:43:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:43:11,002 INFO L225 Difference]: With dead ends: 803 [2020-10-13 15:43:11,002 INFO L226 Difference]: Without dead ends: 421 [2020-10-13 15:43:11,003 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 15:43:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-13 15:43:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 407. [2020-10-13 15:43:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-13 15:43:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 632 transitions. [2020-10-13 15:43:11,008 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 632 transitions. Word has length 129 [2020-10-13 15:43:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:43:11,009 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 632 transitions. [2020-10-13 15:43:11,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:43:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 632 transitions. [2020-10-13 15:43:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 15:43:11,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:43:11,010 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:43:11,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 15:43:11,010 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:43:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:43:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash 785573547, now seen corresponding path program 1 times [2020-10-13 15:43:11,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:43:11,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206973864] [2020-10-13 15:43:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:43:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:11,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 15:43:11,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:43:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:43:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:43:11,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:43:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:43:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-13 15:43:11,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206973864] [2020-10-13 15:43:11,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:43:11,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:43:11,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009289593] [2020-10-13 15:43:11,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:43:11,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:43:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:43:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:43:11,359 INFO L87 Difference]: Start difference. First operand 407 states and 632 transitions. Second operand 5 states.