/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=BIGGEST --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.10.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:54:52,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:54:52,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:54:52,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:54:52,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:54:52,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:54:52,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:54:52,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:54:52,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:54:52,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:54:52,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:54:52,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:54:52,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:54:52,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:54:52,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:54:52,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:54:52,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:54:52,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:54:52,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:54:52,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:54:52,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:54:52,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:54:52,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:54:52,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:54:52,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:54:52,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:54:52,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:54:52,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:54:52,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:54:52,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:54:52,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:54:52,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:54:52,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:54:52,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:54:52,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:54:52,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:54:52,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:54:52,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:54:52,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:54:52,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:54:52,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:54:52,713 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 [2020-10-12 20:54:52,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:54:52,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:54:52,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:54:52,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:54:52,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:54:52,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:54:52,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:54:52,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:54:52,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:54:52,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:54:52,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:54:52,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:54:52,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:54:52,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:54:52,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:54:52,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:54:52,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:54:52,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:54:52,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:54:52,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:54:52,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:54:52,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:54:52,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:54:52,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:54:52,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:54:52,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:54:52,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:54:52,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:54:52,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:54:52,762 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:54:53,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:54:53,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:54:53,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:54:53,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:54:53,053 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:54:53,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-1.c [2020-10-12 20:54:53,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4fb605a/f6ddcabe628a421ba5ee9868ff7090a1/FLAG5c0771565 [2020-10-12 20:54:53,627 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:54:53,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.10.i.cil-1.c [2020-10-12 20:54:53,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4fb605a/f6ddcabe628a421ba5ee9868ff7090a1/FLAG5c0771565 [2020-10-12 20:54:53,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8e4fb605a/f6ddcabe628a421ba5ee9868ff7090a1 [2020-10-12 20:54:53,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:54:53,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:54:53,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:54:53,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:54:53,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:54:53,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:54:53" (1/1) ... [2020-10-12 20:54:53,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a964ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:53, skipping insertion in model container [2020-10-12 20:54:53,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:54:53" (1/1) ... [2020-10-12 20:54:53,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:54:54,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:54:54,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:54:54,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:54:54,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:54:54,815 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:54:54,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54 WrapperNode [2020-10-12 20:54:54,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:54:54,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:54:54,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:54:54,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:54:54,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (1/1) ... [2020-10-12 20:54:54,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:54:54,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:54:54,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:54:54,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:54:54,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (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 [2020-10-12 20:54:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:54:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:54:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-12 20:54:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-12 20:54:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:54:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-12 20:54:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-12 20:54:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 20:54:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-12 20:54:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:54:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 20:54:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:54:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 20:54:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-12 20:54:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-12 20:54:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-12 20:54:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-12 20:54:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-12 20:54:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-12 20:54:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-12 20:54:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-12 20:54:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 20:54:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:54:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 20:54:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 20:54:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 20:54:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:54:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-12 20:54:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-12 20:54:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-12 20:54:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-12 20:54:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 20:54:55,541 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-12 20:54:56,158 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-12 20:54:56,158 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-12 20:54:56,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:54:56,181 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 20:54:56,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:54:56 BoogieIcfgContainer [2020-10-12 20:54:56,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:54:56,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:54:56,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:54:56,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:54:56,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:54:53" (1/3) ... [2020-10-12 20:54:56,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749801ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:54:56, skipping insertion in model container [2020-10-12 20:54:56,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:54:54" (2/3) ... [2020-10-12 20:54:56,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749801ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:54:56, skipping insertion in model container [2020-10-12 20:54:56,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:54:56" (3/3) ... [2020-10-12 20:54:56,194 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-1.c [2020-10-12 20:54:56,204 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:54:56,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:54:56,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:54:56,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:54:56,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:54:56,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:54:56,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:54:56,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:54:56,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:54:56,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:54:56,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:54:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-10-12 20:54:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 20:54:56,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:56,288 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] [2020-10-12 20:54:56,288 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:56,294 INFO L82 PathProgramCache]: Analyzing trace with hash 882472344, now seen corresponding path program 1 times [2020-10-12 20:54:56,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:56,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390095911] [2020-10-12 20:54:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:56,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 20:54:57,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:54:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-12 20:54:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:54:57,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:54:57,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:54:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:57,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:54:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:54:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:54:57,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:54:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:54:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:54:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:54:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:54:57,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390095911] [2020-10-12 20:54:57,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:54:57,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:54:57,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524125802] [2020-10-12 20:54:57,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:54:57,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:54:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:54:57,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:54:57,489 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 5 states. [2020-10-12 20:54:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:54:58,288 INFO L93 Difference]: Finished difference Result 329 states and 550 transitions. [2020-10-12 20:54:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:54:58,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-12 20:54:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:54:58,307 INFO L225 Difference]: With dead ends: 329 [2020-10-12 20:54:58,307 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:54:58,311 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 [2020-10-12 20:54:58,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:54:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2020-10-12 20:54:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 20:54:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 228 transitions. [2020-10-12 20:54:58,364 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 228 transitions. Word has length 48 [2020-10-12 20:54:58,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:54:58,364 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 228 transitions. [2020-10-12 20:54:58,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:54:58,365 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 228 transitions. [2020-10-12 20:54:58,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 20:54:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:54:58,368 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] [2020-10-12 20:54:58,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:54:58,368 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:54:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:54:58,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1847016255, now seen corresponding path program 1 times [2020-10-12 20:54:58,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:54:58,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253117958] [2020-10-12 20:54:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:54:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:54:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:54:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:54:59,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 20:54:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:54:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-12 20:54:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:54:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:54:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:54:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:54:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:00,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:00,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:00,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:55:00,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:00,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:00,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253117958] [2020-10-12 20:55:00,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:00,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:00,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314445267] [2020-10-12 20:55:00,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:00,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:00,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:00,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:00,112 INFO L87 Difference]: Start difference. First operand 150 states and 228 transitions. Second operand 5 states. [2020-10-12 20:55:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:00,705 INFO L93 Difference]: Finished difference Result 292 states and 441 transitions. [2020-10-12 20:55:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:00,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 20:55:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:00,708 INFO L225 Difference]: With dead ends: 292 [2020-10-12 20:55:00,708 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:55:00,709 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 [2020-10-12 20:55:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:55:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2020-10-12 20:55:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 20:55:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 227 transitions. [2020-10-12 20:55:00,722 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 227 transitions. Word has length 61 [2020-10-12 20:55:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:00,722 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 227 transitions. [2020-10-12 20:55:00,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 227 transitions. [2020-10-12 20:55:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:55:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:00,725 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] [2020-10-12 20:55:00,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:55:00,726 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash 977562343, now seen corresponding path program 1 times [2020-10-12 20:55:00,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:00,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659900066] [2020-10-12 20:55:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:00,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:55:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4456 [2020-10-12 20:55:05,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:55:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:05,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:05,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659900066] [2020-10-12 20:55:05,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:05,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:05,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408904115] [2020-10-12 20:55:05,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:05,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:05,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:05,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:05,311 INFO L87 Difference]: Start difference. First operand 150 states and 227 transitions. Second operand 5 states. [2020-10-12 20:55:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:05,927 INFO L93 Difference]: Finished difference Result 292 states and 440 transitions. [2020-10-12 20:55:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:05,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:55:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:05,930 INFO L225 Difference]: With dead ends: 292 [2020-10-12 20:55:05,930 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 20:55:05,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 20:55:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2020-10-12 20:55:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 20:55:05,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 239 transitions. [2020-10-12 20:55:05,942 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 239 transitions. Word has length 62 [2020-10-12 20:55:05,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:05,942 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 239 transitions. [2020-10-12 20:55:05,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:05,943 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 239 transitions. [2020-10-12 20:55:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:55:05,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:05,945 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] [2020-10-12 20:55:05,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:55:05,945 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:05,946 INFO L82 PathProgramCache]: Analyzing trace with hash 352839358, now seen corresponding path program 1 times [2020-10-12 20:55:05,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:05,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954101869] [2020-10-12 20:55:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:07,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:55:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1072 [2020-10-12 20:55:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:07,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:55:07,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:07,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954101869] [2020-10-12 20:55:07,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:07,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:07,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964672688] [2020-10-12 20:55:07,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:07,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:07,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:07,163 INFO L87 Difference]: Start difference. First operand 160 states and 239 transitions. Second operand 5 states. [2020-10-12 20:55:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:07,773 INFO L93 Difference]: Finished difference Result 290 states and 437 transitions. [2020-10-12 20:55:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:07,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:55:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:07,776 INFO L225 Difference]: With dead ends: 290 [2020-10-12 20:55:07,777 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 20:55:07,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 20:55:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-10-12 20:55:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 20:55:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2020-10-12 20:55:07,793 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 62 [2020-10-12 20:55:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:07,793 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2020-10-12 20:55:07,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2020-10-12 20:55:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 20:55:07,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:07,796 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] [2020-10-12 20:55:07,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:55:07,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash 493566045, now seen corresponding path program 1 times [2020-10-12 20:55:07,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:07,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130007260] [2020-10-12 20:55:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:55:08,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:08,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-12 20:55:08,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:55:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:08,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:08,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130007260] [2020-10-12 20:55:08,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:08,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:08,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266333258] [2020-10-12 20:55:08,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:08,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:08,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:08,305 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand 5 states. [2020-10-12 20:55:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:08,889 INFO L93 Difference]: Finished difference Result 289 states and 435 transitions. [2020-10-12 20:55:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:08,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-12 20:55:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:08,891 INFO L225 Difference]: With dead ends: 289 [2020-10-12 20:55:08,891 INFO L226 Difference]: Without dead ends: 164 [2020-10-12 20:55:08,892 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 [2020-10-12 20:55:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-12 20:55:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160. [2020-10-12 20:55:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-12 20:55:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 237 transitions. [2020-10-12 20:55:08,899 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 237 transitions. Word has length 62 [2020-10-12 20:55:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:08,899 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 237 transitions. [2020-10-12 20:55:08,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 237 transitions. [2020-10-12 20:55:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 20:55:08,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:08,900 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] [2020-10-12 20:55:08,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:55:08,901 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1349453744, now seen corresponding path program 1 times [2020-10-12 20:55:08,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:08,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846140997] [2020-10-12 20:55:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:55:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:55:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:55:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:55:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:55:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:14,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:14,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:14,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:14,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846140997] [2020-10-12 20:55:14,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:55:14,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 20:55:14,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675863947] [2020-10-12 20:55:14,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:55:14,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:55:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:55:14,113 INFO L87 Difference]: Start difference. First operand 160 states and 237 transitions. Second operand 8 states. [2020-10-12 20:55:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:15,505 INFO L93 Difference]: Finished difference Result 432 states and 653 transitions. [2020-10-12 20:55:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:55:15,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-12 20:55:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:15,511 INFO L225 Difference]: With dead ends: 432 [2020-10-12 20:55:15,511 INFO L226 Difference]: Without dead ends: 307 [2020-10-12 20:55:15,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:55:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-12 20:55:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 260. [2020-10-12 20:55:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-12 20:55:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 397 transitions. [2020-10-12 20:55:15,536 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 397 transitions. Word has length 63 [2020-10-12 20:55:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:15,537 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 397 transitions. [2020-10-12 20:55:15,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:55:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 397 transitions. [2020-10-12 20:55:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:55:15,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:15,539 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] [2020-10-12 20:55:15,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:55:15,539 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash -162660152, now seen corresponding path program 1 times [2020-10-12 20:55:15,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:15,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727024760] [2020-10-12 20:55:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:55:15,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 20:55:15,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:15,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:15,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 20:55:15,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:15,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:15,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:15,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:15,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:55:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:16,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727024760] [2020-10-12 20:55:16,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:16,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:16,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603030655] [2020-10-12 20:55:16,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:16,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:16,019 INFO L87 Difference]: Start difference. First operand 260 states and 397 transitions. Second operand 5 states. [2020-10-12 20:55:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:16,694 INFO L93 Difference]: Finished difference Result 569 states and 879 transitions. [2020-10-12 20:55:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:16,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:55:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:16,699 INFO L225 Difference]: With dead ends: 569 [2020-10-12 20:55:16,699 INFO L226 Difference]: Without dead ends: 344 [2020-10-12 20:55:16,700 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 [2020-10-12 20:55:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-12 20:55:16,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 304. [2020-10-12 20:55:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-12 20:55:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 473 transitions. [2020-10-12 20:55:16,713 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 473 transitions. Word has length 65 [2020-10-12 20:55:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:16,713 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 473 transitions. [2020-10-12 20:55:16,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 473 transitions. [2020-10-12 20:55:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 20:55:16,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:16,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:16,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:55:16,715 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1270094969, now seen corresponding path program 1 times [2020-10-12 20:55:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:16,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761635946] [2020-10-12 20:55:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:16,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:55:21,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:55:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:21,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:21,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:21,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:21,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:55:21,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:21,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:21,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:21,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 20:55:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:21,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761635946] [2020-10-12 20:55:21,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:21,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:55:21,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254001526] [2020-10-12 20:55:21,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:55:21,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:21,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:55:21,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:21,927 INFO L87 Difference]: Start difference. First operand 304 states and 473 transitions. Second operand 6 states. [2020-10-12 20:55:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:22,566 INFO L93 Difference]: Finished difference Result 498 states and 771 transitions. [2020-10-12 20:55:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:55:22,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-12 20:55:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:22,570 INFO L225 Difference]: With dead ends: 498 [2020-10-12 20:55:22,570 INFO L226 Difference]: Without dead ends: 321 [2020-10-12 20:55:22,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:55:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-12 20:55:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 311. [2020-10-12 20:55:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 20:55:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 481 transitions. [2020-10-12 20:55:22,587 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 481 transitions. Word has length 76 [2020-10-12 20:55:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:22,587 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 481 transitions. [2020-10-12 20:55:22,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:55:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 481 transitions. [2020-10-12 20:55:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 20:55:22,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:22,589 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:55:22,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:55:22,589 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash 716314483, now seen corresponding path program 1 times [2020-10-12 20:55:22,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:22,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929808991] [2020-10-12 20:55:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4245 [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:26,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:55:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:26,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:26,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:26,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:26,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:26,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929808991] [2020-10-12 20:55:26,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:26,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046710492] [2020-10-12 20:55:26,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:26,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:26,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:26,930 INFO L87 Difference]: Start difference. First operand 311 states and 481 transitions. Second operand 5 states. [2020-10-12 20:55:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:27,712 INFO L93 Difference]: Finished difference Result 500 states and 771 transitions. [2020-10-12 20:55:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:27,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 76 [2020-10-12 20:55:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:27,717 INFO L225 Difference]: With dead ends: 500 [2020-10-12 20:55:27,717 INFO L226 Difference]: Without dead ends: 315 [2020-10-12 20:55:27,718 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 [2020-10-12 20:55:27,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-12 20:55:27,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2020-10-12 20:55:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 20:55:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 480 transitions. [2020-10-12 20:55:27,761 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 480 transitions. Word has length 76 [2020-10-12 20:55:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:27,761 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 480 transitions. [2020-10-12 20:55:27,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 480 transitions. [2020-10-12 20:55:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 20:55:27,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:27,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:27,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:55:27,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1177608020, now seen corresponding path program 1 times [2020-10-12 20:55:27,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:27,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873170374] [2020-10-12 20:55:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:55:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:31,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:31,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:31,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:31,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:31,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:31,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:31,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:31,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873170374] [2020-10-12 20:55:31,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:31,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:31,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84641220] [2020-10-12 20:55:31,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:31,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:31,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:31,974 INFO L87 Difference]: Start difference. First operand 311 states and 480 transitions. Second operand 5 states. [2020-10-12 20:55:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:32,739 INFO L93 Difference]: Finished difference Result 500 states and 770 transitions. [2020-10-12 20:55:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:32,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-12 20:55:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:32,743 INFO L225 Difference]: With dead ends: 500 [2020-10-12 20:55:32,743 INFO L226 Difference]: Without dead ends: 315 [2020-10-12 20:55:32,744 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 [2020-10-12 20:55:32,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-12 20:55:32,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2020-10-12 20:55:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 20:55:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 479 transitions. [2020-10-12 20:55:32,760 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 479 transitions. Word has length 77 [2020-10-12 20:55:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:32,760 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 479 transitions. [2020-10-12 20:55:32,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 479 transitions. [2020-10-12 20:55:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:55:32,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:32,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:32,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:55:32,764 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:32,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1197601682, now seen corresponding path program 1 times [2020-10-12 20:55:32,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:32,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382103539] [2020-10-12 20:55:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:55:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3555 [2020-10-12 20:55:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:55:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:36,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:36,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:36,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382103539] [2020-10-12 20:55:36,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:36,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:36,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456524441] [2020-10-12 20:55:36,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:36,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:36,410 INFO L87 Difference]: Start difference. First operand 311 states and 479 transitions. Second operand 5 states. [2020-10-12 20:55:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:37,016 INFO L93 Difference]: Finished difference Result 500 states and 769 transitions. [2020-10-12 20:55:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:37,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:55:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:37,020 INFO L225 Difference]: With dead ends: 500 [2020-10-12 20:55:37,020 INFO L226 Difference]: Without dead ends: 315 [2020-10-12 20:55:37,021 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 [2020-10-12 20:55:37,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-12 20:55:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2020-10-12 20:55:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 20:55:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 478 transitions. [2020-10-12 20:55:37,031 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 478 transitions. Word has length 78 [2020-10-12 20:55:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:37,032 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 478 transitions. [2020-10-12 20:55:37,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 478 transitions. [2020-10-12 20:55:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 20:55:37,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:37,033 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] [2020-10-12 20:55:37,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:55:37,034 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:37,034 INFO L82 PathProgramCache]: Analyzing trace with hash -688759281, now seen corresponding path program 1 times [2020-10-12 20:55:37,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:37,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358775237] [2020-10-12 20:55:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:37,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 20:55:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-12 20:55:37,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:55:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:37,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:55:37,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:37,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358775237] [2020-10-12 20:55:37,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:37,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:37,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145012774] [2020-10-12 20:55:37,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:37,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:37,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:37,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:37,898 INFO L87 Difference]: Start difference. First operand 311 states and 478 transitions. Second operand 5 states. [2020-10-12 20:55:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:38,505 INFO L93 Difference]: Finished difference Result 515 states and 781 transitions. [2020-10-12 20:55:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:38,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 20:55:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:38,509 INFO L225 Difference]: With dead ends: 515 [2020-10-12 20:55:38,509 INFO L226 Difference]: Without dead ends: 359 [2020-10-12 20:55:38,510 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 [2020-10-12 20:55:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-12 20:55:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 311. [2020-10-12 20:55:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 20:55:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 476 transitions. [2020-10-12 20:55:38,521 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 476 transitions. Word has length 78 [2020-10-12 20:55:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:38,521 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 476 transitions. [2020-10-12 20:55:38,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 476 transitions. [2020-10-12 20:55:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:55:38,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:38,523 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] [2020-10-12 20:55:38,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:55:38,523 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:38,524 INFO L82 PathProgramCache]: Analyzing trace with hash -322067945, now seen corresponding path program 1 times [2020-10-12 20:55:38,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:38,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499636805] [2020-10-12 20:55:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:55:43,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:55:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:55:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:43,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:43,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:43,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:43,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:43,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499636805] [2020-10-12 20:55:43,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:43,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:43,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149153718] [2020-10-12 20:55:43,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:43,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:43,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:43,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:43,605 INFO L87 Difference]: Start difference. First operand 311 states and 476 transitions. Second operand 5 states. [2020-10-12 20:55:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:44,268 INFO L93 Difference]: Finished difference Result 515 states and 778 transitions. [2020-10-12 20:55:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:44,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:55:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:44,272 INFO L225 Difference]: With dead ends: 515 [2020-10-12 20:55:44,272 INFO L226 Difference]: Without dead ends: 349 [2020-10-12 20:55:44,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-12 20:55:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 320. [2020-10-12 20:55:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-12 20:55:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 485 transitions. [2020-10-12 20:55:44,285 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 485 transitions. Word has length 79 [2020-10-12 20:55:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:44,285 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 485 transitions. [2020-10-12 20:55:44,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 485 transitions. [2020-10-12 20:55:44,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:55:44,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:44,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:44,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:55:44,287 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:44,287 INFO L82 PathProgramCache]: Analyzing trace with hash -946790930, now seen corresponding path program 1 times [2020-10-12 20:55:44,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:44,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590801031] [2020-10-12 20:55:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:55:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:55:44,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590801031] [2020-10-12 20:55:44,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:44,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:44,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661170281] [2020-10-12 20:55:44,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:44,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:44,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:44,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:44,943 INFO L87 Difference]: Start difference. First operand 320 states and 485 transitions. Second operand 5 states. [2020-10-12 20:55:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:45,696 INFO L93 Difference]: Finished difference Result 598 states and 907 transitions. [2020-10-12 20:55:45,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:45,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:55:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:45,700 INFO L225 Difference]: With dead ends: 598 [2020-10-12 20:55:45,700 INFO L226 Difference]: Without dead ends: 433 [2020-10-12 20:55:45,701 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 [2020-10-12 20:55:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-10-12 20:55:45,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 359. [2020-10-12 20:55:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 20:55:45,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 557 transitions. [2020-10-12 20:55:45,713 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 557 transitions. Word has length 79 [2020-10-12 20:55:45,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:45,713 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 557 transitions. [2020-10-12 20:55:45,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 557 transitions. [2020-10-12 20:55:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 20:55:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:45,715 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] [2020-10-12 20:55:45,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:55:45,715 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:45,715 INFO L82 PathProgramCache]: Analyzing trace with hash -806064243, now seen corresponding path program 1 times [2020-10-12 20:55:45,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:45,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824755710] [2020-10-12 20:55:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:45,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:45,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 20:55:45,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:55:45,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:46,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824755710] [2020-10-12 20:55:46,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:46,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:46,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144585670] [2020-10-12 20:55:46,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:46,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:46,042 INFO L87 Difference]: Start difference. First operand 359 states and 557 transitions. Second operand 5 states. [2020-10-12 20:55:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:46,636 INFO L93 Difference]: Finished difference Result 720 states and 1120 transitions. [2020-10-12 20:55:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:46,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 20:55:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:46,640 INFO L225 Difference]: With dead ends: 720 [2020-10-12 20:55:46,640 INFO L226 Difference]: Without dead ends: 386 [2020-10-12 20:55:46,641 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 [2020-10-12 20:55:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-12 20:55:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 359. [2020-10-12 20:55:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 20:55:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 555 transitions. [2020-10-12 20:55:46,653 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 555 transitions. Word has length 79 [2020-10-12 20:55:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:46,653 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 555 transitions. [2020-10-12 20:55:46,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 555 transitions. [2020-10-12 20:55:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:55:46,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:46,655 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] [2020-10-12 20:55:46,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:55:46,655 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:46,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash 512769224, now seen corresponding path program 1 times [2020-10-12 20:55:46,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:46,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139365552] [2020-10-12 20:55:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:55:47,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:55:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-12 20:55:47,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:55:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:55:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:47,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:47,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:47,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:47,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:55:47,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139365552] [2020-10-12 20:55:47,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:47,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:47,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847757030] [2020-10-12 20:55:47,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:47,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:47,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:47,464 INFO L87 Difference]: Start difference. First operand 359 states and 555 transitions. Second operand 5 states. [2020-10-12 20:55:48,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:48,231 INFO L93 Difference]: Finished difference Result 630 states and 966 transitions. [2020-10-12 20:55:48,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:48,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:55:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:48,236 INFO L225 Difference]: With dead ends: 630 [2020-10-12 20:55:48,236 INFO L226 Difference]: Without dead ends: 426 [2020-10-12 20:55:48,237 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 [2020-10-12 20:55:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-12 20:55:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 360. [2020-10-12 20:55:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-12 20:55:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 556 transitions. [2020-10-12 20:55:48,258 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 556 transitions. Word has length 80 [2020-10-12 20:55:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:48,259 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 556 transitions. [2020-10-12 20:55:48,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 556 transitions. [2020-10-12 20:55:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:55:48,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:48,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:48,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:55:48,261 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:48,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1891250359, now seen corresponding path program 1 times [2020-10-12 20:55:48,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:48,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744342559] [2020-10-12 20:55:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:55:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:55:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:55:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:55:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:55:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:55:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:53,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:53,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:55:53,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744342559] [2020-10-12 20:55:53,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:53,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:53,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138989143] [2020-10-12 20:55:53,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:53,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:53,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:53,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:53,366 INFO L87 Difference]: Start difference. First operand 360 states and 556 transitions. Second operand 5 states. [2020-10-12 20:55:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:54,196 INFO L93 Difference]: Finished difference Result 780 states and 1208 transitions. [2020-10-12 20:55:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:54,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:55:54,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:54,199 INFO L225 Difference]: With dead ends: 780 [2020-10-12 20:55:54,199 INFO L226 Difference]: Without dead ends: 565 [2020-10-12 20:55:54,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:55:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-12 20:55:54,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 393. [2020-10-12 20:55:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-12 20:55:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 605 transitions. [2020-10-12 20:55:54,215 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 605 transitions. Word has length 80 [2020-10-12 20:55:54,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:54,215 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 605 transitions. [2020-10-12 20:55:54,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 605 transitions. [2020-10-12 20:55:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 20:55:54,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:54,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:54,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:55:54,217 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1407254061, now seen corresponding path program 1 times [2020-10-12 20:55:54,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:54,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633095021] [2020-10-12 20:55:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:55:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:55,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:55,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:55,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:55,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:55,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:55:55,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633095021] [2020-10-12 20:55:55,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:55,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:55,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561200955] [2020-10-12 20:55:55,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:55,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:55,482 INFO L87 Difference]: Start difference. First operand 393 states and 605 transitions. Second operand 5 states. [2020-10-12 20:55:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:56,042 INFO L93 Difference]: Finished difference Result 647 states and 999 transitions. [2020-10-12 20:55:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:56,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-12 20:55:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:56,045 INFO L225 Difference]: With dead ends: 647 [2020-10-12 20:55:56,046 INFO L226 Difference]: Without dead ends: 396 [2020-10-12 20:55:56,047 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 [2020-10-12 20:55:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-12 20:55:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 393. [2020-10-12 20:55:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-12 20:55:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 604 transitions. [2020-10-12 20:55:56,062 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 604 transitions. Word has length 80 [2020-10-12 20:55:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:56,063 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 604 transitions. [2020-10-12 20:55:56,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 604 transitions. [2020-10-12 20:55:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:55:56,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:56,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:56,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:55:56,065 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:56,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1833916990, now seen corresponding path program 1 times [2020-10-12 20:55:56,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:56,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037285428] [2020-10-12 20:55:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:56,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:56,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:56,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:56,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:56,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037285428] [2020-10-12 20:55:56,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:56,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:56,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969237484] [2020-10-12 20:55:56,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:56,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:56,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:56,368 INFO L87 Difference]: Start difference. First operand 393 states and 604 transitions. Second operand 5 states. [2020-10-12 20:55:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:57,291 INFO L93 Difference]: Finished difference Result 954 states and 1479 transitions. [2020-10-12 20:55:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:57,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:55:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:57,294 INFO L225 Difference]: With dead ends: 954 [2020-10-12 20:55:57,294 INFO L226 Difference]: Without dead ends: 586 [2020-10-12 20:55:57,295 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 [2020-10-12 20:55:57,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-10-12 20:55:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 473. [2020-10-12 20:55:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-12 20:55:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 750 transitions. [2020-10-12 20:55:57,309 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 750 transitions. Word has length 87 [2020-10-12 20:55:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:57,310 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 750 transitions. [2020-10-12 20:55:57,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:57,310 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 750 transitions. [2020-10-12 20:55:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 20:55:57,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:57,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:55:57,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:55:57,312 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash 462109692, now seen corresponding path program 1 times [2020-10-12 20:55:57,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:57,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372197693] [2020-10-12 20:55:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:57,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:55:57,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:55:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:57,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:57,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372197693] [2020-10-12 20:55:57,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:57,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:57,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390881544] [2020-10-12 20:55:57,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:57,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:57,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:57,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:57,815 INFO L87 Difference]: Start difference. First operand 473 states and 750 transitions. Second operand 5 states. [2020-10-12 20:55:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:58,731 INFO L93 Difference]: Finished difference Result 1112 states and 1769 transitions. [2020-10-12 20:55:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:58,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2020-10-12 20:55:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:58,737 INFO L225 Difference]: With dead ends: 1112 [2020-10-12 20:55:58,738 INFO L226 Difference]: Without dead ends: 664 [2020-10-12 20:55:58,739 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 [2020-10-12 20:55:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-12 20:55:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 471. [2020-10-12 20:55:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-12 20:55:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 748 transitions. [2020-10-12 20:55:58,754 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 748 transitions. Word has length 87 [2020-10-12 20:55:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:58,754 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 748 transitions. [2020-10-12 20:55:58,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 748 transitions. [2020-10-12 20:55:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:55:58,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:58,756 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] [2020-10-12 20:55:58,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:55:58,757 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash 815368824, now seen corresponding path program 1 times [2020-10-12 20:55:58,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:58,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840081736] [2020-10-12 20:55:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:55:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:58,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:58,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:55:58,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:55:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 20:55:58,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:55:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:55:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:55:58,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:55:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:55:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:55:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:55:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:55:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:55:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:55:59,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840081736] [2020-10-12 20:55:59,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:55:59,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:55:59,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717489042] [2020-10-12 20:55:59,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:55:59,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:55:59,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:55:59,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:55:59,042 INFO L87 Difference]: Start difference. First operand 471 states and 748 transitions. Second operand 5 states. [2020-10-12 20:55:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:55:59,966 INFO L93 Difference]: Finished difference Result 1098 states and 1748 transitions. [2020-10-12 20:55:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:55:59,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:55:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:55:59,971 INFO L225 Difference]: With dead ends: 1098 [2020-10-12 20:55:59,971 INFO L226 Difference]: Without dead ends: 652 [2020-10-12 20:55:59,972 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 [2020-10-12 20:55:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2020-10-12 20:55:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 526. [2020-10-12 20:55:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-12 20:55:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 846 transitions. [2020-10-12 20:55:59,986 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 846 transitions. Word has length 88 [2020-10-12 20:55:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:55:59,986 INFO L479 AbstractCegarLoop]: Abstraction has 526 states and 846 transitions. [2020-10-12 20:55:59,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:55:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 846 transitions. [2020-10-12 20:55:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 20:55:59,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:55:59,988 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] [2020-10-12 20:55:59,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:55:59,989 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:55:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:55:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1239015546, now seen corresponding path program 1 times [2020-10-12 20:55:59,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:55:59,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060529668] [2020-10-12 20:55:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 20:56:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:56:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:00,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:00,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:00,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:00,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:00,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:00,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060529668] [2020-10-12 20:56:00,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:00,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576362151] [2020-10-12 20:56:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:00,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:00,579 INFO L87 Difference]: Start difference. First operand 526 states and 846 transitions. Second operand 5 states. [2020-10-12 20:56:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:01,516 INFO L93 Difference]: Finished difference Result 1128 states and 1798 transitions. [2020-10-12 20:56:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:01,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-12 20:56:01,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:01,522 INFO L225 Difference]: With dead ends: 1128 [2020-10-12 20:56:01,522 INFO L226 Difference]: Without dead ends: 627 [2020-10-12 20:56:01,524 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 [2020-10-12 20:56:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-12 20:56:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 446. [2020-10-12 20:56:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-12 20:56:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 700 transitions. [2020-10-12 20:56:01,538 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 700 transitions. Word has length 88 [2020-10-12 20:56:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:01,539 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 700 transitions. [2020-10-12 20:56:01,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 700 transitions. [2020-10-12 20:56:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-12 20:56:01,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:01,541 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:01,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:56:01,541 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash -510488013, now seen corresponding path program 1 times [2020-10-12 20:56:01,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:01,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313810698] [2020-10-12 20:56:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:02,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 20:56:02,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-12 20:56:02,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:56:02,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:02,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:56:02,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313810698] [2020-10-12 20:56:02,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:02,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:02,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255373165] [2020-10-12 20:56:02,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:02,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:02,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:02,788 INFO L87 Difference]: Start difference. First operand 446 states and 700 transitions. Second operand 5 states. [2020-10-12 20:56:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:03,525 INFO L93 Difference]: Finished difference Result 763 states and 1194 transitions. [2020-10-12 20:56:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:03,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-12 20:56:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:03,529 INFO L225 Difference]: With dead ends: 763 [2020-10-12 20:56:03,529 INFO L226 Difference]: Without dead ends: 526 [2020-10-12 20:56:03,529 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 [2020-10-12 20:56:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-12 20:56:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 449. [2020-10-12 20:56:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-12 20:56:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 705 transitions. [2020-10-12 20:56:03,542 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 705 transitions. Word has length 93 [2020-10-12 20:56:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:03,542 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 705 transitions. [2020-10-12 20:56:03,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 705 transitions. [2020-10-12 20:56:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:56:03,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:03,544 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:03,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:56:03,544 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:03,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:03,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1619486073, now seen corresponding path program 1 times [2020-10-12 20:56:03,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:03,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840872865] [2020-10-12 20:56:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2976 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:56:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:06,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:06,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:06,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:06,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:06,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:06,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:06,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:06,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 20:56:06,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840872865] [2020-10-12 20:56:06,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:06,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:06,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534938501] [2020-10-12 20:56:06,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:06,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:06,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:06,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:06,624 INFO L87 Difference]: Start difference. First operand 449 states and 705 transitions. Second operand 5 states. [2020-10-12 20:56:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:07,248 INFO L93 Difference]: Finished difference Result 1303 states and 2057 transitions. [2020-10-12 20:56:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:07,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:56:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:07,253 INFO L225 Difference]: With dead ends: 1303 [2020-10-12 20:56:07,253 INFO L226 Difference]: Without dead ends: 879 [2020-10-12 20:56:07,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-10-12 20:56:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-10-12 20:56:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-12 20:56:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1364 transitions. [2020-10-12 20:56:07,282 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1364 transitions. Word has length 94 [2020-10-12 20:56:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:07,282 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1364 transitions. [2020-10-12 20:56:07,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1364 transitions. [2020-10-12 20:56:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:56:07,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:07,285 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:07,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:56:07,285 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1058786295, now seen corresponding path program 1 times [2020-10-12 20:56:07,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:07,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895466300] [2020-10-12 20:56:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:10,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3182 [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:10,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 20:56:10,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 20:56:10,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895466300] [2020-10-12 20:56:10,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:10,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:10,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174750562] [2020-10-12 20:56:10,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:10,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:10,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:10,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:10,548 INFO L87 Difference]: Start difference. First operand 877 states and 1364 transitions. Second operand 5 states. [2020-10-12 20:56:11,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:11,235 INFO L93 Difference]: Finished difference Result 1479 states and 2271 transitions. [2020-10-12 20:56:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:11,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-12 20:56:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:11,240 INFO L225 Difference]: With dead ends: 1479 [2020-10-12 20:56:11,240 INFO L226 Difference]: Without dead ends: 949 [2020-10-12 20:56:11,242 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 [2020-10-12 20:56:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-12 20:56:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 877. [2020-10-12 20:56:11,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-10-12 20:56:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1360 transitions. [2020-10-12 20:56:11,271 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1360 transitions. Word has length 94 [2020-10-12 20:56:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:11,271 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1360 transitions. [2020-10-12 20:56:11,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1360 transitions. [2020-10-12 20:56:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 20:56:11,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:11,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:11,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:56:11,278 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:11,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1416941364, now seen corresponding path program 1 times [2020-10-12 20:56:11,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:11,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166819057] [2020-10-12 20:56:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:11,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:56:16,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:16,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:56:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 20:56:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 20:56:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:16,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 20:56:16,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166819057] [2020-10-12 20:56:16,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:16,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:16,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151650889] [2020-10-12 20:56:16,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:16,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:16,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:16,515 INFO L87 Difference]: Start difference. First operand 877 states and 1360 transitions. Second operand 9 states. [2020-10-12 20:56:18,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:18,135 INFO L93 Difference]: Finished difference Result 1888 states and 2918 transitions. [2020-10-12 20:56:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:56:18,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 20:56:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:18,142 INFO L225 Difference]: With dead ends: 1888 [2020-10-12 20:56:18,142 INFO L226 Difference]: Without dead ends: 1415 [2020-10-12 20:56:18,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:56:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-10-12 20:56:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 990. [2020-10-12 20:56:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-10-12 20:56:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1531 transitions. [2020-10-12 20:56:18,175 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1531 transitions. Word has length 94 [2020-10-12 20:56:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:18,175 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1531 transitions. [2020-10-12 20:56:18,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1531 transitions. [2020-10-12 20:56:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 20:56:18,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:18,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:18,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:56:18,178 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1177506966, now seen corresponding path program 1 times [2020-10-12 20:56:18,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:18,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208169809] [2020-10-12 20:56:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:18,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:56:19,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:19,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:19,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:19,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:19,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:19,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:56:19,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208169809] [2020-10-12 20:56:19,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:19,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:19,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515132441] [2020-10-12 20:56:19,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:19,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:19,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:19,546 INFO L87 Difference]: Start difference. First operand 990 states and 1531 transitions. Second operand 5 states. [2020-10-12 20:56:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:20,272 INFO L93 Difference]: Finished difference Result 2405 states and 3738 transitions. [2020-10-12 20:56:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:20,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-12 20:56:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:20,280 INFO L225 Difference]: With dead ends: 2405 [2020-10-12 20:56:20,280 INFO L226 Difference]: Without dead ends: 1456 [2020-10-12 20:56:20,282 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 [2020-10-12 20:56:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-10-12 20:56:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1048. [2020-10-12 20:56:20,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2020-10-12 20:56:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1619 transitions. [2020-10-12 20:56:20,314 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1619 transitions. Word has length 95 [2020-10-12 20:56:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:20,314 INFO L479 AbstractCegarLoop]: Abstraction has 1048 states and 1619 transitions. [2020-10-12 20:56:20,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1619 transitions. [2020-10-12 20:56:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:56:20,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:20,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:20,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:56:20,317 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash -628704567, now seen corresponding path program 1 times [2020-10-12 20:56:20,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:20,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309622275] [2020-10-12 20:56:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:25,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 20:56:25,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:25,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:25,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:56:25,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309622275] [2020-10-12 20:56:25,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:25,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:56:25,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436296424] [2020-10-12 20:56:25,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:56:25,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:25,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:56:25,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:56:25,531 INFO L87 Difference]: Start difference. First operand 1048 states and 1619 transitions. Second operand 9 states. [2020-10-12 20:56:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:27,174 INFO L93 Difference]: Finished difference Result 2506 states and 3884 transitions. [2020-10-12 20:56:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:56:27,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:56:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:27,181 INFO L225 Difference]: With dead ends: 2506 [2020-10-12 20:56:27,181 INFO L226 Difference]: Without dead ends: 2004 [2020-10-12 20:56:27,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:56:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-10-12 20:56:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1789. [2020-10-12 20:56:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2020-10-12 20:56:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2807 transitions. [2020-10-12 20:56:27,236 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2807 transitions. Word has length 96 [2020-10-12 20:56:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:27,237 INFO L479 AbstractCegarLoop]: Abstraction has 1789 states and 2807 transitions. [2020-10-12 20:56:27,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:56:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2807 transitions. [2020-10-12 20:56:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:56:27,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:27,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:56:27,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:56:27,242 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:27,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2094511920, now seen corresponding path program 1 times [2020-10-12 20:56:27,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:27,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425013904] [2020-10-12 20:56:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:27,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:29,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2257 [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:56:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:56:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:29,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:29,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:56:29,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425013904] [2020-10-12 20:56:29,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:29,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:29,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54937430] [2020-10-12 20:56:29,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:29,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:29,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:29,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:29,584 INFO L87 Difference]: Start difference. First operand 1789 states and 2807 transitions. Second operand 5 states. [2020-10-12 20:56:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:30,167 INFO L93 Difference]: Finished difference Result 2912 states and 4529 transitions. [2020-10-12 20:56:30,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:30,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:56:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:30,175 INFO L225 Difference]: With dead ends: 2912 [2020-10-12 20:56:30,175 INFO L226 Difference]: Without dead ends: 1905 [2020-10-12 20:56:30,182 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 [2020-10-12 20:56:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-12 20:56:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1789. [2020-10-12 20:56:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2020-10-12 20:56:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2799 transitions. [2020-10-12 20:56:30,234 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2799 transitions. Word has length 101 [2020-10-12 20:56:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:30,235 INFO L479 AbstractCegarLoop]: Abstraction has 1789 states and 2799 transitions. [2020-10-12 20:56:30,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2799 transitions. [2020-10-12 20:56:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:56:30,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:30,239 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] [2020-10-12 20:56:30,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:56:30,239 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:30,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:30,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1152818609, now seen corresponding path program 1 times [2020-10-12 20:56:30,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:30,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804245548] [2020-10-12 20:56:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2629 [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:56:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:32,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:32,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804245548] [2020-10-12 20:56:32,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:32,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:32,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522295240] [2020-10-12 20:56:32,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:32,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:32,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:32,967 INFO L87 Difference]: Start difference. First operand 1789 states and 2799 transitions. Second operand 5 states. [2020-10-12 20:56:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:33,785 INFO L93 Difference]: Finished difference Result 3391 states and 5273 transitions. [2020-10-12 20:56:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:33,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:56:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:33,796 INFO L225 Difference]: With dead ends: 3391 [2020-10-12 20:56:33,796 INFO L226 Difference]: Without dead ends: 2431 [2020-10-12 20:56:33,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-10-12 20:56:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1855. [2020-10-12 20:56:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1855 states. [2020-10-12 20:56:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2897 transitions. [2020-10-12 20:56:33,850 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2897 transitions. Word has length 101 [2020-10-12 20:56:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:33,850 INFO L479 AbstractCegarLoop]: Abstraction has 1855 states and 2897 transitions. [2020-10-12 20:56:33,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2897 transitions. [2020-10-12 20:56:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 20:56:33,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:33,855 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] [2020-10-12 20:56:33,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:56:33,855 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:33,856 INFO L82 PathProgramCache]: Analyzing trace with hash -276799603, now seen corresponding path program 1 times [2020-10-12 20:56:33,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:33,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417558253] [2020-10-12 20:56:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:36,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2593 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:56:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:36,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:36,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417558253] [2020-10-12 20:56:36,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:36,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:36,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741437537] [2020-10-12 20:56:36,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:36,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:36,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:36,539 INFO L87 Difference]: Start difference. First operand 1855 states and 2897 transitions. Second operand 5 states. [2020-10-12 20:56:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:37,485 INFO L93 Difference]: Finished difference Result 3366 states and 5224 transitions. [2020-10-12 20:56:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:37,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-12 20:56:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:37,503 INFO L225 Difference]: With dead ends: 3366 [2020-10-12 20:56:37,503 INFO L226 Difference]: Without dead ends: 2373 [2020-10-12 20:56:37,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-10-12 20:56:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1731. [2020-10-12 20:56:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-10-12 20:56:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2701 transitions. [2020-10-12 20:56:37,552 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2701 transitions. Word has length 101 [2020-10-12 20:56:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:37,553 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2701 transitions. [2020-10-12 20:56:37,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2701 transitions. [2020-10-12 20:56:37,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:56:37,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:37,563 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-10-12 20:56:37,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 20:56:37,564 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:37,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:37,564 INFO L82 PathProgramCache]: Analyzing trace with hash -791909420, now seen corresponding path program 1 times [2020-10-12 20:56:37,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:37,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456341460] [2020-10-12 20:56:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:42,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:56:42,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:42,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 20:56:42,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 20:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:56:42,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 20:56:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:42,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:42,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 20:56:42,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456341460] [2020-10-12 20:56:42,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:56:42,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:56:42,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747822774] [2020-10-12 20:56:42,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:56:42,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:42,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:56:42,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:56:42,949 INFO L87 Difference]: Start difference. First operand 1731 states and 2701 transitions. Second operand 10 states. [2020-10-12 20:56:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:44,495 INFO L93 Difference]: Finished difference Result 2766 states and 4278 transitions. [2020-10-12 20:56:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:56:44,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-12 20:56:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:44,506 INFO L225 Difference]: With dead ends: 2766 [2020-10-12 20:56:44,506 INFO L226 Difference]: Without dead ends: 2293 [2020-10-12 20:56:44,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:56:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2020-10-12 20:56:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1006. [2020-10-12 20:56:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-12 20:56:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1540 transitions. [2020-10-12 20:56:44,547 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1540 transitions. Word has length 109 [2020-10-12 20:56:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:44,548 INFO L479 AbstractCegarLoop]: Abstraction has 1006 states and 1540 transitions. [2020-10-12 20:56:44,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:56:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1540 transitions. [2020-10-12 20:56:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:56:44,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:44,550 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] [2020-10-12 20:56:44,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 20:56:44,550 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash -170825440, now seen corresponding path program 1 times [2020-10-12 20:56:44,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:44,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684665209] [2020-10-12 20:56:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1296 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:56:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:45,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:45,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:45,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:45,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684665209] [2020-10-12 20:56:45,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:45,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:45,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393182751] [2020-10-12 20:56:45,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:45,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:45,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:45,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:45,939 INFO L87 Difference]: Start difference. First operand 1006 states and 1540 transitions. Second operand 5 states. [2020-10-12 20:56:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:46,733 INFO L93 Difference]: Finished difference Result 2355 states and 3612 transitions. [2020-10-12 20:56:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:46,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:56:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:46,746 INFO L225 Difference]: With dead ends: 2355 [2020-10-12 20:56:46,746 INFO L226 Difference]: Without dead ends: 1386 [2020-10-12 20:56:46,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:56:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-12 20:56:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1104. [2020-10-12 20:56:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-10-12 20:56:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1698 transitions. [2020-10-12 20:56:46,783 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1698 transitions. Word has length 109 [2020-10-12 20:56:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:46,783 INFO L479 AbstractCegarLoop]: Abstraction has 1104 states and 1698 transitions. [2020-10-12 20:56:46,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1698 transitions. [2020-10-12 20:56:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 20:56:46,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:46,785 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] [2020-10-12 20:56:46,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 20:56:46,786 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash 508446814, now seen corresponding path program 1 times [2020-10-12 20:56:46,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:46,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633701930] [2020-10-12 20:56:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:47,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:47,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 20:56:47,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:47,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 20:56:47,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:47,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:56:47,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:47,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633701930] [2020-10-12 20:56:47,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:47,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:47,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930794444] [2020-10-12 20:56:47,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:47,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:47,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:47,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:47,200 INFO L87 Difference]: Start difference. First operand 1104 states and 1698 transitions. Second operand 5 states. [2020-10-12 20:56:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:48,110 INFO L93 Difference]: Finished difference Result 2609 states and 4019 transitions. [2020-10-12 20:56:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:48,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-12 20:56:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:48,114 INFO L225 Difference]: With dead ends: 2609 [2020-10-12 20:56:48,114 INFO L226 Difference]: Without dead ends: 1542 [2020-10-12 20:56:48,116 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 [2020-10-12 20:56:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-10-12 20:56:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1258. [2020-10-12 20:56:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-10-12 20:56:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1976 transitions. [2020-10-12 20:56:48,153 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1976 transitions. Word has length 109 [2020-10-12 20:56:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:48,153 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1976 transitions. [2020-10-12 20:56:48,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1976 transitions. [2020-10-12 20:56:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 20:56:48,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:48,155 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] [2020-10-12 20:56:48,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 20:56:48,156 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:48,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1619500968, now seen corresponding path program 1 times [2020-10-12 20:56:48,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:48,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775731683] [2020-10-12 20:56:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:56:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:56:48,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:56:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:48,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:48,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:48,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:56:48,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775731683] [2020-10-12 20:56:48,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:48,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:48,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666164657] [2020-10-12 20:56:48,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:48,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:48,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:48,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:48,588 INFO L87 Difference]: Start difference. First operand 1258 states and 1976 transitions. Second operand 5 states. [2020-10-12 20:56:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:49,491 INFO L93 Difference]: Finished difference Result 2741 states and 4260 transitions. [2020-10-12 20:56:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:49,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-12 20:56:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:49,498 INFO L225 Difference]: With dead ends: 2741 [2020-10-12 20:56:49,498 INFO L226 Difference]: Without dead ends: 1520 [2020-10-12 20:56:49,500 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 [2020-10-12 20:56:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-10-12 20:56:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1162. [2020-10-12 20:56:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2020-10-12 20:56:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1792 transitions. [2020-10-12 20:56:49,525 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1792 transitions. Word has length 110 [2020-10-12 20:56:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:49,525 INFO L479 AbstractCegarLoop]: Abstraction has 1162 states and 1792 transitions. [2020-10-12 20:56:49,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1792 transitions. [2020-10-12 20:56:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:56:49,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:49,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:49,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 20:56:49,527 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash -720565866, now seen corresponding path program 1 times [2020-10-12 20:56:49,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:49,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051859423] [2020-10-12 20:56:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:50,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:50,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:56:50,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:50,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:50,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:50,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051859423] [2020-10-12 20:56:50,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:50,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:50,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968903625] [2020-10-12 20:56:50,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:50,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:50,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:50,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:50,775 INFO L87 Difference]: Start difference. First operand 1162 states and 1792 transitions. Second operand 5 states. [2020-10-12 20:56:51,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:51,605 INFO L93 Difference]: Finished difference Result 2569 states and 3954 transitions. [2020-10-12 20:56:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:51,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:56:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:51,608 INFO L225 Difference]: With dead ends: 2569 [2020-10-12 20:56:51,608 INFO L226 Difference]: Without dead ends: 1444 [2020-10-12 20:56:51,609 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 [2020-10-12 20:56:51,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-10-12 20:56:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1178. [2020-10-12 20:56:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-10-12 20:56:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1820 transitions. [2020-10-12 20:56:51,643 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1820 transitions. Word has length 112 [2020-10-12 20:56:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:51,643 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1820 transitions. [2020-10-12 20:56:51,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:51,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1820 transitions. [2020-10-12 20:56:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 20:56:51,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:51,645 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:51,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 20:56:51,646 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:51,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1888221592, now seen corresponding path program 1 times [2020-10-12 20:56:51,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:51,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563852082] [2020-10-12 20:56:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:53,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:54,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2869 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:56:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:54,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:54,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563852082] [2020-10-12 20:56:54,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:54,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:54,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454868615] [2020-10-12 20:56:54,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:54,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:54,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:54,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:54,595 INFO L87 Difference]: Start difference. First operand 1178 states and 1820 transitions. Second operand 5 states. [2020-10-12 20:56:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:55,524 INFO L93 Difference]: Finished difference Result 2695 states and 4168 transitions. [2020-10-12 20:56:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:55,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-12 20:56:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:55,527 INFO L225 Difference]: With dead ends: 2695 [2020-10-12 20:56:55,527 INFO L226 Difference]: Without dead ends: 1554 [2020-10-12 20:56:55,529 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 [2020-10-12 20:56:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2020-10-12 20:56:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1272. [2020-10-12 20:56:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-10-12 20:56:55,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1978 transitions. [2020-10-12 20:56:55,570 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1978 transitions. Word has length 112 [2020-10-12 20:56:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:55,571 INFO L479 AbstractCegarLoop]: Abstraction has 1272 states and 1978 transitions. [2020-10-12 20:56:55,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1978 transitions. [2020-10-12 20:56:55,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:56:55,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:55,573 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:55,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 20:56:55,574 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:55,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1221781151, now seen corresponding path program 1 times [2020-10-12 20:56:55,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:55,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167407071] [2020-10-12 20:56:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:55,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:56,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:56:56,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:56:56,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:56:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:56,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:56,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:56:56,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:56:56,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:56:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:56:56,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:56:56,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:56:56,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:56:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:56:56,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167407071] [2020-10-12 20:56:56,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:56:56,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:56:56,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552294432] [2020-10-12 20:56:56,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:56:56,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:56:56,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:56:56,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:56:56,813 INFO L87 Difference]: Start difference. First operand 1272 states and 1978 transitions. Second operand 5 states. [2020-10-12 20:56:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:56:57,604 INFO L93 Difference]: Finished difference Result 2757 states and 4270 transitions. [2020-10-12 20:56:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:56:57,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:56:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:56:57,608 INFO L225 Difference]: With dead ends: 2757 [2020-10-12 20:56:57,609 INFO L226 Difference]: Without dead ends: 1522 [2020-10-12 20:56:57,611 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 [2020-10-12 20:56:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-10-12 20:56:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1292. [2020-10-12 20:56:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-12 20:56:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 2010 transitions. [2020-10-12 20:56:57,650 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 2010 transitions. Word has length 113 [2020-10-12 20:56:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:56:57,651 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 2010 transitions. [2020-10-12 20:56:57,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:56:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 2010 transitions. [2020-10-12 20:56:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 20:56:57,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:56:57,653 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:56:57,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 20:56:57,654 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:56:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:56:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1953748577, now seen corresponding path program 1 times [2020-10-12 20:56:57,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:56:57,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454654673] [2020-10-12 20:56:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:56:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:56:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:57,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:56:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2752 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 20:57:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:00,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:00,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:00,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 20:57:00,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454654673] [2020-10-12 20:57:00,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:00,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:00,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816143725] [2020-10-12 20:57:00,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:00,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:00,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:00,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:00,511 INFO L87 Difference]: Start difference. First operand 1292 states and 2010 transitions. Second operand 5 states. [2020-10-12 20:57:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:01,219 INFO L93 Difference]: Finished difference Result 2623 states and 4064 transitions. [2020-10-12 20:57:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:01,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-12 20:57:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:01,223 INFO L225 Difference]: With dead ends: 2623 [2020-10-12 20:57:01,224 INFO L226 Difference]: Without dead ends: 1368 [2020-10-12 20:57:01,225 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 [2020-10-12 20:57:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-10-12 20:57:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1276. [2020-10-12 20:57:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-12 20:57:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1978 transitions. [2020-10-12 20:57:01,265 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1978 transitions. Word has length 113 [2020-10-12 20:57:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:01,266 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1978 transitions. [2020-10-12 20:57:01,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1978 transitions. [2020-10-12 20:57:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 20:57:01,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:01,268 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] [2020-10-12 20:57:01,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 20:57:01,268 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:01,269 INFO L82 PathProgramCache]: Analyzing trace with hash -519879541, now seen corresponding path program 1 times [2020-10-12 20:57:01,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:01,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160040631] [2020-10-12 20:57:01,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1429 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:57:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:02,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:02,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:02,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160040631] [2020-10-12 20:57:02,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:02,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:02,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799240916] [2020-10-12 20:57:02,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:02,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:02,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:02,791 INFO L87 Difference]: Start difference. First operand 1276 states and 1978 transitions. Second operand 5 states. [2020-10-12 20:57:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:03,580 INFO L93 Difference]: Finished difference Result 2745 states and 4234 transitions. [2020-10-12 20:57:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:03,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-12 20:57:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:03,584 INFO L225 Difference]: With dead ends: 2745 [2020-10-12 20:57:03,584 INFO L226 Difference]: Without dead ends: 1506 [2020-10-12 20:57:03,586 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 [2020-10-12 20:57:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-10-12 20:57:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1276. [2020-10-12 20:57:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-12 20:57:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1974 transitions. [2020-10-12 20:57:03,626 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1974 transitions. Word has length 115 [2020-10-12 20:57:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:03,627 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1974 transitions. [2020-10-12 20:57:03,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1974 transitions. [2020-10-12 20:57:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:57:03,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:03,631 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] [2020-10-12 20:57:03,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 20:57:03,631 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:03,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:03,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2119123328, now seen corresponding path program 1 times [2020-10-12 20:57:03,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:03,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944916758] [2020-10-12 20:57:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:03,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:03,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:04,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1337 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:57:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:05,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:05,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944916758] [2020-10-12 20:57:05,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:05,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:05,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128520204] [2020-10-12 20:57:05,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:05,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:05,064 INFO L87 Difference]: Start difference. First operand 1276 states and 1974 transitions. Second operand 5 states. [2020-10-12 20:57:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:05,859 INFO L93 Difference]: Finished difference Result 2737 states and 4214 transitions. [2020-10-12 20:57:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:05,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:57:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:05,863 INFO L225 Difference]: With dead ends: 2737 [2020-10-12 20:57:05,863 INFO L226 Difference]: Without dead ends: 1498 [2020-10-12 20:57:05,865 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 [2020-10-12 20:57:05,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-10-12 20:57:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1276. [2020-10-12 20:57:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-12 20:57:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1970 transitions. [2020-10-12 20:57:05,907 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1970 transitions. Word has length 116 [2020-10-12 20:57:05,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:05,907 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1970 transitions. [2020-10-12 20:57:05,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1970 transitions. [2020-10-12 20:57:05,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 20:57:05,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:05,909 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] [2020-10-12 20:57:05,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 20:57:05,910 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:05,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1701253474, now seen corresponding path program 1 times [2020-10-12 20:57:05,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:05,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756393113] [2020-10-12 20:57:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:06,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:57:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:06,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:06,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756393113] [2020-10-12 20:57:06,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:06,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:06,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083902420] [2020-10-12 20:57:06,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:06,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:06,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:06,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:06,400 INFO L87 Difference]: Start difference. First operand 1276 states and 1970 transitions. Second operand 5 states. [2020-10-12 20:57:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:07,187 INFO L93 Difference]: Finished difference Result 2725 states and 4190 transitions. [2020-10-12 20:57:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:07,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-12 20:57:07,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:07,190 INFO L225 Difference]: With dead ends: 2725 [2020-10-12 20:57:07,190 INFO L226 Difference]: Without dead ends: 1486 [2020-10-12 20:57:07,192 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 [2020-10-12 20:57:07,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2020-10-12 20:57:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1288. [2020-10-12 20:57:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-10-12 20:57:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1990 transitions. [2020-10-12 20:57:07,219 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1990 transitions. Word has length 116 [2020-10-12 20:57:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:07,219 INFO L479 AbstractCegarLoop]: Abstraction has 1288 states and 1990 transitions. [2020-10-12 20:57:07,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:07,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1990 transitions. [2020-10-12 20:57:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 20:57:07,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:07,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:07,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 20:57:07,222 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1600217028, now seen corresponding path program 1 times [2020-10-12 20:57:07,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:07,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755591969] [2020-10-12 20:57:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:07,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:07,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:08,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 20:57:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-12 20:57:08,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:57:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:08,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:08,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:08,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755591969] [2020-10-12 20:57:08,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:08,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:08,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644275982] [2020-10-12 20:57:08,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:08,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:08,358 INFO L87 Difference]: Start difference. First operand 1288 states and 1990 transitions. Second operand 5 states. [2020-10-12 20:57:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:09,166 INFO L93 Difference]: Finished difference Result 2737 states and 4206 transitions. [2020-10-12 20:57:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:09,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-12 20:57:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:09,170 INFO L225 Difference]: With dead ends: 2737 [2020-10-12 20:57:09,170 INFO L226 Difference]: Without dead ends: 1486 [2020-10-12 20:57:09,172 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 [2020-10-12 20:57:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2020-10-12 20:57:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1292. [2020-10-12 20:57:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-12 20:57:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1994 transitions. [2020-10-12 20:57:09,200 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1994 transitions. Word has length 118 [2020-10-12 20:57:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:09,200 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1994 transitions. [2020-10-12 20:57:09,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1994 transitions. [2020-10-12 20:57:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:57:09,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:09,203 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:57:09,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 20:57:09,203 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:09,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1241439470, now seen corresponding path program 1 times [2020-10-12 20:57:09,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:09,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354779796] [2020-10-12 20:57:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 20:57:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 20:57:14,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354779796] [2020-10-12 20:57:14,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:14,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:14,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730756078] [2020-10-12 20:57:14,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:14,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:14,299 INFO L87 Difference]: Start difference. First operand 1292 states and 1994 transitions. Second operand 5 states. [2020-10-12 20:57:15,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:15,068 INFO L93 Difference]: Finished difference Result 3033 states and 4687 transitions. [2020-10-12 20:57:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:15,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:57:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:15,071 INFO L225 Difference]: With dead ends: 3033 [2020-10-12 20:57:15,071 INFO L226 Difference]: Without dead ends: 1778 [2020-10-12 20:57:15,073 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 [2020-10-12 20:57:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-10-12 20:57:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1354. [2020-10-12 20:57:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1354 states. [2020-10-12 20:57:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 2078 transitions. [2020-10-12 20:57:15,106 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 2078 transitions. Word has length 119 [2020-10-12 20:57:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:15,106 INFO L479 AbstractCegarLoop]: Abstraction has 1354 states and 2078 transitions. [2020-10-12 20:57:15,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 2078 transitions. [2020-10-12 20:57:15,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:57:15,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:15,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:15,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 20:57:15,108 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash 951158001, now seen corresponding path program 1 times [2020-10-12 20:57:15,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:15,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852829109] [2020-10-12 20:57:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:57:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:16,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:16,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:16,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:16,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:16,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852829109] [2020-10-12 20:57:16,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:16,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:16,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911700970] [2020-10-12 20:57:16,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:16,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:16,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:16,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:16,040 INFO L87 Difference]: Start difference. First operand 1354 states and 2078 transitions. Second operand 5 states. [2020-10-12 20:57:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:16,848 INFO L93 Difference]: Finished difference Result 2865 states and 4374 transitions. [2020-10-12 20:57:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:16,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:57:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:16,850 INFO L225 Difference]: With dead ends: 2865 [2020-10-12 20:57:16,851 INFO L226 Difference]: Without dead ends: 1548 [2020-10-12 20:57:16,852 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 [2020-10-12 20:57:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-10-12 20:57:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1362. [2020-10-12 20:57:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-12 20:57:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2090 transitions. [2020-10-12 20:57:16,883 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2090 transitions. Word has length 119 [2020-10-12 20:57:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:16,884 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 2090 transitions. [2020-10-12 20:57:16,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2090 transitions. [2020-10-12 20:57:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 20:57:16,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:16,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 20:57:16,886 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash -316588382, now seen corresponding path program 1 times [2020-10-12 20:57:16,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:16,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784536593] [2020-10-12 20:57:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:16,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 20:57:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-12 20:57:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:57:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:18,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784536593] [2020-10-12 20:57:18,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:18,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:18,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600331735] [2020-10-12 20:57:18,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:18,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:18,042 INFO L87 Difference]: Start difference. First operand 1362 states and 2090 transitions. Second operand 5 states. [2020-10-12 20:57:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:18,834 INFO L93 Difference]: Finished difference Result 2857 states and 4362 transitions. [2020-10-12 20:57:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:18,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-12 20:57:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:18,836 INFO L225 Difference]: With dead ends: 2857 [2020-10-12 20:57:18,836 INFO L226 Difference]: Without dead ends: 1532 [2020-10-12 20:57:18,838 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 [2020-10-12 20:57:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-10-12 20:57:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1362. [2020-10-12 20:57:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-12 20:57:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2086 transitions. [2020-10-12 20:57:18,866 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2086 transitions. Word has length 119 [2020-10-12 20:57:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:18,866 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 2086 transitions. [2020-10-12 20:57:18,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2086 transitions. [2020-10-12 20:57:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:57:18,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:18,868 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:57:18,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 20:57:18,868 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:18,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1017803517, now seen corresponding path program 1 times [2020-10-12 20:57:18,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:18,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196206353] [2020-10-12 20:57:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:21,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:23,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-12 20:57:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 20:57:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:23,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:23,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:23,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:23,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:23,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:23,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:23,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 20:57:23,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196206353] [2020-10-12 20:57:23,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:23,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:23,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207006701] [2020-10-12 20:57:23,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:23,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:23,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:23,985 INFO L87 Difference]: Start difference. First operand 1362 states and 2086 transitions. Second operand 5 states. [2020-10-12 20:57:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:24,747 INFO L93 Difference]: Finished difference Result 3103 states and 4757 transitions. [2020-10-12 20:57:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:24,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:57:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:24,750 INFO L225 Difference]: With dead ends: 3103 [2020-10-12 20:57:24,750 INFO L226 Difference]: Without dead ends: 1778 [2020-10-12 20:57:24,752 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 [2020-10-12 20:57:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-10-12 20:57:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1358. [2020-10-12 20:57:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-10-12 20:57:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 2064 transitions. [2020-10-12 20:57:24,784 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 2064 transitions. Word has length 120 [2020-10-12 20:57:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:24,784 INFO L479 AbstractCegarLoop]: Abstraction has 1358 states and 2064 transitions. [2020-10-12 20:57:24,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 2064 transitions. [2020-10-12 20:57:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 20:57:24,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:24,786 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] [2020-10-12 20:57:24,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 20:57:24,786 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1620939755, now seen corresponding path program 1 times [2020-10-12 20:57:24,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:24,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092373361] [2020-10-12 20:57:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:24,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:24,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:24,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:25,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:57:25,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:25,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:25,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:25,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:25,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:25,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:25,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:25,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:25,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092373361] [2020-10-12 20:57:25,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:25,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:25,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986110501] [2020-10-12 20:57:25,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:25,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:25,718 INFO L87 Difference]: Start difference. First operand 1358 states and 2064 transitions. Second operand 5 states. [2020-10-12 20:57:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:26,521 INFO L93 Difference]: Finished difference Result 2837 states and 4298 transitions. [2020-10-12 20:57:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:26,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 20:57:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:26,524 INFO L225 Difference]: With dead ends: 2837 [2020-10-12 20:57:26,524 INFO L226 Difference]: Without dead ends: 1512 [2020-10-12 20:57:26,528 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 [2020-10-12 20:57:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-10-12 20:57:26,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1362. [2020-10-12 20:57:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2020-10-12 20:57:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2068 transitions. [2020-10-12 20:57:26,573 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2068 transitions. Word has length 120 [2020-10-12 20:57:26,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:26,574 INFO L479 AbstractCegarLoop]: Abstraction has 1362 states and 2068 transitions. [2020-10-12 20:57:26,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:26,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2068 transitions. [2020-10-12 20:57:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 20:57:26,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:26,576 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] [2020-10-12 20:57:26,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 20:57:26,577 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:26,577 INFO L82 PathProgramCache]: Analyzing trace with hash -701721578, now seen corresponding path program 1 times [2020-10-12 20:57:26,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:26,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164072514] [2020-10-12 20:57:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:26,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 20:57:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:26,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:26,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164072514] [2020-10-12 20:57:26,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:26,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:26,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139335674] [2020-10-12 20:57:26,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:26,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:26,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:26,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:26,964 INFO L87 Difference]: Start difference. First operand 1362 states and 2068 transitions. Second operand 5 states. [2020-10-12 20:57:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:27,725 INFO L93 Difference]: Finished difference Result 2841 states and 4298 transitions. [2020-10-12 20:57:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:27,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-12 20:57:27,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:27,727 INFO L225 Difference]: With dead ends: 2841 [2020-10-12 20:57:27,727 INFO L226 Difference]: Without dead ends: 1512 [2020-10-12 20:57:27,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:27,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2020-10-12 20:57:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1366. [2020-10-12 20:57:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-12 20:57:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2072 transitions. [2020-10-12 20:57:27,761 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2072 transitions. Word has length 121 [2020-10-12 20:57:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:27,761 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 2072 transitions. [2020-10-12 20:57:27,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2072 transitions. [2020-10-12 20:57:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 20:57:27,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:27,763 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] [2020-10-12 20:57:27,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 20:57:27,763 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1754550992, now seen corresponding path program 1 times [2020-10-12 20:57:27,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:27,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650861027] [2020-10-12 20:57:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:27,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:57:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:57:28,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:57:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:28,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:28,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650861027] [2020-10-12 20:57:28,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:28,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:28,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329829646] [2020-10-12 20:57:28,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:28,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:28,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:28,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:28,149 INFO L87 Difference]: Start difference. First operand 1366 states and 2072 transitions. Second operand 5 states. [2020-10-12 20:57:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:28,898 INFO L93 Difference]: Finished difference Result 2837 states and 4290 transitions. [2020-10-12 20:57:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:28,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-12 20:57:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:28,900 INFO L225 Difference]: With dead ends: 2837 [2020-10-12 20:57:28,900 INFO L226 Difference]: Without dead ends: 1504 [2020-10-12 20:57:28,902 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 [2020-10-12 20:57:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2020-10-12 20:57:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1370. [2020-10-12 20:57:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2020-10-12 20:57:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2076 transitions. [2020-10-12 20:57:28,932 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2076 transitions. Word has length 122 [2020-10-12 20:57:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:28,932 INFO L479 AbstractCegarLoop]: Abstraction has 1370 states and 2076 transitions. [2020-10-12 20:57:28,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2076 transitions. [2020-10-12 20:57:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 20:57:28,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:28,935 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] [2020-10-12 20:57:28,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 20:57:28,935 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:28,936 INFO L82 PathProgramCache]: Analyzing trace with hash 268245103, now seen corresponding path program 1 times [2020-10-12 20:57:28,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:28,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597275077] [2020-10-12 20:57:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:29,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:31,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 20:57:31,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2637 [2020-10-12 20:57:31,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:57:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:57:31,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:57:31,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:31,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:57:31,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597275077] [2020-10-12 20:57:31,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:31,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:31,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469943116] [2020-10-12 20:57:31,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:31,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:31,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:31,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:31,674 INFO L87 Difference]: Start difference. First operand 1370 states and 2076 transitions. Second operand 5 states. [2020-10-12 20:57:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:32,576 INFO L93 Difference]: Finished difference Result 3057 states and 4628 transitions. [2020-10-12 20:57:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:32,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-12 20:57:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:32,580 INFO L225 Difference]: With dead ends: 3057 [2020-10-12 20:57:32,580 INFO L226 Difference]: Without dead ends: 1680 [2020-10-12 20:57:32,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:57:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-12 20:57:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1312. [2020-10-12 20:57:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2020-10-12 20:57:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1982 transitions. [2020-10-12 20:57:32,627 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1982 transitions. Word has length 123 [2020-10-12 20:57:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:32,628 INFO L479 AbstractCegarLoop]: Abstraction has 1312 states and 1982 transitions. [2020-10-12 20:57:32,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1982 transitions. [2020-10-12 20:57:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 20:57:32,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:32,631 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:32,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 20:57:32,632 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:32,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1160488506, now seen corresponding path program 1 times [2020-10-12 20:57:32,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:32,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551543381] [2020-10-12 20:57:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:32,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:57:32,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 20:57:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:32,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:32,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:57:32,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551543381] [2020-10-12 20:57:32,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:32,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:32,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714861540] [2020-10-12 20:57:32,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:32,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:32,986 INFO L87 Difference]: Start difference. First operand 1312 states and 1982 transitions. Second operand 5 states. [2020-10-12 20:57:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:33,897 INFO L93 Difference]: Finished difference Result 2157 states and 3262 transitions. [2020-10-12 20:57:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:33,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-12 20:57:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:33,899 INFO L225 Difference]: With dead ends: 2157 [2020-10-12 20:57:33,900 INFO L226 Difference]: Without dead ends: 1529 [2020-10-12 20:57:33,900 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 [2020-10-12 20:57:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2020-10-12 20:57:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1389. [2020-10-12 20:57:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2020-10-12 20:57:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 2117 transitions. [2020-10-12 20:57:33,933 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 2117 transitions. Word has length 128 [2020-10-12 20:57:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:33,934 INFO L479 AbstractCegarLoop]: Abstraction has 1389 states and 2117 transitions. [2020-10-12 20:57:33,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 2117 transitions. [2020-10-12 20:57:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-12 20:57:33,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:33,935 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:33,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 20:57:33,936 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:33,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1816888336, now seen corresponding path program 1 times [2020-10-12 20:57:33,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246055565] [2020-10-12 20:57:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:57:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:34,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:34,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:34,222 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:57:34,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246055565] [2020-10-12 20:57:34,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:34,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:34,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445611139] [2020-10-12 20:57:34,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:34,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:34,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:34,224 INFO L87 Difference]: Start difference. First operand 1389 states and 2117 transitions. Second operand 5 states. [2020-10-12 20:57:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:35,141 INFO L93 Difference]: Finished difference Result 2222 states and 3378 transitions. [2020-10-12 20:57:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:35,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-12 20:57:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:35,146 INFO L225 Difference]: With dead ends: 2222 [2020-10-12 20:57:35,146 INFO L226 Difference]: Without dead ends: 1517 [2020-10-12 20:57:35,147 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 [2020-10-12 20:57:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2020-10-12 20:57:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1341. [2020-10-12 20:57:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-12 20:57:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2029 transitions. [2020-10-12 20:57:35,181 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2029 transitions. Word has length 129 [2020-10-12 20:57:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:35,181 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 2029 transitions. [2020-10-12 20:57:35,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2029 transitions. [2020-10-12 20:57:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 20:57:35,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:35,184 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] [2020-10-12 20:57:35,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 20:57:35,184 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash -251584570, now seen corresponding path program 1 times [2020-10-12 20:57:35,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:35,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290844698] [2020-10-12 20:57:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:40,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:40,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 20:57:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:40,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:40,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:40,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:40,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290844698] [2020-10-12 20:57:40,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:40,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:57:40,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241182098] [2020-10-12 20:57:40,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:57:40,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:40,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:57:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:57:40,566 INFO L87 Difference]: Start difference. First operand 1341 states and 2029 transitions. Second operand 10 states. [2020-10-12 20:57:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:43,154 INFO L93 Difference]: Finished difference Result 4176 states and 6337 transitions. [2020-10-12 20:57:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:57:43,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-10-12 20:57:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:43,157 INFO L225 Difference]: With dead ends: 4176 [2020-10-12 20:57:43,157 INFO L226 Difference]: Without dead ends: 2868 [2020-10-12 20:57:43,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:57:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2020-10-12 20:57:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1980. [2020-10-12 20:57:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-10-12 20:57:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3034 transitions. [2020-10-12 20:57:43,210 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3034 transitions. Word has length 130 [2020-10-12 20:57:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:43,211 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 3034 transitions. [2020-10-12 20:57:43,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:57:43,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3034 transitions. [2020-10-12 20:57:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 20:57:43,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:43,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:43,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 20:57:43,213 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:43,214 INFO L82 PathProgramCache]: Analyzing trace with hash 589329904, now seen corresponding path program 1 times [2020-10-12 20:57:43,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:43,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056719742] [2020-10-12 20:57:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 20:57:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:57:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:57:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:48,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:48,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:48,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:48,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:48,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:48,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:57:48,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056719742] [2020-10-12 20:57:48,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:57:48,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:57:48,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522102093] [2020-10-12 20:57:48,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:57:48,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:57:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:57:48,450 INFO L87 Difference]: Start difference. First operand 1980 states and 3034 transitions. Second operand 10 states. [2020-10-12 20:57:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:50,771 INFO L93 Difference]: Finished difference Result 4440 states and 6772 transitions. [2020-10-12 20:57:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 20:57:50,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 131 [2020-10-12 20:57:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:50,774 INFO L225 Difference]: With dead ends: 4440 [2020-10-12 20:57:50,775 INFO L226 Difference]: Without dead ends: 2501 [2020-10-12 20:57:50,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:57:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2020-10-12 20:57:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2092. [2020-10-12 20:57:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2092 states. [2020-10-12 20:57:50,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3216 transitions. [2020-10-12 20:57:50,831 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3216 transitions. Word has length 131 [2020-10-12 20:57:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:50,831 INFO L479 AbstractCegarLoop]: Abstraction has 2092 states and 3216 transitions. [2020-10-12 20:57:50,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:57:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3216 transitions. [2020-10-12 20:57:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 20:57:50,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:50,835 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 20:57:50,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 20:57:50,835 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:50,835 INFO L82 PathProgramCache]: Analyzing trace with hash -465551498, now seen corresponding path program 1 times [2020-10-12 20:57:50,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:50,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854114901] [2020-10-12 20:57:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:50,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2280 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 20:57:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:57:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:53,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:53,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:53,196 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 20:57:53,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854114901] [2020-10-12 20:57:53,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:53,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:53,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380219083] [2020-10-12 20:57:53,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:53,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:53,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:53,198 INFO L87 Difference]: Start difference. First operand 2092 states and 3216 transitions. Second operand 5 states. [2020-10-12 20:57:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:53,923 INFO L93 Difference]: Finished difference Result 4235 states and 6482 transitions. [2020-10-12 20:57:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:53,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-12 20:57:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:53,926 INFO L225 Difference]: With dead ends: 4235 [2020-10-12 20:57:53,926 INFO L226 Difference]: Without dead ends: 2184 [2020-10-12 20:57:53,929 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 [2020-10-12 20:57:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-10-12 20:57:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2066. [2020-10-12 20:57:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2066 states. [2020-10-12 20:57:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 3152 transitions. [2020-10-12 20:57:53,982 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 3152 transitions. Word has length 134 [2020-10-12 20:57:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:53,982 INFO L479 AbstractCegarLoop]: Abstraction has 2066 states and 3152 transitions. [2020-10-12 20:57:53,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 3152 transitions. [2020-10-12 20:57:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 20:57:53,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:53,985 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:53,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 20:57:53,985 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1183989077, now seen corresponding path program 1 times [2020-10-12 20:57:53,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:53,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567893101] [2020-10-12 20:57:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 534 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:57:54,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:54,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:54,608 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:57:54,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567893101] [2020-10-12 20:57:54,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:54,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:54,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295616505] [2020-10-12 20:57:54,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:54,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:54,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:54,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:54,609 INFO L87 Difference]: Start difference. First operand 2066 states and 3152 transitions. Second operand 5 states. [2020-10-12 20:57:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:55,593 INFO L93 Difference]: Finished difference Result 4694 states and 7182 transitions. [2020-10-12 20:57:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:55,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-12 20:57:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:55,597 INFO L225 Difference]: With dead ends: 4694 [2020-10-12 20:57:55,597 INFO L226 Difference]: Without dead ends: 2669 [2020-10-12 20:57:55,599 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 [2020-10-12 20:57:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2020-10-12 20:57:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 2297. [2020-10-12 20:57:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-10-12 20:57:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 3557 transitions. [2020-10-12 20:57:55,655 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 3557 transitions. Word has length 137 [2020-10-12 20:57:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:55,656 INFO L479 AbstractCegarLoop]: Abstraction has 2297 states and 3557 transitions. [2020-10-12 20:57:55,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 3557 transitions. [2020-10-12 20:57:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-12 20:57:55,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:55,659 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:57:55,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 20:57:55,659 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:55,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1749561259, now seen corresponding path program 1 times [2020-10-12 20:57:55,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:55,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267313966] [2020-10-12 20:57:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:57:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 20:57:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:57:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:57:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:57:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:57:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:57:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:57:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:57:56,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267313966] [2020-10-12 20:57:56,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:57:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:57:56,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242057532] [2020-10-12 20:57:56,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:57:56,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:57:56,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:57:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:57:56,408 INFO L87 Difference]: Start difference. First operand 2297 states and 3557 transitions. Second operand 5 states. [2020-10-12 20:57:57,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:57:57,324 INFO L93 Difference]: Finished difference Result 4693 states and 7224 transitions. [2020-10-12 20:57:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:57:57,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-12 20:57:57,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:57:57,327 INFO L225 Difference]: With dead ends: 4693 [2020-10-12 20:57:57,327 INFO L226 Difference]: Without dead ends: 2437 [2020-10-12 20:57:57,330 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 [2020-10-12 20:57:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2020-10-12 20:57:57,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2231. [2020-10-12 20:57:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-12 20:57:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3425 transitions. [2020-10-12 20:57:57,386 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3425 transitions. Word has length 138 [2020-10-12 20:57:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:57:57,386 INFO L479 AbstractCegarLoop]: Abstraction has 2231 states and 3425 transitions. [2020-10-12 20:57:57,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:57:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3425 transitions. [2020-10-12 20:57:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 20:57:57,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:57:57,388 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:57:57,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 20:57:57,389 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:57:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:57:57,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1594830744, now seen corresponding path program 1 times [2020-10-12 20:57:57,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:57:57,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724041205] [2020-10-12 20:57:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:57:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:57:57,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:57:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2997 [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:00,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:58:00,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:00,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:00,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:58:00,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724041205] [2020-10-12 20:58:00,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:00,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:00,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540583504] [2020-10-12 20:58:00,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:00,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:00,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:00,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:00,505 INFO L87 Difference]: Start difference. First operand 2231 states and 3425 transitions. Second operand 5 states. [2020-10-12 20:58:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:01,326 INFO L93 Difference]: Finished difference Result 4593 states and 7036 transitions. [2020-10-12 20:58:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:01,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-12 20:58:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:01,329 INFO L225 Difference]: With dead ends: 4593 [2020-10-12 20:58:01,329 INFO L226 Difference]: Without dead ends: 2403 [2020-10-12 20:58:01,332 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 [2020-10-12 20:58:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2020-10-12 20:58:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2231. [2020-10-12 20:58:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-12 20:58:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3419 transitions. [2020-10-12 20:58:01,393 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3419 transitions. Word has length 139 [2020-10-12 20:58:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:01,393 INFO L479 AbstractCegarLoop]: Abstraction has 2231 states and 3419 transitions. [2020-10-12 20:58:01,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3419 transitions. [2020-10-12 20:58:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 20:58:01,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:01,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:58:01,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 20:58:01,396 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1143755699, now seen corresponding path program 1 times [2020-10-12 20:58:01,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:01,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992161165] [2020-10-12 20:58:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:04,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3069 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:58:04,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:04,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:04,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:04,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 20:58:04,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992161165] [2020-10-12 20:58:04,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:04,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:04,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298835175] [2020-10-12 20:58:04,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:04,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:04,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:04,577 INFO L87 Difference]: Start difference. First operand 2231 states and 3419 transitions. Second operand 5 states. [2020-10-12 20:58:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:05,434 INFO L93 Difference]: Finished difference Result 4581 states and 7012 transitions. [2020-10-12 20:58:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:05,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-12 20:58:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:05,437 INFO L225 Difference]: With dead ends: 4581 [2020-10-12 20:58:05,437 INFO L226 Difference]: Without dead ends: 2391 [2020-10-12 20:58:05,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2020-10-12 20:58:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2231. [2020-10-12 20:58:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-12 20:58:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3413 transitions. [2020-10-12 20:58:05,506 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3413 transitions. Word has length 140 [2020-10-12 20:58:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:05,506 INFO L479 AbstractCegarLoop]: Abstraction has 2231 states and 3413 transitions. [2020-10-12 20:58:05,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3413 transitions. [2020-10-12 20:58:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-12 20:58:05,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:05,509 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:05,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 20:58:05,509 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1563726807, now seen corresponding path program 1 times [2020-10-12 20:58:05,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:05,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398142761] [2020-10-12 20:58:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:06,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 20:58:08,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3301 [2020-10-12 20:58:08,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:58:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 20:58:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:08,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:08,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:08,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:08,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398142761] [2020-10-12 20:58:08,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:08,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:08,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908715620] [2020-10-12 20:58:08,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:08,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:08,915 INFO L87 Difference]: Start difference. First operand 2231 states and 3413 transitions. Second operand 5 states. [2020-10-12 20:58:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:09,873 INFO L93 Difference]: Finished difference Result 3158 states and 4814 transitions. [2020-10-12 20:58:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:09,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-12 20:58:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:09,875 INFO L225 Difference]: With dead ends: 3158 [2020-10-12 20:58:09,876 INFO L226 Difference]: Without dead ends: 2341 [2020-10-12 20:58:09,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2020-10-12 20:58:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2231. [2020-10-12 20:58:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-12 20:58:09,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 3411 transitions. [2020-10-12 20:58:09,931 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 3411 transitions. Word has length 142 [2020-10-12 20:58:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:09,931 INFO L479 AbstractCegarLoop]: Abstraction has 2231 states and 3411 transitions. [2020-10-12 20:58:09,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 3411 transitions. [2020-10-12 20:58:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-12 20:58:09,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:09,934 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:09,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 20:58:09,934 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:09,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:09,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1528678900, now seen corresponding path program 1 times [2020-10-12 20:58:09,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:09,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685231994] [2020-10-12 20:58:09,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 20:58:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:58:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:15,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 23 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:15,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685231994] [2020-10-12 20:58:15,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:15,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:58:15,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535832068] [2020-10-12 20:58:15,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:58:15,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:15,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:58:15,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:58:15,177 INFO L87 Difference]: Start difference. First operand 2231 states and 3411 transitions. Second operand 9 states. [2020-10-12 20:58:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:16,677 INFO L93 Difference]: Finished difference Result 4068 states and 6171 transitions. [2020-10-12 20:58:16,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 20:58:16,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-10-12 20:58:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:16,681 INFO L225 Difference]: With dead ends: 4068 [2020-10-12 20:58:16,681 INFO L226 Difference]: Without dead ends: 3271 [2020-10-12 20:58:16,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-12 20:58:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-12 20:58:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3070. [2020-10-12 20:58:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3070 states. [2020-10-12 20:58:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 4678 transitions. [2020-10-12 20:58:16,758 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 4678 transitions. Word has length 143 [2020-10-12 20:58:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:16,758 INFO L479 AbstractCegarLoop]: Abstraction has 3070 states and 4678 transitions. [2020-10-12 20:58:16,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:58:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 4678 transitions. [2020-10-12 20:58:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 20:58:16,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:16,761 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:16,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 20:58:16,762 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:16,762 INFO L82 PathProgramCache]: Analyzing trace with hash 177134039, now seen corresponding path program 1 times [2020-10-12 20:58:16,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:16,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380696514] [2020-10-12 20:58:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:19,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:58:21,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:21,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:21,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:21,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:21,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380696514] [2020-10-12 20:58:21,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:21,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:58:21,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77851790] [2020-10-12 20:58:21,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:58:21,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:21,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:58:21,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:21,906 INFO L87 Difference]: Start difference. First operand 3070 states and 4678 transitions. Second operand 6 states. [2020-10-12 20:58:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:23,435 INFO L93 Difference]: Finished difference Result 5696 states and 8689 transitions. [2020-10-12 20:58:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:58:23,435 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-12 20:58:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:23,439 INFO L225 Difference]: With dead ends: 5696 [2020-10-12 20:58:23,439 INFO L226 Difference]: Without dead ends: 4114 [2020-10-12 20:58:23,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:58:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2020-10-12 20:58:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 3064. [2020-10-12 20:58:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2020-10-12 20:58:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4672 transitions. [2020-10-12 20:58:23,521 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4672 transitions. Word has length 144 [2020-10-12 20:58:23,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:23,522 INFO L479 AbstractCegarLoop]: Abstraction has 3064 states and 4672 transitions. [2020-10-12 20:58:23,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:58:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4672 transitions. [2020-10-12 20:58:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:58:23,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:23,526 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:23,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-12 20:58:23,526 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash -528611332, now seen corresponding path program 1 times [2020-10-12 20:58:23,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:23,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647618041] [2020-10-12 20:58:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:23,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 20:58:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-12 20:58:28,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647618041] [2020-10-12 20:58:28,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:28,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:28,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026046807] [2020-10-12 20:58:28,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:28,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:28,650 INFO L87 Difference]: Start difference. First operand 3064 states and 4672 transitions. Second operand 5 states. [2020-10-12 20:58:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:29,547 INFO L93 Difference]: Finished difference Result 4808 states and 7309 transitions. [2020-10-12 20:58:29,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:29,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 20:58:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:29,551 INFO L225 Difference]: With dead ends: 4808 [2020-10-12 20:58:29,551 INFO L226 Difference]: Without dead ends: 3230 [2020-10-12 20:58:29,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:58:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2020-10-12 20:58:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3064. [2020-10-12 20:58:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2020-10-12 20:58:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4666 transitions. [2020-10-12 20:58:29,628 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4666 transitions. Word has length 151 [2020-10-12 20:58:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:29,628 INFO L479 AbstractCegarLoop]: Abstraction has 3064 states and 4666 transitions. [2020-10-12 20:58:29,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4666 transitions. [2020-10-12 20:58:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:58:29,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:29,632 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:58:29,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-12 20:58:29,632 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2034832142, now seen corresponding path program 1 times [2020-10-12 20:58:29,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:29,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041702509] [2020-10-12 20:58:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:30,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:30,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 20:58:30,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 20:58:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:30,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 20:58:30,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041702509] [2020-10-12 20:58:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247370489] [2020-10-12 20:58:30,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:30,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:30,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:30,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:30,841 INFO L87 Difference]: Start difference. First operand 3064 states and 4666 transitions. Second operand 5 states. [2020-10-12 20:58:31,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:31,873 INFO L93 Difference]: Finished difference Result 5851 states and 8943 transitions. [2020-10-12 20:58:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:31,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:58:31,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:31,877 INFO L225 Difference]: With dead ends: 5851 [2020-10-12 20:58:31,877 INFO L226 Difference]: Without dead ends: 3667 [2020-10-12 20:58:31,879 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 [2020-10-12 20:58:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2020-10-12 20:58:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3295. [2020-10-12 20:58:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3295 states. [2020-10-12 20:58:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 5071 transitions. [2020-10-12 20:58:31,961 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 5071 transitions. Word has length 153 [2020-10-12 20:58:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:31,962 INFO L479 AbstractCegarLoop]: Abstraction has 3295 states and 5071 transitions. [2020-10-12 20:58:31,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 5071 transitions. [2020-10-12 20:58:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:58:31,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:31,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-12 20:58:31,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-12 20:58:31,965 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1546196056, now seen corresponding path program 1 times [2020-10-12 20:58:31,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:31,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943033088] [2020-10-12 20:58:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-12 20:58:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 20:58:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:33,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:33,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 20:58:33,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943033088] [2020-10-12 20:58:33,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:33,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:33,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390629462] [2020-10-12 20:58:33,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:33,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:33,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:33,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:33,366 INFO L87 Difference]: Start difference. First operand 3295 states and 5071 transitions. Second operand 5 states. [2020-10-12 20:58:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:34,227 INFO L93 Difference]: Finished difference Result 5874 states and 9021 transitions. [2020-10-12 20:58:34,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:34,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:58:34,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:34,231 INFO L225 Difference]: With dead ends: 5874 [2020-10-12 20:58:34,232 INFO L226 Difference]: Without dead ends: 3459 [2020-10-12 20:58:34,235 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 [2020-10-12 20:58:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2020-10-12 20:58:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3241. [2020-10-12 20:58:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-10-12 20:58:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4963 transitions. [2020-10-12 20:58:34,344 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4963 transitions. Word has length 154 [2020-10-12 20:58:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:34,344 INFO L479 AbstractCegarLoop]: Abstraction has 3241 states and 4963 transitions. [2020-10-12 20:58:34,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4963 transitions. [2020-10-12 20:58:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:58:34,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:34,347 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-10-12 20:58:34,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-12 20:58:34,347 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:34,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:34,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1178827798, now seen corresponding path program 1 times [2020-10-12 20:58:34,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:34,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293298135] [2020-10-12 20:58:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:58:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-12 20:58:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:58:34,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:34,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:34,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:34,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 20:58:34,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293298135] [2020-10-12 20:58:34,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:58:34,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:58:34,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830742722] [2020-10-12 20:58:34,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:58:34,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:58:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:58:34,661 INFO L87 Difference]: Start difference. First operand 3241 states and 4963 transitions. Second operand 5 states. [2020-10-12 20:58:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:58:35,553 INFO L93 Difference]: Finished difference Result 4858 states and 7412 transitions. [2020-10-12 20:58:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:58:35,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:58:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:58:35,557 INFO L225 Difference]: With dead ends: 4858 [2020-10-12 20:58:35,557 INFO L226 Difference]: Without dead ends: 3413 [2020-10-12 20:58:35,559 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 [2020-10-12 20:58:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2020-10-12 20:58:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 3241. [2020-10-12 20:58:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2020-10-12 20:58:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4959 transitions. [2020-10-12 20:58:35,640 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4959 transitions. Word has length 157 [2020-10-12 20:58:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:58:35,641 INFO L479 AbstractCegarLoop]: Abstraction has 3241 states and 4959 transitions. [2020-10-12 20:58:35,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:58:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4959 transitions. [2020-10-12 20:58:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 20:58:35,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:58:35,643 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:58:35,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-12 20:58:35,644 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:58:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:58:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1492924422, now seen corresponding path program 2 times [2020-10-12 20:58:35,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:58:35,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907677011] [2020-10-12 20:58:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:58:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:58:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:58:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:58:40,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 20:58:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:58:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 20:58:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:58:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:58:41,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:58:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:58:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:58:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:58:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:58:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 23 proven. 117 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-12 20:58:41,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907677011] [2020-10-12 20:58:41,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:58:41,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 20:58:41,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926170885] [2020-10-12 20:58:41,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:58:41,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:58:41,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:58:41,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:58:41,203 INFO L87 Difference]: Start difference. First operand 3241 states and 4959 transitions. Second operand 10 states.