/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:00:15,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:00:15,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:00:15,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:00:15,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:00:15,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:00:15,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:00:15,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:00:15,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:00:15,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:00:15,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:00:15,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:00:15,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:00:15,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:00:15,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:00:15,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:00:15,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:00:15,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:00:15,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:00:15,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:00:15,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:00:15,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:00:15,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:00:15,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:00:15,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:00:15,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:00:15,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:00:15,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:00:15,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:00:15,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:00:15,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:00:15,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:00:15,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:00:15,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:00:15,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:00:15,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:00:15,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:00:15,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:00:15,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:00:15,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:00:15,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:00:15,665 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 [2020-10-14 10:00:15,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:00:15,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:00:15,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:00:15,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:00:15,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:00:15,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:00:15,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:00:15,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:00:15,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:00:15,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:00:15,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:00:15,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:00:15,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:00:15,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:00:15,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:00:15,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:00:15,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:00:15,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:00:15,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:00:15,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:00:15,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:00:15,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:00:15,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:00:15,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:00:15,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:00:15,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:00:15,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:00:15,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:00:15,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:00:15,706 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 10:00:15,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:00:16,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:00:16,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:00:16,026 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:00:16,027 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:00:16,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-14 10:00:16,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ef89df4/d98df7ff7c864e759ed3c8ee133c2940/FLAG8bdbad3a7 [2020-10-14 10:00:16,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:00:16,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.01.i.cil-1.c [2020-10-14 10:00:16,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ef89df4/d98df7ff7c864e759ed3c8ee133c2940/FLAG8bdbad3a7 [2020-10-14 10:00:16,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00ef89df4/d98df7ff7c864e759ed3c8ee133c2940 [2020-10-14 10:00:16,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:00:16,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:00:16,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:16,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:00:16,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:00:16,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:16" (1/1) ... [2020-10-14 10:00:16,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3837a877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:16, skipping insertion in model container [2020-10-14 10:00:16,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:16" (1/1) ... [2020-10-14 10:00:16,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:00:17,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:00:17,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:17,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:00:17,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:00:17,835 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:00:17,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17 WrapperNode [2020-10-14 10:00:17,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:00:17,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:00:17,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:00:17,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:00:17,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:17,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:17,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:17,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:18,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:18,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:18,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (1/1) ... [2020-10-14 10:00:18,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:00:18,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:00:18,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:00:18,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:00:18,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (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 [2020-10-14 10:00:18,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:00:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:00:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:00:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:00:18,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:00:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:00:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:00:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:00:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:00:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:00:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:00:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:00:18,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:00:18,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:00:18,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:00:18,100 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:00:18,100 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:00:18,100 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:00:18,100 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:00:18,100 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:00:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:00:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:00:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:00:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:00:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:00:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:00:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:00:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:00:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:00:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:00:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:00:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:00:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:00:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:00:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:00:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:00:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:00:18,528 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:00:19,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:00:19,120 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:00:19,142 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:00:19,143 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:00:19,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:19 BoogieIcfgContainer [2020-10-14 10:00:19,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:00:19,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:00:19,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:00:19,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:00:19,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:16" (1/3) ... [2020-10-14 10:00:19,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0a934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:19, skipping insertion in model container [2020-10-14 10:00:19,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:17" (2/3) ... [2020-10-14 10:00:19,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d0a934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:19, skipping insertion in model container [2020-10-14 10:00:19,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:19" (3/3) ... [2020-10-14 10:00:19,156 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-1.c [2020-10-14 10:00:19,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:00:19,175 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:00:19,190 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:00:19,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:00:19,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:00:19,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:00:19,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:00:19,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:00:19,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:00:19,218 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:00:19,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:00:19,241 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-14 10:00:19,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 10:00:19,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:19,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:19,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1486764871, now seen corresponding path program 1 times [2020-10-14 10:00:19,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:19,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120254073] [2020-10-14 10:00:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:20,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:20,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 10:00:20,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:20,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-14 10:00:20,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:20,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:00:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:00:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:00:20,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:20,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:20,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:20,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:00:20,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:20,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:00:20,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120254073] [2020-10-14 10:00:20,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:20,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:20,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815371190] [2020-10-14 10:00:20,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:20,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:20,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:20,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:20,732 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 4 states. [2020-10-14 10:00:21,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:21,378 INFO L93 Difference]: Finished difference Result 427 states and 714 transitions. [2020-10-14 10:00:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:21,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-14 10:00:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:21,396 INFO L225 Difference]: With dead ends: 427 [2020-10-14 10:00:21,396 INFO L226 Difference]: Without dead ends: 260 [2020-10-14 10:00:21,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-14 10:00:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2020-10-14 10:00:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-14 10:00:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 389 transitions. [2020-10-14 10:00:21,492 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 389 transitions. Word has length 52 [2020-10-14 10:00:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:21,494 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 389 transitions. [2020-10-14 10:00:21,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 389 transitions. [2020-10-14 10:00:21,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 10:00:21,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:21,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:21,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:00:21,505 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:21,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 415305612, now seen corresponding path program 1 times [2020-10-14 10:00:21,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:21,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226959967] [2020-10-14 10:00:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:22,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 10:00:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-14 10:00:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:22,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:00:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:00:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:22,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:22,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:22,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:00:22,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:22,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:22,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:22,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:22,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 10:00:22,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226959967] [2020-10-14 10:00:22,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:22,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:22,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112053960] [2020-10-14 10:00:22,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:22,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:22,862 INFO L87 Difference]: Start difference. First operand 260 states and 389 transitions. Second operand 4 states. [2020-10-14 10:00:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:23,284 INFO L93 Difference]: Finished difference Result 506 states and 766 transitions. [2020-10-14 10:00:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:23,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 10:00:23,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:23,288 INFO L225 Difference]: With dead ends: 506 [2020-10-14 10:00:23,288 INFO L226 Difference]: Without dead ends: 382 [2020-10-14 10:00:23,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-14 10:00:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-10-14 10:00:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-14 10:00:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 573 transitions. [2020-10-14 10:00:23,316 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 573 transitions. Word has length 69 [2020-10-14 10:00:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:23,317 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 573 transitions. [2020-10-14 10:00:23,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 573 transitions. [2020-10-14 10:00:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 10:00:23,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:23,322 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:23,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:00:23,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash 448059851, now seen corresponding path program 1 times [2020-10-14 10:00:23,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:23,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632267482] [2020-10-14 10:00:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:24,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 10:00:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-14 10:00:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:00:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 10:00:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:24,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:24,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:00:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:24,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:24,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 10:00:24,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632267482] [2020-10-14 10:00:24,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:24,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:24,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520522412] [2020-10-14 10:00:24,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:24,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:24,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:24,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:24,348 INFO L87 Difference]: Start difference. First operand 382 states and 573 transitions. Second operand 4 states. [2020-10-14 10:00:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:24,935 INFO L93 Difference]: Finished difference Result 750 states and 1134 transitions. [2020-10-14 10:00:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:24,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-14 10:00:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:24,940 INFO L225 Difference]: With dead ends: 750 [2020-10-14 10:00:24,940 INFO L226 Difference]: Without dead ends: 504 [2020-10-14 10:00:24,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-14 10:00:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-14 10:00:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-14 10:00:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 758 transitions. [2020-10-14 10:00:24,964 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 758 transitions. Word has length 91 [2020-10-14 10:00:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:24,965 INFO L479 AbstractCegarLoop]: Abstraction has 504 states and 758 transitions. [2020-10-14 10:00:24,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 758 transitions. [2020-10-14 10:00:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 10:00:24,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:24,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:00:24,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:00:24,970 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash 199604808, now seen corresponding path program 1 times [2020-10-14 10:00:24,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:24,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454507825] [2020-10-14 10:00:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:25,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 10:00:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 10:00:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:25,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 10:00:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:00:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:25,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:25,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:25,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:00:25,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:25,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:25,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:00:25,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454507825] [2020-10-14 10:00:25,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:25,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:25,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746811612] [2020-10-14 10:00:25,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:25,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:25,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:25,517 INFO L87 Difference]: Start difference. First operand 504 states and 758 transitions. Second operand 4 states. [2020-10-14 10:00:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:25,962 INFO L93 Difference]: Finished difference Result 994 states and 1504 transitions. [2020-10-14 10:00:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:25,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-14 10:00:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:25,967 INFO L225 Difference]: With dead ends: 994 [2020-10-14 10:00:25,967 INFO L226 Difference]: Without dead ends: 626 [2020-10-14 10:00:25,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-14 10:00:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2020-10-14 10:00:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-14 10:00:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 944 transitions. [2020-10-14 10:00:25,988 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 944 transitions. Word has length 132 [2020-10-14 10:00:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:25,989 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 944 transitions. [2020-10-14 10:00:25,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 944 transitions. [2020-10-14 10:00:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 10:00:25,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:25,992 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, 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] [2020-10-14 10:00:25,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:00:25,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash 130034942, now seen corresponding path program 1 times [2020-10-14 10:00:25,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:25,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850606495] [2020-10-14 10:00:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:26,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 10:00:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:00:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 10:00:31,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:31,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:00:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-14 10:00:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:00:31,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:00:31,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:31,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:31,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:31,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:00:31,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:31,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:31,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:31,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 10:00:31,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850606495] [2020-10-14 10:00:31,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:31,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:00:31,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945125341] [2020-10-14 10:00:31,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:00:31,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:00:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:31,215 INFO L87 Difference]: Start difference. First operand 626 states and 944 transitions. Second operand 4 states. [2020-10-14 10:00:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:32,015 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2020-10-14 10:00:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:00:32,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-14 10:00:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:32,024 INFO L225 Difference]: With dead ends: 1234 [2020-10-14 10:00:32,024 INFO L226 Difference]: Without dead ends: 744 [2020-10-14 10:00:32,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:00:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-14 10:00:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2020-10-14 10:00:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-14 10:00:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1121 transitions. [2020-10-14 10:00:32,059 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1121 transitions. Word has length 171 [2020-10-14 10:00:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:32,060 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1121 transitions. [2020-10-14 10:00:32,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:00:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1121 transitions. [2020-10-14 10:00:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 10:00:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:32,069 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:00:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:00:32,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:32,071 INFO L82 PathProgramCache]: Analyzing trace with hash 900021262, now seen corresponding path program 1 times [2020-10-14 10:00:32,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:32,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644613871] [2020-10-14 10:00:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:32,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:32,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:37,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 10:00:37,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 10:00:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:37,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 10:00:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:00:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:37,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:37,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:00:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:37,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:37,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:00:37,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644613871] [2020-10-14 10:00:37,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:37,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:37,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513660748] [2020-10-14 10:00:37,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:37,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:37,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:37,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:37,480 INFO L87 Difference]: Start difference. First operand 744 states and 1121 transitions. Second operand 5 states. [2020-10-14 10:00:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:38,714 INFO L93 Difference]: Finished difference Result 2098 states and 3173 transitions. [2020-10-14 10:00:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:38,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-14 10:00:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:38,723 INFO L225 Difference]: With dead ends: 2098 [2020-10-14 10:00:38,724 INFO L226 Difference]: Without dead ends: 1368 [2020-10-14 10:00:38,726 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 [2020-10-14 10:00:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2020-10-14 10:00:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1014. [2020-10-14 10:00:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-14 10:00:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1613 transitions. [2020-10-14 10:00:38,768 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1613 transitions. Word has length 214 [2020-10-14 10:00:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:38,769 INFO L479 AbstractCegarLoop]: Abstraction has 1014 states and 1613 transitions. [2020-10-14 10:00:38,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1613 transitions. [2020-10-14 10:00:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 10:00:38,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:38,774 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:00:38,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:00:38,774 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1486297484, now seen corresponding path program 1 times [2020-10-14 10:00:38,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:38,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937884278] [2020-10-14 10:00:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:43,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 10:00:43,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:00:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 10:00:43,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:43,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 10:00:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:00:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:43,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:43,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:43,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:00:43,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:43,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:00:44,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937884278] [2020-10-14 10:00:44,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:44,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:44,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794338877] [2020-10-14 10:00:44,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:44,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:44,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:44,019 INFO L87 Difference]: Start difference. First operand 1014 states and 1613 transitions. Second operand 5 states. [2020-10-14 10:00:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:45,446 INFO L93 Difference]: Finished difference Result 2626 states and 4145 transitions. [2020-10-14 10:00:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:45,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-14 10:00:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:45,459 INFO L225 Difference]: With dead ends: 2626 [2020-10-14 10:00:45,460 INFO L226 Difference]: Without dead ends: 1626 [2020-10-14 10:00:45,463 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 [2020-10-14 10:00:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-14 10:00:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1008. [2020-10-14 10:00:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-14 10:00:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1607 transitions. [2020-10-14 10:00:45,520 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1607 transitions. Word has length 214 [2020-10-14 10:00:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:45,521 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1607 transitions. [2020-10-14 10:00:45,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1607 transitions. [2020-10-14 10:00:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 10:00:45,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:45,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:00:45,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:00:45,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1243606666, now seen corresponding path program 1 times [2020-10-14 10:00:45,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:45,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692819285] [2020-10-14 10:00:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:45,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:45,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:50,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:50,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 10:00:50,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:50,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:00:50,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:50,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:50,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:50,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 10:00:50,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:00:50,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:50,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:50,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:50,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:50,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:00:50,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:50,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:50,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:00:50,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692819285] [2020-10-14 10:00:50,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:50,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:50,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428188844] [2020-10-14 10:00:50,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:50,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:50,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:50,791 INFO L87 Difference]: Start difference. First operand 1008 states and 1607 transitions. Second operand 5 states. [2020-10-14 10:00:51,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:51,862 INFO L93 Difference]: Finished difference Result 2596 states and 4108 transitions. [2020-10-14 10:00:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:51,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 10:00:51,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:51,873 INFO L225 Difference]: With dead ends: 2596 [2020-10-14 10:00:51,873 INFO L226 Difference]: Without dead ends: 1590 [2020-10-14 10:00:51,876 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 [2020-10-14 10:00:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-10-14 10:00:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1266. [2020-10-14 10:00:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-14 10:00:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2081 transitions. [2020-10-14 10:00:51,917 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2081 transitions. Word has length 215 [2020-10-14 10:00:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:51,918 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 2081 transitions. [2020-10-14 10:00:51,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2081 transitions. [2020-10-14 10:00:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-14 10:00:51,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:51,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:00:51,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:00:51,923 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:51,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2056666932, now seen corresponding path program 1 times [2020-10-14 10:00:51,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:51,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680342749] [2020-10-14 10:00:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:51,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:56,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:56,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 10:00:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:00:56,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:00:56,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:56,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:00:56,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-14 10:00:56,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:00:56,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:00:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:00:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:00:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:00:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:00:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:00:57,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:00:57,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:00:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:00:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:00:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:00:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:00:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 10:00:57,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680342749] [2020-10-14 10:00:57,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:00:57,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:00:57,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960853875] [2020-10-14 10:00:57,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:00:57,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:00:57,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:00:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:00:57,141 INFO L87 Difference]: Start difference. First operand 1266 states and 2081 transitions. Second operand 5 states. [2020-10-14 10:00:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:00:58,228 INFO L93 Difference]: Finished difference Result 2848 states and 4570 transitions. [2020-10-14 10:00:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:00:58,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-14 10:00:58,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:00:58,237 INFO L225 Difference]: With dead ends: 2848 [2020-10-14 10:00:58,238 INFO L226 Difference]: Without dead ends: 1584 [2020-10-14 10:00:58,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:00:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2020-10-14 10:00:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1002. [2020-10-14 10:00:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 10:00:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1595 transitions. [2020-10-14 10:00:58,281 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1595 transitions. Word has length 215 [2020-10-14 10:00:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:00:58,282 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1595 transitions. [2020-10-14 10:00:58,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:00:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1595 transitions. [2020-10-14 10:00:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 10:00:58,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:00:58,287 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:00:58,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:00:58,287 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:00:58,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:00:58,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1346221412, now seen corresponding path program 1 times [2020-10-14 10:00:58,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:00:58,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680805268] [2020-10-14 10:00:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:00:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:00:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:00:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:03,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 10:01:03,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:03,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:01:03,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:03,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:03,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 10:01:03,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:03,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:03,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:03,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 10:01:03,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680805268] [2020-10-14 10:01:03,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:03,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:03,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303042279] [2020-10-14 10:01:03,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:03,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:03,459 INFO L87 Difference]: Start difference. First operand 1002 states and 1595 transitions. Second operand 5 states. [2020-10-14 10:01:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:04,472 INFO L93 Difference]: Finished difference Result 2602 states and 4109 transitions. [2020-10-14 10:01:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:04,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-14 10:01:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:04,481 INFO L225 Difference]: With dead ends: 2602 [2020-10-14 10:01:04,482 INFO L226 Difference]: Without dead ends: 1614 [2020-10-14 10:01:04,485 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 [2020-10-14 10:01:04,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-10-14 10:01:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1260. [2020-10-14 10:01:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2020-10-14 10:01:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 2075 transitions. [2020-10-14 10:01:04,557 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 2075 transitions. Word has length 227 [2020-10-14 10:01:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:04,558 INFO L479 AbstractCegarLoop]: Abstraction has 1260 states and 2075 transitions. [2020-10-14 10:01:04,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 2075 transitions. [2020-10-14 10:01:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 10:01:04,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:04,563 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:01:04,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:01:04,564 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:04,564 INFO L82 PathProgramCache]: Analyzing trace with hash 329560508, now seen corresponding path program 1 times [2020-10-14 10:01:04,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:04,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887589586] [2020-10-14 10:01:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:04,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:09,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 10:01:09,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:01:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 10:01:09,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:09,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 10:01:09,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:01:09,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:09,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 10:01:09,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887589586] [2020-10-14 10:01:09,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:09,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992225312] [2020-10-14 10:01:09,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:09,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:09,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:09,737 INFO L87 Difference]: Start difference. First operand 1260 states and 2075 transitions. Second operand 5 states. [2020-10-14 10:01:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:10,686 INFO L93 Difference]: Finished difference Result 2836 states and 4558 transitions. [2020-10-14 10:01:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:10,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2020-10-14 10:01:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:10,695 INFO L225 Difference]: With dead ends: 2836 [2020-10-14 10:01:10,696 INFO L226 Difference]: Without dead ends: 1578 [2020-10-14 10:01:10,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:01:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2020-10-14 10:01:10,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1002. [2020-10-14 10:01:10,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 10:01:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1595 transitions. [2020-10-14 10:01:10,736 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1595 transitions. Word has length 228 [2020-10-14 10:01:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:10,737 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1595 transitions. [2020-10-14 10:01:10,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1595 transitions. [2020-10-14 10:01:10,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 10:01:10,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:10,742 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:10,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:01:10,742 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:10,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:10,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2137593802, now seen corresponding path program 1 times [2020-10-14 10:01:10,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:10,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181095083] [2020-10-14 10:01:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 10:01:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 10:01:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:15,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:15,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:15,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:15,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:15,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:15,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:15,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-14 10:01:16,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181095083] [2020-10-14 10:01:16,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:16,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:16,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423622695] [2020-10-14 10:01:16,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:16,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:16,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:16,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:16,103 INFO L87 Difference]: Start difference. First operand 1002 states and 1595 transitions. Second operand 5 states. [2020-10-14 10:01:16,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:16,921 INFO L93 Difference]: Finished difference Result 2971 states and 4734 transitions. [2020-10-14 10:01:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:16,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-14 10:01:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:16,933 INFO L225 Difference]: With dead ends: 2971 [2020-10-14 10:01:16,933 INFO L226 Difference]: Without dead ends: 1983 [2020-10-14 10:01:16,938 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 [2020-10-14 10:01:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2020-10-14 10:01:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1981. [2020-10-14 10:01:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-14 10:01:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3137 transitions. [2020-10-14 10:01:17,030 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3137 transitions. Word has length 229 [2020-10-14 10:01:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:17,030 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 3137 transitions. [2020-10-14 10:01:17,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3137 transitions. [2020-10-14 10:01:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 10:01:17,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:17,036 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:17,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:01:17,036 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:17,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash -2128873204, now seen corresponding path program 1 times [2020-10-14 10:01:17,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:17,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438556870] [2020-10-14 10:01:17,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:17,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:17,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-14 10:01:22,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:01:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:01:22,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:22,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:01:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:01:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:22,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:22,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:22,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 10:01:22,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438556870] [2020-10-14 10:01:22,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:22,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:22,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425711894] [2020-10-14 10:01:22,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:22,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:22,219 INFO L87 Difference]: Start difference. First operand 1981 states and 3137 transitions. Second operand 5 states. [2020-10-14 10:01:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:23,529 INFO L93 Difference]: Finished difference Result 5159 states and 8097 transitions. [2020-10-14 10:01:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:23,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-14 10:01:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:23,546 INFO L225 Difference]: With dead ends: 5159 [2020-10-14 10:01:23,547 INFO L226 Difference]: Without dead ends: 3197 [2020-10-14 10:01:23,551 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 [2020-10-14 10:01:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2020-10-14 10:01:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 2443. [2020-10-14 10:01:23,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-14 10:01:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3983 transitions. [2020-10-14 10:01:23,639 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3983 transitions. Word has length 229 [2020-10-14 10:01:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:23,640 INFO L479 AbstractCegarLoop]: Abstraction has 2443 states and 3983 transitions. [2020-10-14 10:01:23,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3983 transitions. [2020-10-14 10:01:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 10:01:23,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:23,646 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:23,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:01:23,646 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash 722362012, now seen corresponding path program 1 times [2020-10-14 10:01:23,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:23,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378395535] [2020-10-14 10:01:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:23,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:28,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 10:01:28,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:01:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:28,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:28,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:28,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:28,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:28,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:28,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:28,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:28,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 10:01:28,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378395535] [2020-10-14 10:01:28,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:28,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:28,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664842039] [2020-10-14 10:01:28,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:28,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:28,851 INFO L87 Difference]: Start difference. First operand 2443 states and 3983 transitions. Second operand 5 states. [2020-10-14 10:01:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:30,017 INFO L93 Difference]: Finished difference Result 6083 states and 9789 transitions. [2020-10-14 10:01:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:30,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-14 10:01:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:30,037 INFO L225 Difference]: With dead ends: 6083 [2020-10-14 10:01:30,037 INFO L226 Difference]: Without dead ends: 3659 [2020-10-14 10:01:30,044 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 [2020-10-14 10:01:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2020-10-14 10:01:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 2953. [2020-10-14 10:01:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2953 states. [2020-10-14 10:01:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2953 states to 2953 states and 4925 transitions. [2020-10-14 10:01:30,154 INFO L78 Accepts]: Start accepts. Automaton has 2953 states and 4925 transitions. Word has length 230 [2020-10-14 10:01:30,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:30,155 INFO L479 AbstractCegarLoop]: Abstraction has 2953 states and 4925 transitions. [2020-10-14 10:01:30,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:30,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2953 states and 4925 transitions. [2020-10-14 10:01:30,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 10:01:30,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:30,163 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:30,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:01:30,163 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:30,163 INFO L82 PathProgramCache]: Analyzing trace with hash 31137212, now seen corresponding path program 1 times [2020-10-14 10:01:30,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:30,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693253199] [2020-10-14 10:01:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:30,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 10:01:35,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:01:35,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:01:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:35,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 10:01:35,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693253199] [2020-10-14 10:01:35,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:35,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:35,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719661124] [2020-10-14 10:01:35,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:35,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:35,342 INFO L87 Difference]: Start difference. First operand 2953 states and 4925 transitions. Second operand 5 states. [2020-10-14 10:01:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:36,271 INFO L93 Difference]: Finished difference Result 6547 states and 10670 transitions. [2020-10-14 10:01:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:36,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-14 10:01:36,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:36,289 INFO L225 Difference]: With dead ends: 6547 [2020-10-14 10:01:36,289 INFO L226 Difference]: Without dead ends: 3589 [2020-10-14 10:01:36,296 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 [2020-10-14 10:01:36,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-10-14 10:01:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2443. [2020-10-14 10:01:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-10-14 10:01:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3983 transitions. [2020-10-14 10:01:36,382 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3983 transitions. Word has length 231 [2020-10-14 10:01:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:36,382 INFO L479 AbstractCegarLoop]: Abstraction has 2443 states and 3983 transitions. [2020-10-14 10:01:36,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3983 transitions. [2020-10-14 10:01:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 10:01:36,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:36,388 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:36,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:01:36,388 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:36,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1244738629, now seen corresponding path program 1 times [2020-10-14 10:01:36,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:36,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051311126] [2020-10-14 10:01:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:41,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:41,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 10:01:41,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:01:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 10:01:41,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:41,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 10:01:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:01:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:41,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 10:01:41,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051311126] [2020-10-14 10:01:41,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:41,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:41,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021231440] [2020-10-14 10:01:41,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:41,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:41,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:41,714 INFO L87 Difference]: Start difference. First operand 2443 states and 3983 transitions. Second operand 5 states. [2020-10-14 10:01:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:42,545 INFO L93 Difference]: Finished difference Result 6747 states and 10957 transitions. [2020-10-14 10:01:42,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:42,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-10-14 10:01:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:42,557 INFO L225 Difference]: With dead ends: 6747 [2020-10-14 10:01:42,557 INFO L226 Difference]: Without dead ends: 4323 [2020-10-14 10:01:42,564 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 [2020-10-14 10:01:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2020-10-14 10:01:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 2963. [2020-10-14 10:01:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-14 10:01:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4935 transitions. [2020-10-14 10:01:42,667 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4935 transitions. Word has length 231 [2020-10-14 10:01:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:42,668 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 4935 transitions. [2020-10-14 10:01:42,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4935 transitions. [2020-10-14 10:01:42,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 10:01:42,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:42,676 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:01:42,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:01:42,676 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1094330997, now seen corresponding path program 1 times [2020-10-14 10:01:42,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:42,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252379748] [2020-10-14 10:01:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:42,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:47,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:47,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 10:01:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:01:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:47,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 10:01:47,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252379748] [2020-10-14 10:01:47,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:47,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:47,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354500821] [2020-10-14 10:01:47,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:47,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:47,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:47,856 INFO L87 Difference]: Start difference. First operand 2963 states and 4935 transitions. Second operand 5 states. [2020-10-14 10:01:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:48,725 INFO L93 Difference]: Finished difference Result 7267 states and 11921 transitions. [2020-10-14 10:01:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:48,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 10:01:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:48,736 INFO L225 Difference]: With dead ends: 7267 [2020-10-14 10:01:48,737 INFO L226 Difference]: Without dead ends: 4299 [2020-10-14 10:01:48,744 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 [2020-10-14 10:01:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2020-10-14 10:01:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 2963. [2020-10-14 10:01:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-14 10:01:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4935 transitions. [2020-10-14 10:01:48,841 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4935 transitions. Word has length 232 [2020-10-14 10:01:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:48,841 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 4935 transitions. [2020-10-14 10:01:48,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4935 transitions. [2020-10-14 10:01:48,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 10:01:48,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:48,849 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:01:48,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:01:48,849 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1933423797, now seen corresponding path program 1 times [2020-10-14 10:01:48,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:48,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768897033] [2020-10-14 10:01:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:48,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:49,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:50,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:53,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:53,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 10:01:53,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:01:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:53,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:01:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:53,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:01:53,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:01:53,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:01:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:01:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-14 10:01:54,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768897033] [2020-10-14 10:01:54,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:01:54,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:01:54,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069823011] [2020-10-14 10:01:54,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:01:54,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:01:54,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:01:54,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:01:54,004 INFO L87 Difference]: Start difference. First operand 2963 states and 4935 transitions. Second operand 5 states. [2020-10-14 10:01:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:01:55,004 INFO L93 Difference]: Finished difference Result 7065 states and 11620 transitions. [2020-10-14 10:01:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:01:55,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-14 10:01:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:01:55,016 INFO L225 Difference]: With dead ends: 7065 [2020-10-14 10:01:55,016 INFO L226 Difference]: Without dead ends: 4109 [2020-10-14 10:01:55,022 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 [2020-10-14 10:01:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2020-10-14 10:01:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 2963. [2020-10-14 10:01:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-14 10:01:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4935 transitions. [2020-10-14 10:01:55,116 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4935 transitions. Word has length 232 [2020-10-14 10:01:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:01:55,117 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 4935 transitions. [2020-10-14 10:01:55,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:01:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4935 transitions. [2020-10-14 10:01:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 10:01:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:01:55,125 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:01:55,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:01:55,125 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:01:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:01:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1697948709, now seen corresponding path program 1 times [2020-10-14 10:01:55,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:01:55,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100952726] [2020-10-14 10:01:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:01:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:01:55,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:55,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:01:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:00,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:02:00,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 10:02:00,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 10:02:00,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:00,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:00,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:02:00,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:00,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:00,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-14 10:02:00,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100952726] [2020-10-14 10:02:00,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:00,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:00,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922928245] [2020-10-14 10:02:00,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:00,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:00,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:00,320 INFO L87 Difference]: Start difference. First operand 2963 states and 4935 transitions. Second operand 5 states. [2020-10-14 10:02:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:01,396 INFO L93 Difference]: Finished difference Result 7065 states and 11620 transitions. [2020-10-14 10:02:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:01,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 10:02:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:01,405 INFO L225 Difference]: With dead ends: 7065 [2020-10-14 10:02:01,405 INFO L226 Difference]: Without dead ends: 4109 [2020-10-14 10:02:01,411 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 [2020-10-14 10:02:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2020-10-14 10:02:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 2951. [2020-10-14 10:02:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-14 10:02:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4923 transitions. [2020-10-14 10:02:01,523 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4923 transitions. Word has length 237 [2020-10-14 10:02:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:01,523 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 4923 transitions. [2020-10-14 10:02:01,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4923 transitions. [2020-10-14 10:02:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 10:02:01,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:01,533 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:02:01,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:02:01,533 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2085732533, now seen corresponding path program 1 times [2020-10-14 10:02:01,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:01,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132269435] [2020-10-14 10:02:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:01,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:06,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:06,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:06,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:06,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:06,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:06,695 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-14 10:02:06,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132269435] [2020-10-14 10:02:06,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:06,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:06,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698307445] [2020-10-14 10:02:06,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:06,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:06,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:06,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:06,697 INFO L87 Difference]: Start difference. First operand 2951 states and 4923 transitions. Second operand 5 states. [2020-10-14 10:02:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:07,666 INFO L93 Difference]: Finished difference Result 7041 states and 11596 transitions. [2020-10-14 10:02:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:07,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 10:02:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:07,676 INFO L225 Difference]: With dead ends: 7041 [2020-10-14 10:02:07,676 INFO L226 Difference]: Without dead ends: 4097 [2020-10-14 10:02:07,681 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 [2020-10-14 10:02:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2020-10-14 10:02:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2951. [2020-10-14 10:02:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-14 10:02:07,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4923 transitions. [2020-10-14 10:02:07,781 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4923 transitions. Word has length 237 [2020-10-14 10:02:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:07,782 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 4923 transitions. [2020-10-14 10:02:07,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4923 transitions. [2020-10-14 10:02:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 10:02:07,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:07,789 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:02:07,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:02:07,789 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:07,790 INFO L82 PathProgramCache]: Analyzing trace with hash -301965807, now seen corresponding path program 1 times [2020-10-14 10:02:07,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:07,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224845952] [2020-10-14 10:02:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:07,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:12,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:12,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 10:02:12,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:02:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:12,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:02:12,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:12,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-14 10:02:12,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224845952] [2020-10-14 10:02:12,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:12,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:12,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095298443] [2020-10-14 10:02:12,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:12,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:12,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:12,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:12,950 INFO L87 Difference]: Start difference. First operand 2951 states and 4923 transitions. Second operand 5 states. [2020-10-14 10:02:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:13,903 INFO L93 Difference]: Finished difference Result 7041 states and 11596 transitions. [2020-10-14 10:02:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:13,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-14 10:02:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:13,910 INFO L225 Difference]: With dead ends: 7041 [2020-10-14 10:02:13,910 INFO L226 Difference]: Without dead ends: 4097 [2020-10-14 10:02:13,915 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 [2020-10-14 10:02:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2020-10-14 10:02:14,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2951. [2020-10-14 10:02:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-14 10:02:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4923 transitions. [2020-10-14 10:02:14,019 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4923 transitions. Word has length 240 [2020-10-14 10:02:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:14,019 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 4923 transitions. [2020-10-14 10:02:14,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4923 transitions. [2020-10-14 10:02:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 10:02:14,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:14,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:14,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:02:14,027 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:14,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:14,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1267543338, now seen corresponding path program 1 times [2020-10-14 10:02:14,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:14,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635047190] [2020-10-14 10:02:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:14,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:19,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 10:02:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:19,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:19,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:19,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:19,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:02:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-10-14 10:02:19,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635047190] [2020-10-14 10:02:19,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:19,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:19,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166139419] [2020-10-14 10:02:19,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:19,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:19,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:19,200 INFO L87 Difference]: Start difference. First operand 2951 states and 4923 transitions. Second operand 5 states. [2020-10-14 10:02:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:20,193 INFO L93 Difference]: Finished difference Result 7041 states and 11596 transitions. [2020-10-14 10:02:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:20,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-14 10:02:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:20,201 INFO L225 Difference]: With dead ends: 7041 [2020-10-14 10:02:20,201 INFO L226 Difference]: Without dead ends: 4097 [2020-10-14 10:02:20,206 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 [2020-10-14 10:02:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2020-10-14 10:02:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2951. [2020-10-14 10:02:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-14 10:02:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4923 transitions. [2020-10-14 10:02:20,319 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4923 transitions. Word has length 243 [2020-10-14 10:02:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:20,320 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 4923 transitions. [2020-10-14 10:02:20,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4923 transitions. [2020-10-14 10:02:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 10:02:20,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:20,327 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:20,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:02:20,328 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:20,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:20,328 INFO L82 PathProgramCache]: Analyzing trace with hash 521290504, now seen corresponding path program 1 times [2020-10-14 10:02:20,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:20,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736618192] [2020-10-14 10:02:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-10-14 10:02:25,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:02:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:25,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-14 10:02:25,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736618192] [2020-10-14 10:02:25,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:25,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:25,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314613055] [2020-10-14 10:02:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:25,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:25,515 INFO L87 Difference]: Start difference. First operand 2951 states and 4923 transitions. Second operand 5 states. [2020-10-14 10:02:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:26,502 INFO L93 Difference]: Finished difference Result 7539 states and 12514 transitions. [2020-10-14 10:02:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:26,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-14 10:02:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:26,509 INFO L225 Difference]: With dead ends: 7539 [2020-10-14 10:02:26,509 INFO L226 Difference]: Without dead ends: 4595 [2020-10-14 10:02:26,514 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 [2020-10-14 10:02:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2020-10-14 10:02:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 2951. [2020-10-14 10:02:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2951 states. [2020-10-14 10:02:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4923 transitions. [2020-10-14 10:02:26,625 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4923 transitions. Word has length 245 [2020-10-14 10:02:26,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:26,626 INFO L479 AbstractCegarLoop]: Abstraction has 2951 states and 4923 transitions. [2020-10-14 10:02:26,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4923 transitions. [2020-10-14 10:02:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 10:02:26,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:26,634 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:02:26,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:02:26,634 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:26,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:26,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1442657436, now seen corresponding path program 1 times [2020-10-14 10:02:26,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:26,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297574729] [2020-10-14 10:02:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:26,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:31,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 10:02:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:02:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:31,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:31,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-14 10:02:31,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297574729] [2020-10-14 10:02:31,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:31,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:31,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276150461] [2020-10-14 10:02:31,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:31,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:31,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:31,806 INFO L87 Difference]: Start difference. First operand 2951 states and 4923 transitions. Second operand 5 states. [2020-10-14 10:02:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:32,799 INFO L93 Difference]: Finished difference Result 6577 states and 10723 transitions. [2020-10-14 10:02:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:32,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-10-14 10:02:32,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:32,804 INFO L225 Difference]: With dead ends: 6577 [2020-10-14 10:02:32,804 INFO L226 Difference]: Without dead ends: 3645 [2020-10-14 10:02:32,809 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 [2020-10-14 10:02:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2020-10-14 10:02:32,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 2963. [2020-10-14 10:02:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2963 states. [2020-10-14 10:02:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4935 transitions. [2020-10-14 10:02:32,889 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4935 transitions. Word has length 245 [2020-10-14 10:02:32,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:32,889 INFO L479 AbstractCegarLoop]: Abstraction has 2963 states and 4935 transitions. [2020-10-14 10:02:32,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4935 transitions. [2020-10-14 10:02:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 10:02:32,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:32,896 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1] [2020-10-14 10:02:32,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:02:32,897 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1729829898, now seen corresponding path program 1 times [2020-10-14 10:02:32,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:32,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19360032] [2020-10-14 10:02:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:37,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:37,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 10:02:37,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:02:37,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 10:02:37,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:37,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 10:02:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:02:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:38,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:38,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:38,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:38,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-10-14 10:02:38,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19360032] [2020-10-14 10:02:38,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:38,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:38,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397401099] [2020-10-14 10:02:38,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:38,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:38,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:38,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:38,089 INFO L87 Difference]: Start difference. First operand 2963 states and 4935 transitions. Second operand 5 states. [2020-10-14 10:02:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:39,084 INFO L93 Difference]: Finished difference Result 7053 states and 11596 transitions. [2020-10-14 10:02:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:39,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-14 10:02:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:39,089 INFO L225 Difference]: With dead ends: 7053 [2020-10-14 10:02:39,090 INFO L226 Difference]: Without dead ends: 4109 [2020-10-14 10:02:39,094 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 [2020-10-14 10:02:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2020-10-14 10:02:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3425. [2020-10-14 10:02:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2020-10-14 10:02:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 5781 transitions. [2020-10-14 10:02:39,206 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 5781 transitions. Word has length 257 [2020-10-14 10:02:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:39,206 INFO L479 AbstractCegarLoop]: Abstraction has 3425 states and 5781 transitions. [2020-10-14 10:02:39,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 5781 transitions. [2020-10-14 10:02:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 10:02:39,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:39,218 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 10:02:39,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:02:39,218 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:39,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1387364478, now seen corresponding path program 1 times [2020-10-14 10:02:39,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:39,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124436262] [2020-10-14 10:02:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:44,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 10:02:44,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:02:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 10:02:44,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:44,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 10:02:44,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:02:44,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:44,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-10-14 10:02:44,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124436262] [2020-10-14 10:02:44,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:44,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:44,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010847488] [2020-10-14 10:02:44,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:44,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:44,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:44,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:44,358 INFO L87 Difference]: Start difference. First operand 3425 states and 5781 transitions. Second operand 5 states. [2020-10-14 10:02:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:45,349 INFO L93 Difference]: Finished difference Result 7467 states and 12366 transitions. [2020-10-14 10:02:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:45,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-14 10:02:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:45,355 INFO L225 Difference]: With dead ends: 7467 [2020-10-14 10:02:45,356 INFO L226 Difference]: Without dead ends: 4061 [2020-10-14 10:02:45,360 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 [2020-10-14 10:02:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2020-10-14 10:02:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3437. [2020-10-14 10:02:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-14 10:02:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5793 transitions. [2020-10-14 10:02:45,455 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5793 transitions. Word has length 258 [2020-10-14 10:02:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:45,456 INFO L479 AbstractCegarLoop]: Abstraction has 3437 states and 5793 transitions. [2020-10-14 10:02:45,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5793 transitions. [2020-10-14 10:02:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 10:02:45,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:45,463 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1] [2020-10-14 10:02:45,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:02:45,463 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:45,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1529107142, now seen corresponding path program 1 times [2020-10-14 10:02:45,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:45,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232555370] [2020-10-14 10:02:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:50,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:50,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 10:02:50,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:02:50,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:50,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:50,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:50,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:50,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:50,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:50,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:50,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 10:02:50,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232555370] [2020-10-14 10:02:50,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:50,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:50,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725175615] [2020-10-14 10:02:50,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:50,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:50,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:50,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:50,677 INFO L87 Difference]: Start difference. First operand 3437 states and 5793 transitions. Second operand 5 states. [2020-10-14 10:02:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:51,695 INFO L93 Difference]: Finished difference Result 8013 states and 13324 transitions. [2020-10-14 10:02:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:51,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-14 10:02:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:51,701 INFO L225 Difference]: With dead ends: 8013 [2020-10-14 10:02:51,701 INFO L226 Difference]: Without dead ends: 4595 [2020-10-14 10:02:51,706 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 [2020-10-14 10:02:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2020-10-14 10:02:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 3911. [2020-10-14 10:02:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2020-10-14 10:02:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6651 transitions. [2020-10-14 10:02:51,789 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6651 transitions. Word has length 258 [2020-10-14 10:02:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:51,790 INFO L479 AbstractCegarLoop]: Abstraction has 3911 states and 6651 transitions. [2020-10-14 10:02:51,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6651 transitions. [2020-10-14 10:02:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 10:02:51,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:51,797 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:51,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:02:51,798 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:51,798 INFO L82 PathProgramCache]: Analyzing trace with hash 2047512090, now seen corresponding path program 1 times [2020-10-14 10:02:51,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:51,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762150909] [2020-10-14 10:02:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:56,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 10:02:56,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:02:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:02:56,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:02:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:02:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:02:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:02:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:02:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:02:56,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:02:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:02:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:02:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:02:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:02:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 10:02:56,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762150909] [2020-10-14 10:02:56,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:02:56,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:02:56,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656716142] [2020-10-14 10:02:56,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:02:56,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:02:56,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:02:56,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:02:56,958 INFO L87 Difference]: Start difference. First operand 3911 states and 6651 transitions. Second operand 5 states. [2020-10-14 10:02:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:02:58,009 INFO L93 Difference]: Finished difference Result 8949 states and 15028 transitions. [2020-10-14 10:02:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:02:58,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-14 10:02:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:02:58,015 INFO L225 Difference]: With dead ends: 8949 [2020-10-14 10:02:58,015 INFO L226 Difference]: Without dead ends: 5057 [2020-10-14 10:02:58,020 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 [2020-10-14 10:02:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5057 states. [2020-10-14 10:02:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5057 to 3911. [2020-10-14 10:02:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2020-10-14 10:02:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6651 transitions. [2020-10-14 10:02:58,117 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6651 transitions. Word has length 259 [2020-10-14 10:02:58,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:02:58,117 INFO L479 AbstractCegarLoop]: Abstraction has 3911 states and 6651 transitions. [2020-10-14 10:02:58,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:02:58,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6651 transitions. [2020-10-14 10:02:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-14 10:02:58,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:02:58,123 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:02:58,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:02:58,123 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:02:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:02:58,124 INFO L82 PathProgramCache]: Analyzing trace with hash -855435954, now seen corresponding path program 1 times [2020-10-14 10:02:58,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:02:58,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059803388] [2020-10-14 10:02:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:02:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:02:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:58,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:02:58,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:02,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 10:03:03,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:03,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 395 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 10:03:03,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059803388] [2020-10-14 10:03:03,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:03,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:03,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79990384] [2020-10-14 10:03:03,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:03,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:03,279 INFO L87 Difference]: Start difference. First operand 3911 states and 6651 transitions. Second operand 5 states. [2020-10-14 10:03:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:04,297 INFO L93 Difference]: Finished difference Result 8901 states and 14952 transitions. [2020-10-14 10:03:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:04,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2020-10-14 10:03:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:04,304 INFO L225 Difference]: With dead ends: 8901 [2020-10-14 10:03:04,304 INFO L226 Difference]: Without dead ends: 5009 [2020-10-14 10:03:04,309 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 [2020-10-14 10:03:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5009 states. [2020-10-14 10:03:04,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5009 to 3911. [2020-10-14 10:03:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2020-10-14 10:03:04,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6651 transitions. [2020-10-14 10:03:04,409 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6651 transitions. Word has length 259 [2020-10-14 10:03:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:04,410 INFO L479 AbstractCegarLoop]: Abstraction has 3911 states and 6651 transitions. [2020-10-14 10:03:04,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6651 transitions. [2020-10-14 10:03:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 10:03:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:04,416 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:04,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:03:04,417 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:04,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1649389458, now seen corresponding path program 1 times [2020-10-14 10:03:04,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:04,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805733206] [2020-10-14 10:03:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:09,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 10:03:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:09,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:09,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:09,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:09,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:09,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:09,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:09,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 10:03:09,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805733206] [2020-10-14 10:03:09,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:09,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:09,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658892854] [2020-10-14 10:03:09,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:09,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:09,547 INFO L87 Difference]: Start difference. First operand 3911 states and 6651 transitions. Second operand 5 states. [2020-10-14 10:03:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:10,570 INFO L93 Difference]: Finished difference Result 8439 states and 14106 transitions. [2020-10-14 10:03:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:10,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 10:03:10,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:10,576 INFO L225 Difference]: With dead ends: 8439 [2020-10-14 10:03:10,576 INFO L226 Difference]: Without dead ends: 4547 [2020-10-14 10:03:10,582 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 [2020-10-14 10:03:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2020-10-14 10:03:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 3449. [2020-10-14 10:03:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-10-14 10:03:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5805 transitions. [2020-10-14 10:03:10,666 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5805 transitions. Word has length 260 [2020-10-14 10:03:10,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:10,666 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 5805 transitions. [2020-10-14 10:03:10,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5805 transitions. [2020-10-14 10:03:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 10:03:10,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:10,671 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:10,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:03:10,671 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:10,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1904875323, now seen corresponding path program 1 times [2020-10-14 10:03:10,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:10,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116546079] [2020-10-14 10:03:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:15,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:15,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-14 10:03:15,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:03:15,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:15,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:15,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:15,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:15,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 10:03:15,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116546079] [2020-10-14 10:03:15,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:15,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:15,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757051647] [2020-10-14 10:03:15,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:15,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:15,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:15,870 INFO L87 Difference]: Start difference. First operand 3449 states and 5805 transitions. Second operand 5 states. [2020-10-14 10:03:16,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:16,724 INFO L93 Difference]: Finished difference Result 8643 states and 14422 transitions. [2020-10-14 10:03:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:16,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 10:03:16,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:16,731 INFO L225 Difference]: With dead ends: 8643 [2020-10-14 10:03:16,731 INFO L226 Difference]: Without dead ends: 5213 [2020-10-14 10:03:16,736 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 [2020-10-14 10:03:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-10-14 10:03:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 3911. [2020-10-14 10:03:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2020-10-14 10:03:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 6651 transitions. [2020-10-14 10:03:16,847 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 6651 transitions. Word has length 260 [2020-10-14 10:03:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:16,848 INFO L479 AbstractCegarLoop]: Abstraction has 3911 states and 6651 transitions. [2020-10-14 10:03:16,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 6651 transitions. [2020-10-14 10:03:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 10:03:16,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:16,853 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:16,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:03:16,854 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash 380652323, now seen corresponding path program 1 times [2020-10-14 10:03:16,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:16,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111213110] [2020-10-14 10:03:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:17,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:21,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 10:03:21,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:21,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:22,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 10:03:22,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111213110] [2020-10-14 10:03:22,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:22,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:22,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894008761] [2020-10-14 10:03:22,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:22,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:22,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:22,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:22,046 INFO L87 Difference]: Start difference. First operand 3911 states and 6651 transitions. Second operand 5 states. [2020-10-14 10:03:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:22,909 INFO L93 Difference]: Finished difference Result 8641 states and 14387 transitions. [2020-10-14 10:03:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:22,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-14 10:03:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:22,915 INFO L225 Difference]: With dead ends: 8641 [2020-10-14 10:03:22,915 INFO L226 Difference]: Without dead ends: 4749 [2020-10-14 10:03:22,919 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 [2020-10-14 10:03:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2020-10-14 10:03:23,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 3425. [2020-10-14 10:03:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2020-10-14 10:03:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 5757 transitions. [2020-10-14 10:03:23,021 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 5757 transitions. Word has length 261 [2020-10-14 10:03:23,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:23,022 INFO L479 AbstractCegarLoop]: Abstraction has 3425 states and 5757 transitions. [2020-10-14 10:03:23,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 5757 transitions. [2020-10-14 10:03:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 10:03:23,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:23,025 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:23,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:03:23,025 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:23,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1564006067, now seen corresponding path program 1 times [2020-10-14 10:03:23,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:23,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692083579] [2020-10-14 10:03:23,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:23,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:28,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-14 10:03:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:03:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:28,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-14 10:03:28,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692083579] [2020-10-14 10:03:28,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:28,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:28,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92700974] [2020-10-14 10:03:28,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:28,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:28,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:28,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:28,189 INFO L87 Difference]: Start difference. First operand 3425 states and 5757 transitions. Second operand 5 states. [2020-10-14 10:03:29,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:29,239 INFO L93 Difference]: Finished difference Result 7929 states and 13164 transitions. [2020-10-14 10:03:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:29,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-14 10:03:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:29,245 INFO L225 Difference]: With dead ends: 7929 [2020-10-14 10:03:29,245 INFO L226 Difference]: Without dead ends: 4523 [2020-10-14 10:03:29,249 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 [2020-10-14 10:03:29,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-10-14 10:03:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 3425. [2020-10-14 10:03:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2020-10-14 10:03:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 5757 transitions. [2020-10-14 10:03:29,343 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 5757 transitions. Word has length 261 [2020-10-14 10:03:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:29,344 INFO L479 AbstractCegarLoop]: Abstraction has 3425 states and 5757 transitions. [2020-10-14 10:03:29,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 5757 transitions. [2020-10-14 10:03:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 10:03:29,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:29,348 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 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] [2020-10-14 10:03:29,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 10:03:29,348 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:29,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1700059479, now seen corresponding path program 1 times [2020-10-14 10:03:29,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:29,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130959429] [2020-10-14 10:03:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:29,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:34,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:34,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 10:03:34,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:34,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:34,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:34,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:34,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:34,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-14 10:03:34,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130959429] [2020-10-14 10:03:34,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:34,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:34,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273261135] [2020-10-14 10:03:34,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:34,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:34,530 INFO L87 Difference]: Start difference. First operand 3425 states and 5757 transitions. Second operand 5 states. [2020-10-14 10:03:35,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:35,658 INFO L93 Difference]: Finished difference Result 7941 states and 13176 transitions. [2020-10-14 10:03:35,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:35,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-14 10:03:35,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:35,663 INFO L225 Difference]: With dead ends: 7941 [2020-10-14 10:03:35,663 INFO L226 Difference]: Without dead ends: 4535 [2020-10-14 10:03:35,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:03:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2020-10-14 10:03:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 3425. [2020-10-14 10:03:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2020-10-14 10:03:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 5757 transitions. [2020-10-14 10:03:35,784 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 5757 transitions. Word has length 266 [2020-10-14 10:03:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:35,784 INFO L479 AbstractCegarLoop]: Abstraction has 3425 states and 5757 transitions. [2020-10-14 10:03:35,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 5757 transitions. [2020-10-14 10:03:35,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 10:03:35,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:35,787 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:35,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 10:03:35,788 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash -719104665, now seen corresponding path program 1 times [2020-10-14 10:03:35,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:35,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615100338] [2020-10-14 10:03:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:40,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 10:03:40,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:03:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:40,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:40,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:40,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:40,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-14 10:03:40,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615100338] [2020-10-14 10:03:40,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:40,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:40,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814410662] [2020-10-14 10:03:40,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:40,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:40,955 INFO L87 Difference]: Start difference. First operand 3425 states and 5757 transitions. Second operand 5 states. [2020-10-14 10:03:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:42,073 INFO L93 Difference]: Finished difference Result 7929 states and 13164 transitions. [2020-10-14 10:03:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:42,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-14 10:03:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:42,078 INFO L225 Difference]: With dead ends: 7929 [2020-10-14 10:03:42,079 INFO L226 Difference]: Without dead ends: 4523 [2020-10-14 10:03:42,083 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 [2020-10-14 10:03:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-10-14 10:03:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 3413. [2020-10-14 10:03:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-14 10:03:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5745 transitions. [2020-10-14 10:03:42,181 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5745 transitions. Word has length 266 [2020-10-14 10:03:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:42,181 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5745 transitions. [2020-10-14 10:03:42,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5745 transitions. [2020-10-14 10:03:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-14 10:03:42,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:42,184 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1] [2020-10-14 10:03:42,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 10:03:42,185 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:42,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:42,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1729228073, now seen corresponding path program 1 times [2020-10-14 10:03:42,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:42,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153432283] [2020-10-14 10:03:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:42,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:42,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:47,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:47,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 10:03:47,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:47,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 10:03:47,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:47,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-14 10:03:47,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:03:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:47,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:47,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 10:03:47,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153432283] [2020-10-14 10:03:47,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:47,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:47,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608338538] [2020-10-14 10:03:47,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:47,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:47,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:47,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:47,328 INFO L87 Difference]: Start difference. First operand 3413 states and 5745 transitions. Second operand 5 states. [2020-10-14 10:03:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:48,373 INFO L93 Difference]: Finished difference Result 7905 states and 13140 transitions. [2020-10-14 10:03:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:48,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-14 10:03:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:48,378 INFO L225 Difference]: With dead ends: 7905 [2020-10-14 10:03:48,378 INFO L226 Difference]: Without dead ends: 4511 [2020-10-14 10:03:48,382 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 [2020-10-14 10:03:48,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-10-14 10:03:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3413. [2020-10-14 10:03:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-14 10:03:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5745 transitions. [2020-10-14 10:03:48,481 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5745 transitions. Word has length 266 [2020-10-14 10:03:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:48,482 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5745 transitions. [2020-10-14 10:03:48,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5745 transitions. [2020-10-14 10:03:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 10:03:48,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:48,485 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1] [2020-10-14 10:03:48,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 10:03:48,485 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:48,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1589521479, now seen corresponding path program 1 times [2020-10-14 10:03:48,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:48,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176894263] [2020-10-14 10:03:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:48,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 10:03:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:03:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-14 10:03:53,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176894263] [2020-10-14 10:03:53,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:53,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:53,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271026963] [2020-10-14 10:03:53,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:53,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:53,621 INFO L87 Difference]: Start difference. First operand 3413 states and 5745 transitions. Second operand 5 states. [2020-10-14 10:03:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:03:54,688 INFO L93 Difference]: Finished difference Result 7905 states and 13140 transitions. [2020-10-14 10:03:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:03:54,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 10:03:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:03:54,694 INFO L225 Difference]: With dead ends: 7905 [2020-10-14 10:03:54,694 INFO L226 Difference]: Without dead ends: 4511 [2020-10-14 10:03:54,698 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 [2020-10-14 10:03:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-10-14 10:03:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3413. [2020-10-14 10:03:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-14 10:03:54,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5745 transitions. [2020-10-14 10:03:54,802 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5745 transitions. Word has length 269 [2020-10-14 10:03:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:03:54,803 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5745 transitions. [2020-10-14 10:03:54,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:03:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5745 transitions. [2020-10-14 10:03:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 10:03:54,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:03:54,806 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:03:54,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 10:03:54,806 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:03:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:03:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1608236034, now seen corresponding path program 1 times [2020-10-14 10:03:54,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:03:54,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656935250] [2020-10-14 10:03:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:03:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:54,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-14 10:03:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:03:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:59,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:03:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:03:59,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:03:59,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:03:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:03:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:03:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:03:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:03:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-14 10:03:59,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656935250] [2020-10-14 10:03:59,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:03:59,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:03:59,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766879572] [2020-10-14 10:03:59,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:03:59,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:03:59,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:03:59,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:03:59,968 INFO L87 Difference]: Start difference. First operand 3413 states and 5745 transitions. Second operand 5 states. [2020-10-14 10:04:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:04:01,046 INFO L93 Difference]: Finished difference Result 7905 states and 13140 transitions. [2020-10-14 10:04:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:04:01,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-14 10:04:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:04:01,051 INFO L225 Difference]: With dead ends: 7905 [2020-10-14 10:04:01,051 INFO L226 Difference]: Without dead ends: 4511 [2020-10-14 10:04:01,054 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 [2020-10-14 10:04:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-10-14 10:04:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 3413. [2020-10-14 10:04:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3413 states. [2020-10-14 10:04:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5745 transitions. [2020-10-14 10:04:01,160 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5745 transitions. Word has length 272 [2020-10-14 10:04:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:04:01,160 INFO L479 AbstractCegarLoop]: Abstraction has 3413 states and 5745 transitions. [2020-10-14 10:04:01,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:04:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5745 transitions. [2020-10-14 10:04:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 10:04:01,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:04:01,163 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:04:01,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 10:04:01,164 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:04:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:04:01,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1757459868, now seen corresponding path program 1 times [2020-10-14 10:04:01,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:04:01,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304794301] [2020-10-14 10:04:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:04:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:04:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:04:03,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...