/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.16.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 10:06:26,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 10:06:26,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 10:06:26,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 10:06:26,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 10:06:26,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 10:06:26,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 10:06:26,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 10:06:26,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 10:06:26,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 10:06:26,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 10:06:26,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 10:06:26,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 10:06:26,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 10:06:26,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 10:06:26,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 10:06:26,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 10:06:26,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 10:06:26,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 10:06:26,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 10:06:26,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 10:06:26,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 10:06:26,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 10:06:26,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 10:06:26,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 10:06:26,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 10:06:26,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 10:06:26,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 10:06:26,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 10:06:26,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 10:06:26,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 10:06:26,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 10:06:26,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 10:06:26,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 10:06:26,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 10:06:26,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 10:06:26,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 10:06:26,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 10:06:26,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 10:06:26,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 10:06:26,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 10:06:26,533 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 10:06:26,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 10:06:26,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 10:06:26,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 10:06:26,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 10:06:26,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 10:06:26,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 10:06:26,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 10:06:26,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 10:06:26,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 10:06:26,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 10:06:26,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 10:06:26,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 10:06:26,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 10:06:26,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 10:06:26,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 10:06:26,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 10:06:26,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 10:06:26,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 10:06:26,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 10:06:26,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 10:06:26,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 10:06:26,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 10:06:26,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 10:06:26,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 10:06:26,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 10:06:26,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 10:06:26,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 10:06:26,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 10:06:26,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 10:06:26,563 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 10:06:26,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 10:06:26,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 10:06:26,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 10:06:26,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 10:06:26,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 10:06:26,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-14 10:06:26,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41e23cc8/747449a4b79e41898545cc9c68153b74/FLAGffe4737f1 [2020-10-14 10:06:27,550 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 10:06:27,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ssh/s3_srvr.blast.16.i.cil-2.c [2020-10-14 10:06:27,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41e23cc8/747449a4b79e41898545cc9c68153b74/FLAGffe4737f1 [2020-10-14 10:06:27,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d41e23cc8/747449a4b79e41898545cc9c68153b74 [2020-10-14 10:06:27,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 10:06:27,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 10:06:27,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 10:06:27,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 10:06:27,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 10:06:27,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:27" (1/1) ... [2020-10-14 10:06:27,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26caa65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:27, skipping insertion in model container [2020-10-14 10:06:27,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:06:27" (1/1) ... [2020-10-14 10:06:27,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 10:06:27,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 10:06:28,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:06:28,519 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 10:06:28,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 10:06:28,722 INFO L208 MainTranslator]: Completed translation [2020-10-14 10:06:28,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28 WrapperNode [2020-10-14 10:06:28,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 10:06:28,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 10:06:28,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 10:06:28,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 10:06:28,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (1/1) ... [2020-10-14 10:06:28,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 10:06:28,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 10:06:28,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 10:06:28,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 10:06:28,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (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 10:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 10:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 10:06:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_get_server_method [2020-10-14 10:06:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure SSLv3_server_method [2020-10-14 10:06:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 10:06:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ssl3_accept [2020-10-14 10:06:29,021 INFO L138 BoogieDeclarations]: Found implementation of procedure sslv3_base_method [2020-10-14 10:06:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-14 10:06:29,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-10-14 10:06:29,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 10:06:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 10:06:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 10:06:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 10:06:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-14 10:06:29,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-10-14 10:06:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-10-14 10:06:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure SSLv3_server_method [2020-10-14 10:06:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure sslv3_base_method [2020-10-14 10:06:29,025 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_accept [2020-10-14 10:06:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure ssl3_get_server_method [2020-10-14 10:06:29,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-10-14 10:06:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 10:06:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 10:06:29,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 10:06:29,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 10:06:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 10:06:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 10:06:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 10:06:29,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-14 10:06:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 10:06:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 10:06:29,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 10:06:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-14 10:06:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-10-14 10:06:29,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-10-14 10:06:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-10-14 10:06:29,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 10:06:29,764 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-14 10:06:30,427 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-14 10:06:30,428 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-14 10:06:30,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 10:06:30,450 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 10:06:30,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:30 BoogieIcfgContainer [2020-10-14 10:06:30,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 10:06:30,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 10:06:30,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 10:06:30,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 10:06:30,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:06:27" (1/3) ... [2020-10-14 10:06:30,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9de7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:30, skipping insertion in model container [2020-10-14 10:06:30,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:06:28" (2/3) ... [2020-10-14 10:06:30,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9de7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:06:30, skipping insertion in model container [2020-10-14 10:06:30,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:06:30" (3/3) ... [2020-10-14 10:06:30,464 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2020-10-14 10:06:30,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 10:06:30,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 10:06:30,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 10:06:30,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 10:06:30,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 10:06:30,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 10:06:30,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 10:06:30,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 10:06:30,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 10:06:30,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 10:06:30,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 10:06:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-14 10:06:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 10:06:30,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:30,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:30,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:30,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1150770581, now seen corresponding path program 1 times [2020-10-14 10:06:30,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:30,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197856148] [2020-10-14 10:06:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:32,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 10:06:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-14 10:06:32,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:32,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:06:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:06:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 10:06:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:32,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:32,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 10:06:32,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:32,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:32,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:32,472 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 10:06:32,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197856148] [2020-10-14 10:06:32,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:32,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:32,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68484757] [2020-10-14 10:06:32,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:32,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:32,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:32,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:32,502 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-10-14 10:06:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:33,309 INFO L93 Difference]: Finished difference Result 463 states and 792 transitions. [2020-10-14 10:06:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:33,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 10:06:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:33,327 INFO L225 Difference]: With dead ends: 463 [2020-10-14 10:06:33,327 INFO L226 Difference]: Without dead ends: 284 [2020-10-14 10:06:33,332 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 10:06:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-14 10:06:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2020-10-14 10:06:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-14 10:06:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 426 transitions. [2020-10-14 10:06:33,398 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 426 transitions. Word has length 50 [2020-10-14 10:06:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 426 transitions. [2020-10-14 10:06:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 426 transitions. [2020-10-14 10:06:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 10:06:33,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:33,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:33,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 10:06:33,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:33,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1009168811, now seen corresponding path program 1 times [2020-10-14 10:06:33,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:33,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433593657] [2020-10-14 10:06:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:33,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:34,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:34,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 10:06:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:06:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-14 10:06:34,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:34,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 10:06:34,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:06:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:34,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:06:34,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:34,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:34,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:34,508 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 10:06:34,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433593657] [2020-10-14 10:06:34,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:34,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:34,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616050501] [2020-10-14 10:06:34,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:34,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:34,526 INFO L87 Difference]: Start difference. First operand 284 states and 426 transitions. Second operand 4 states. [2020-10-14 10:06:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:35,200 INFO L93 Difference]: Finished difference Result 554 states and 853 transitions. [2020-10-14 10:06:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:35,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 10:06:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:35,205 INFO L225 Difference]: With dead ends: 554 [2020-10-14 10:06:35,205 INFO L226 Difference]: Without dead ends: 418 [2020-10-14 10:06:35,208 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 10:06:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-14 10:06:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2020-10-14 10:06:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-14 10:06:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 622 transitions. [2020-10-14 10:06:35,258 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 622 transitions. Word has length 67 [2020-10-14 10:06:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:35,259 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 622 transitions. [2020-10-14 10:06:35,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 622 transitions. [2020-10-14 10:06:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 10:06:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:35,270 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:35,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 10:06:35,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:35,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2112636429, now seen corresponding path program 1 times [2020-10-14 10:06:35,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:35,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959560388] [2020-10-14 10:06:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 10:06:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 10:06:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-14 10:06:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 10:06:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:06:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:35,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:35,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:35,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:35,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:35,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:35,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:35,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:35,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:35,942 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 10:06:35,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959560388] [2020-10-14 10:06:35,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:35,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:35,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069268526] [2020-10-14 10:06:35,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:35,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:35,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:35,945 INFO L87 Difference]: Start difference. First operand 418 states and 622 transitions. Second operand 4 states. [2020-10-14 10:06:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:36,563 INFO L93 Difference]: Finished difference Result 822 states and 1245 transitions. [2020-10-14 10:06:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:36,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-14 10:06:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:36,567 INFO L225 Difference]: With dead ends: 822 [2020-10-14 10:06:36,567 INFO L226 Difference]: Without dead ends: 552 [2020-10-14 10:06:36,569 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 10:06:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2020-10-14 10:06:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2020-10-14 10:06:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-14 10:06:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 819 transitions. [2020-10-14 10:06:36,590 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 819 transitions. Word has length 89 [2020-10-14 10:06:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:36,591 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 819 transitions. [2020-10-14 10:06:36,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 819 transitions. [2020-10-14 10:06:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 10:06:36,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:36,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:36,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 10:06:36,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash -381540787, now seen corresponding path program 1 times [2020-10-14 10:06:36,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162010212] [2020-10-14 10:06:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:36,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 10:06:40,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:40,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3640 [2020-10-14 10:06:40,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 10:06:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:06:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:40,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:40,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:40,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:40,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:06:40,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:40,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:40,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:40,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:40,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-14 10:06:40,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162010212] [2020-10-14 10:06:40,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:40,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:40,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680701490] [2020-10-14 10:06:40,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:40,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:40,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:40,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:40,419 INFO L87 Difference]: Start difference. First operand 552 states and 819 transitions. Second operand 4 states. [2020-10-14 10:06:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:40,914 INFO L93 Difference]: Finished difference Result 1090 states and 1639 transitions. [2020-10-14 10:06:40,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:40,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-14 10:06:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:40,920 INFO L225 Difference]: With dead ends: 1090 [2020-10-14 10:06:40,920 INFO L226 Difference]: Without dead ends: 686 [2020-10-14 10:06:40,922 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 10:06:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-10-14 10:06:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2020-10-14 10:06:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-14 10:06:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1017 transitions. [2020-10-14 10:06:40,949 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1017 transitions. Word has length 113 [2020-10-14 10:06:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:40,951 INFO L479 AbstractCegarLoop]: Abstraction has 686 states and 1017 transitions. [2020-10-14 10:06:40,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1017 transitions. [2020-10-14 10:06:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 10:06:40,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:40,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:40,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 10:06:40,960 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:40,961 INFO L82 PathProgramCache]: Analyzing trace with hash 772738769, now seen corresponding path program 1 times [2020-10-14 10:06:40,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:40,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362435304] [2020-10-14 10:06:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:41,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 10:06:45,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3995 [2020-10-14 10:06:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:45,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 10:06:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:06:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 10:06:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:45,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:45,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 10:06:45,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:45,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:45,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:45,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 10:06:45,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362435304] [2020-10-14 10:06:45,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:45,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735212068] [2020-10-14 10:06:45,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:45,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:45,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:45,121 INFO L87 Difference]: Start difference. First operand 686 states and 1017 transitions. Second operand 4 states. [2020-10-14 10:06:45,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:45,694 INFO L93 Difference]: Finished difference Result 1358 states and 2035 transitions. [2020-10-14 10:06:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:45,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-14 10:06:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:45,702 INFO L225 Difference]: With dead ends: 1358 [2020-10-14 10:06:45,702 INFO L226 Difference]: Without dead ends: 820 [2020-10-14 10:06:45,705 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 10:06:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-10-14 10:06:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2020-10-14 10:06:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-10-14 10:06:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1216 transitions. [2020-10-14 10:06:45,732 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1216 transitions. Word has length 142 [2020-10-14 10:06:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:45,735 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 1216 transitions. [2020-10-14 10:06:45,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1216 transitions. [2020-10-14 10:06:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 10:06:45,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:45,739 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:45,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 10:06:45,740 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash 787935694, now seen corresponding path program 1 times [2020-10-14 10:06:45,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:45,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-10-14 10:06:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 10:06:50,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:06:50,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-14 10:06:50,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:06:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 10:06:50,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:06:50,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:50,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:50,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:50,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:50,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:06:50,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:50,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:50,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:50,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 10:06:51,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-10-14 10:06:51,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:51,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:06:51,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570691642] [2020-10-14 10:06:51,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:06:51,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:06:51,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:06:51,015 INFO L87 Difference]: Start difference. First operand 820 states and 1216 transitions. Second operand 4 states. [2020-10-14 10:06:51,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:51,573 INFO L93 Difference]: Finished difference Result 1626 states and 2433 transitions. [2020-10-14 10:06:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:06:51,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-14 10:06:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:51,580 INFO L225 Difference]: With dead ends: 1626 [2020-10-14 10:06:51,580 INFO L226 Difference]: Without dead ends: 954 [2020-10-14 10:06:51,582 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 10:06:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-10-14 10:06:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 954. [2020-10-14 10:06:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-10-14 10:06:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1416 transitions. [2020-10-14 10:06:51,611 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1416 transitions. Word has length 173 [2020-10-14 10:06:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:51,611 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1416 transitions. [2020-10-14 10:06:51,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:06:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1416 transitions. [2020-10-14 10:06:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 10:06:51,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:51,616 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:51,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 10:06:51,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:51,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1403623711, now seen corresponding path program 1 times [2020-10-14 10:06:51,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:51,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013087943] [2020-10-14 10:06:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:51,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:56,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:56,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 10:06:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:06:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 10:06:56,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:56,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:06:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 10:06:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 10:06:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:06:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:56,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:06:56,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:06:56,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:06:56,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:06:56,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:06:56,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:06:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:06:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:06:56,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:06:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:06:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-14 10:06:56,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013087943] [2020-10-14 10:06:56,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:06:56,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:06:56,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959912209] [2020-10-14 10:06:56,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:06:56,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:06:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:06:56,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:06:56,930 INFO L87 Difference]: Start difference. First operand 954 states and 1416 transitions. Second operand 5 states. [2020-10-14 10:06:58,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:06:58,361 INFO L93 Difference]: Finished difference Result 2680 states and 3994 transitions. [2020-10-14 10:06:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:06:58,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 10:06:58,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:06:58,378 INFO L225 Difference]: With dead ends: 2680 [2020-10-14 10:06:58,378 INFO L226 Difference]: Without dead ends: 1740 [2020-10-14 10:06:58,381 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 10:06:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2020-10-14 10:06:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1136. [2020-10-14 10:06:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1136 states. [2020-10-14 10:06:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1724 transitions. [2020-10-14 10:06:58,435 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1724 transitions. Word has length 205 [2020-10-14 10:06:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:06:58,436 INFO L479 AbstractCegarLoop]: Abstraction has 1136 states and 1724 transitions. [2020-10-14 10:06:58,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:06:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1724 transitions. [2020-10-14 10:06:58,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 10:06:58,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:06:58,442 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:06:58,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 10:06:58,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:06:58,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:06:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash -791605155, now seen corresponding path program 1 times [2020-10-14 10:06:58,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:06:58,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846016961] [2020-10-14 10:06:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:06:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:06:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:06:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 10:07:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:07:03,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 10:07:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:07:03,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:03,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:03,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:03,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:03,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 10:07:03,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:03,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:03,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-14 10:07:03,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846016961] [2020-10-14 10:07:03,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:03,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305615625] [2020-10-14 10:07:03,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:03,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:03,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:03,706 INFO L87 Difference]: Start difference. First operand 1136 states and 1724 transitions. Second operand 4 states. [2020-10-14 10:07:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:04,420 INFO L93 Difference]: Finished difference Result 2258 states and 3449 transitions. [2020-10-14 10:07:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:04,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-10-14 10:07:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:04,431 INFO L225 Difference]: With dead ends: 2258 [2020-10-14 10:07:04,432 INFO L226 Difference]: Without dead ends: 1296 [2020-10-14 10:07:04,435 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 10:07:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2020-10-14 10:07:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1296. [2020-10-14 10:07:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1296 states. [2020-10-14 10:07:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1969 transitions. [2020-10-14 10:07:04,528 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1969 transitions. Word has length 205 [2020-10-14 10:07:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:04,529 INFO L479 AbstractCegarLoop]: Abstraction has 1296 states and 1969 transitions. [2020-10-14 10:07:04,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1969 transitions. [2020-10-14 10:07:04,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 10:07:04,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:04,539 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:04,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 10:07:04,539 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:04,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1314220935, now seen corresponding path program 1 times [2020-10-14 10:07:04,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:04,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568761394] [2020-10-14 10:07:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 10:07:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 10:07:09,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:09,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 10:07:09,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:07:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:09,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:09,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:09,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:09,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:09,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:09,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-14 10:07:09,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568761394] [2020-10-14 10:07:09,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:09,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:09,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451985136] [2020-10-14 10:07:09,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:09,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:09,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:09,785 INFO L87 Difference]: Start difference. First operand 1296 states and 1969 transitions. Second operand 4 states. [2020-10-14 10:07:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:10,337 INFO L93 Difference]: Finished difference Result 2578 states and 3939 transitions. [2020-10-14 10:07:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:10,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-10-14 10:07:10,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:10,347 INFO L225 Difference]: With dead ends: 2578 [2020-10-14 10:07:10,348 INFO L226 Difference]: Without dead ends: 1456 [2020-10-14 10:07:10,350 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 10:07:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-10-14 10:07:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1456. [2020-10-14 10:07:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-10-14 10:07:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2215 transitions. [2020-10-14 10:07:10,415 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2215 transitions. Word has length 207 [2020-10-14 10:07:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:10,416 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 2215 transitions. [2020-10-14 10:07:10,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:10,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2215 transitions. [2020-10-14 10:07:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 10:07:10,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:10,425 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, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:10,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 10:07:10,425 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash 947099171, now seen corresponding path program 1 times [2020-10-14 10:07:10,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:10,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720634201] [2020-10-14 10:07:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:15,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 10:07:15,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:15,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 10:07:15,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:15,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-14 10:07:15,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:07:15,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:15,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:15,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:15,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 10:07:15,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:15,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:15,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-14 10:07:15,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720634201] [2020-10-14 10:07:15,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:15,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:15,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424607036] [2020-10-14 10:07:15,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:15,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:15,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:15,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:15,637 INFO L87 Difference]: Start difference. First operand 1456 states and 2215 transitions. Second operand 4 states. [2020-10-14 10:07:16,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:16,274 INFO L93 Difference]: Finished difference Result 2898 states and 4431 transitions. [2020-10-14 10:07:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:16,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 10:07:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:16,284 INFO L225 Difference]: With dead ends: 2898 [2020-10-14 10:07:16,284 INFO L226 Difference]: Without dead ends: 1616 [2020-10-14 10:07:16,287 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 10:07:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-10-14 10:07:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2020-10-14 10:07:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2020-10-14 10:07:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2462 transitions. [2020-10-14 10:07:16,344 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2462 transitions. Word has length 240 [2020-10-14 10:07:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:16,345 INFO L479 AbstractCegarLoop]: Abstraction has 1616 states and 2462 transitions. [2020-10-14 10:07:16,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2462 transitions. [2020-10-14 10:07:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 10:07:16,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:16,353 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:16,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 10:07:16,353 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:16,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1320023439, now seen corresponding path program 1 times [2020-10-14 10:07:16,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:16,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600521417] [2020-10-14 10:07:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:21,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 10:07:21,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 10:07:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:21,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-14 10:07:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:07:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:21,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:21,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2020-10-14 10:07:21,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600521417] [2020-10-14 10:07:21,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:21,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:21,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711483027] [2020-10-14 10:07:21,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:21,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:21,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:21,594 INFO L87 Difference]: Start difference. First operand 1616 states and 2462 transitions. Second operand 4 states. [2020-10-14 10:07:22,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:22,484 INFO L93 Difference]: Finished difference Result 3211 states and 4914 transitions. [2020-10-14 10:07:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:22,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2020-10-14 10:07:22,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:22,495 INFO L225 Difference]: With dead ends: 3211 [2020-10-14 10:07:22,495 INFO L226 Difference]: Without dead ends: 1769 [2020-10-14 10:07:22,499 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 10:07:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2020-10-14 10:07:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1769. [2020-10-14 10:07:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1769 states. [2020-10-14 10:07:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2692 transitions. [2020-10-14 10:07:22,573 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2692 transitions. Word has length 275 [2020-10-14 10:07:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:22,573 INFO L479 AbstractCegarLoop]: Abstraction has 1769 states and 2692 transitions. [2020-10-14 10:07:22,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2692 transitions. [2020-10-14 10:07:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 10:07:22,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:22,582 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:22,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 10:07:22,583 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:22,583 INFO L82 PathProgramCache]: Analyzing trace with hash 402982878, now seen corresponding path program 1 times [2020-10-14 10:07:22,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:22,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248594561] [2020-10-14 10:07:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:23,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-10-14 10:07:27,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:07:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:27,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2020-10-14 10:07:27,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248594561] [2020-10-14 10:07:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:27,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315442952] [2020-10-14 10:07:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:27,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:27,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:27,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:27,866 INFO L87 Difference]: Start difference. First operand 1769 states and 2692 transitions. Second operand 5 states. [2020-10-14 10:07:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:29,137 INFO L93 Difference]: Finished difference Result 4731 states and 7192 transitions. [2020-10-14 10:07:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:29,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-14 10:07:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:29,152 INFO L225 Difference]: With dead ends: 4731 [2020-10-14 10:07:29,153 INFO L226 Difference]: Without dead ends: 2976 [2020-10-14 10:07:29,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:07:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2020-10-14 10:07:29,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2198. [2020-10-14 10:07:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2020-10-14 10:07:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3484 transitions. [2020-10-14 10:07:29,242 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3484 transitions. Word has length 314 [2020-10-14 10:07:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:29,243 INFO L479 AbstractCegarLoop]: Abstraction has 2198 states and 3484 transitions. [2020-10-14 10:07:29,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:29,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3484 transitions. [2020-10-14 10:07:29,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 10:07:29,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:29,253 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:29,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 10:07:29,254 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash 651129372, now seen corresponding path program 1 times [2020-10-14 10:07:29,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:29,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763551213] [2020-10-14 10:07:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-14 10:07:34,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 10:07:34,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 10:07:34,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:07:34,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-10-14 10:07:34,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:07:34,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:07:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:34,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:34,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:34,497 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2020-10-14 10:07:34,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763551213] [2020-10-14 10:07:34,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:34,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:07:34,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425638846] [2020-10-14 10:07:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:07:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:34,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:07:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:07:34,500 INFO L87 Difference]: Start difference. First operand 2198 states and 3484 transitions. Second operand 5 states. [2020-10-14 10:07:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:35,759 INFO L93 Difference]: Finished difference Result 5325 states and 8303 transitions. [2020-10-14 10:07:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:07:35,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-14 10:07:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:35,777 INFO L225 Difference]: With dead ends: 5325 [2020-10-14 10:07:35,777 INFO L226 Difference]: Without dead ends: 3141 [2020-10-14 10:07:35,782 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 10:07:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2020-10-14 10:07:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2198. [2020-10-14 10:07:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2020-10-14 10:07:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3484 transitions. [2020-10-14 10:07:35,859 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3484 transitions. Word has length 314 [2020-10-14 10:07:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:35,860 INFO L479 AbstractCegarLoop]: Abstraction has 2198 states and 3484 transitions. [2020-10-14 10:07:35,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:07:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3484 transitions. [2020-10-14 10:07:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 10:07:35,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:35,869 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 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 10:07:35,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 10:07:35,870 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:35,870 INFO L82 PathProgramCache]: Analyzing trace with hash 636925206, now seen corresponding path program 1 times [2020-10-14 10:07:35,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:35,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577747374] [2020-10-14 10:07:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:40,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:40,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-14 10:07:40,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:07:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:07:40,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:41,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:41,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:41,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2020-10-14 10:07:41,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577747374] [2020-10-14 10:07:41,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:41,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:41,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177768332] [2020-10-14 10:07:41,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:41,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:41,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:41,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:41,099 INFO L87 Difference]: Start difference. First operand 2198 states and 3484 transitions. Second operand 4 states. [2020-10-14 10:07:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:41,655 INFO L93 Difference]: Finished difference Result 4382 states and 6969 transitions. [2020-10-14 10:07:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:41,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2020-10-14 10:07:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:41,669 INFO L225 Difference]: With dead ends: 4382 [2020-10-14 10:07:41,669 INFO L226 Difference]: Without dead ends: 2397 [2020-10-14 10:07:41,674 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 10:07:41,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-10-14 10:07:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2397. [2020-10-14 10:07:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2020-10-14 10:07:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3805 transitions. [2020-10-14 10:07:41,742 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3805 transitions. Word has length 315 [2020-10-14 10:07:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:41,743 INFO L479 AbstractCegarLoop]: Abstraction has 2397 states and 3805 transitions. [2020-10-14 10:07:41,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3805 transitions. [2020-10-14 10:07:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-14 10:07:41,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:41,757 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:07:41,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 10:07:41,757 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:41,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:41,758 INFO L82 PathProgramCache]: Analyzing trace with hash 644326394, now seen corresponding path program 1 times [2020-10-14 10:07:41,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:41,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254932841] [2020-10-14 10:07:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:41,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:41,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:46,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:46,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 10:07:46,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:07:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 10:07:46,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:46,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-14 10:07:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:07:46,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:46,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:46,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:46,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:46,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:46,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2020-10-14 10:07:46,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254932841] [2020-10-14 10:07:46,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:47,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:47,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296933905] [2020-10-14 10:07:47,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:47,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:47,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:47,001 INFO L87 Difference]: Start difference. First operand 2397 states and 3805 transitions. Second operand 4 states. [2020-10-14 10:07:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:47,573 INFO L93 Difference]: Finished difference Result 4780 states and 7611 transitions. [2020-10-14 10:07:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:47,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 355 [2020-10-14 10:07:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:47,587 INFO L225 Difference]: With dead ends: 4780 [2020-10-14 10:07:47,588 INFO L226 Difference]: Without dead ends: 2596 [2020-10-14 10:07:47,595 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 10:07:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2020-10-14 10:07:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2596. [2020-10-14 10:07:47,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2596 states. [2020-10-14 10:07:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 4127 transitions. [2020-10-14 10:07:47,668 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 4127 transitions. Word has length 355 [2020-10-14 10:07:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:47,669 INFO L479 AbstractCegarLoop]: Abstraction has 2596 states and 4127 transitions. [2020-10-14 10:07:47,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 4127 transitions. [2020-10-14 10:07:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-14 10:07:47,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:47,677 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:47,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 10:07:47,677 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:47,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:47,678 INFO L82 PathProgramCache]: Analyzing trace with hash 695315496, now seen corresponding path program 1 times [2020-10-14 10:07:47,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:47,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304952225] [2020-10-14 10:07:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:52,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:52,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-10-14 10:07:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:07:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5237 [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 10:07:52,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:53,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2020-10-14 10:07:53,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304952225] [2020-10-14 10:07:53,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:53,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:53,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389250752] [2020-10-14 10:07:53,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:53,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:53,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:53,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:53,194 INFO L87 Difference]: Start difference. First operand 2596 states and 4127 transitions. Second operand 4 states. [2020-10-14 10:07:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:07:54,059 INFO L93 Difference]: Finished difference Result 5172 states and 8246 transitions. [2020-10-14 10:07:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:07:54,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 398 [2020-10-14 10:07:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:07:54,076 INFO L225 Difference]: With dead ends: 5172 [2020-10-14 10:07:54,076 INFO L226 Difference]: Without dead ends: 2789 [2020-10-14 10:07:54,082 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 10:07:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-14 10:07:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2789. [2020-10-14 10:07:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2789 states. [2020-10-14 10:07:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4430 transitions. [2020-10-14 10:07:54,154 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4430 transitions. Word has length 398 [2020-10-14 10:07:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:07:54,155 INFO L479 AbstractCegarLoop]: Abstraction has 2789 states and 4430 transitions. [2020-10-14 10:07:54,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:07:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4430 transitions. [2020-10-14 10:07:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-14 10:07:54,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:07:54,172 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:54,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 10:07:54,173 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:07:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:07:54,173 INFO L82 PathProgramCache]: Analyzing trace with hash 598786871, now seen corresponding path program 1 times [2020-10-14 10:07:54,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:07:54,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999564543] [2020-10-14 10:07:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:07:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:59,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 10:07:59,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:07:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 402 [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:07:59,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:59,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:07:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:07:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:07:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:07:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:07:59,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:07:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:07:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:07:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:07:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:07:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:07:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:07:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:07:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-14 10:07:59,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999564543] [2020-10-14 10:07:59,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:07:59,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:07:59,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031064107] [2020-10-14 10:07:59,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:07:59,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:07:59,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:07:59,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:07:59,605 INFO L87 Difference]: Start difference. First operand 2789 states and 4430 transitions. Second operand 4 states. [2020-10-14 10:08:00,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:00,120 INFO L93 Difference]: Finished difference Result 5564 states and 8861 transitions. [2020-10-14 10:08:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:00,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 439 [2020-10-14 10:08:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:00,127 INFO L225 Difference]: With dead ends: 5564 [2020-10-14 10:08:00,128 INFO L226 Difference]: Without dead ends: 2988 [2020-10-14 10:08:00,132 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 10:08:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-10-14 10:08:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2988. [2020-10-14 10:08:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2988 states. [2020-10-14 10:08:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 4754 transitions. [2020-10-14 10:08:00,200 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 4754 transitions. Word has length 439 [2020-10-14 10:08:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:00,201 INFO L479 AbstractCegarLoop]: Abstraction has 2988 states and 4754 transitions. [2020-10-14 10:08:00,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 4754 transitions. [2020-10-14 10:08:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-14 10:08:00,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:00,210 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:00,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 10:08:00,210 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash 703853385, now seen corresponding path program 1 times [2020-10-14 10:08:00,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:00,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299347774] [2020-10-14 10:08:00,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:05,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-14 10:08:05,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-14 10:08:05,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:05,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-14 10:08:05,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:08:05,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 10:08:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:05,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:05,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2020-10-14 10:08:05,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299347774] [2020-10-14 10:08:05,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:05,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:08:05,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52693261] [2020-10-14 10:08:05,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:05,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:05,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:05,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:05,830 INFO L87 Difference]: Start difference. First operand 2988 states and 4754 transitions. Second operand 4 states. [2020-10-14 10:08:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:06,380 INFO L93 Difference]: Finished difference Result 5962 states and 9509 transitions. [2020-10-14 10:08:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:06,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 480 [2020-10-14 10:08:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:06,392 INFO L225 Difference]: With dead ends: 5962 [2020-10-14 10:08:06,394 INFO L226 Difference]: Without dead ends: 3187 [2020-10-14 10:08:06,401 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 10:08:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2020-10-14 10:08:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3187. [2020-10-14 10:08:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3187 states. [2020-10-14 10:08:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 5079 transitions. [2020-10-14 10:08:06,495 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 5079 transitions. Word has length 480 [2020-10-14 10:08:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:06,496 INFO L479 AbstractCegarLoop]: Abstraction has 3187 states and 5079 transitions. [2020-10-14 10:08:06,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 5079 transitions. [2020-10-14 10:08:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-14 10:08:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:06,512 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:06,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 10:08:06,512 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1157572067, now seen corresponding path program 1 times [2020-10-14 10:08:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:06,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680641766] [2020-10-14 10:08:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 10:08:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 404 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:08:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:11,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1047 proven. 0 refuted. 0 times theorem prover too weak. 1481 trivial. 0 not checked. [2020-10-14 10:08:12,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680641766] [2020-10-14 10:08:12,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:12,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:12,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001995171] [2020-10-14 10:08:12,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:12,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:12,012 INFO L87 Difference]: Start difference. First operand 3187 states and 5079 transitions. Second operand 5 states. [2020-10-14 10:08:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:13,055 INFO L93 Difference]: Finished difference Result 7729 states and 12105 transitions. [2020-10-14 10:08:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:13,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 524 [2020-10-14 10:08:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:13,068 INFO L225 Difference]: With dead ends: 7729 [2020-10-14 10:08:13,068 INFO L226 Difference]: Without dead ends: 4556 [2020-10-14 10:08:13,075 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 10:08:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-10-14 10:08:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 3459. [2020-10-14 10:08:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3459 states. [2020-10-14 10:08:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 5591 transitions. [2020-10-14 10:08:13,163 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 5591 transitions. Word has length 524 [2020-10-14 10:08:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:13,164 INFO L479 AbstractCegarLoop]: Abstraction has 3459 states and 5591 transitions. [2020-10-14 10:08:13,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 5591 transitions. [2020-10-14 10:08:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-14 10:08:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:13,179 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:13,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 10:08:13,180 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash 300745823, now seen corresponding path program 1 times [2020-10-14 10:08:13,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:13,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655045588] [2020-10-14 10:08:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:13,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 10:08:18,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 488 [2020-10-14 10:08:18,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:08:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:18,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:18,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2135 trivial. 0 not checked. [2020-10-14 10:08:18,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655045588] [2020-10-14 10:08:18,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:18,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:08:18,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652841299] [2020-10-14 10:08:18,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:18,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:18,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:18,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:18,631 INFO L87 Difference]: Start difference. First operand 3459 states and 5591 transitions. Second operand 4 states. [2020-10-14 10:08:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:19,453 INFO L93 Difference]: Finished difference Result 6899 states and 11176 transitions. [2020-10-14 10:08:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:19,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 524 [2020-10-14 10:08:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:19,463 INFO L225 Difference]: With dead ends: 6899 [2020-10-14 10:08:19,463 INFO L226 Difference]: Without dead ends: 3670 [2020-10-14 10:08:19,470 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 10:08:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2020-10-14 10:08:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3670. [2020-10-14 10:08:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3670 states. [2020-10-14 10:08:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 5927 transitions. [2020-10-14 10:08:19,544 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 5927 transitions. Word has length 524 [2020-10-14 10:08:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:19,545 INFO L479 AbstractCegarLoop]: Abstraction has 3670 states and 5927 transitions. [2020-10-14 10:08:19,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 5927 transitions. [2020-10-14 10:08:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-14 10:08:19,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:19,556 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:19,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 10:08:19,556 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:19,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:19,557 INFO L82 PathProgramCache]: Analyzing trace with hash -2074435669, now seen corresponding path program 1 times [2020-10-14 10:08:19,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:19,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823126306] [2020-10-14 10:08:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:24,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 574 [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6114 [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 529 [2020-10-14 10:08:25,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 10:08:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:25,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:25,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:25,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 438 proven. 0 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2020-10-14 10:08:26,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823126306] [2020-10-14 10:08:26,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:26,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:08:26,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771109457] [2020-10-14 10:08:26,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:26,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:26,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:26,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:26,139 INFO L87 Difference]: Start difference. First operand 3670 states and 5927 transitions. Second operand 4 states. [2020-10-14 10:08:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:26,655 INFO L93 Difference]: Finished difference Result 7326 states and 11855 transitions. [2020-10-14 10:08:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:26,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 566 [2020-10-14 10:08:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:26,664 INFO L225 Difference]: With dead ends: 7326 [2020-10-14 10:08:26,664 INFO L226 Difference]: Without dead ends: 3886 [2020-10-14 10:08:26,670 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 10:08:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2020-10-14 10:08:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3886. [2020-10-14 10:08:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3886 states. [2020-10-14 10:08:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 6286 transitions. [2020-10-14 10:08:26,747 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 6286 transitions. Word has length 566 [2020-10-14 10:08:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:26,748 INFO L479 AbstractCegarLoop]: Abstraction has 3886 states and 6286 transitions. [2020-10-14 10:08:26,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 6286 transitions. [2020-10-14 10:08:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-10-14 10:08:26,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:26,761 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:26,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 10:08:26,762 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1674908438, now seen corresponding path program 1 times [2020-10-14 10:08:26,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:26,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103248184] [2020-10-14 10:08:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:31,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:32,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 616 [2020-10-14 10:08:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5688 [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-14 10:08:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 10:08:32,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:32,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:32,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3434 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 2968 trivial. 0 not checked. [2020-10-14 10:08:32,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103248184] [2020-10-14 10:08:32,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:32,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 10:08:32,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175917683] [2020-10-14 10:08:32,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 10:08:32,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 10:08:32,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 10:08:32,881 INFO L87 Difference]: Start difference. First operand 3886 states and 6286 transitions. Second operand 4 states. [2020-10-14 10:08:33,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:33,416 INFO L93 Difference]: Finished difference Result 4104 states and 6648 transitions. [2020-10-14 10:08:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 10:08:33,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 608 [2020-10-14 10:08:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:33,426 INFO L225 Difference]: With dead ends: 4104 [2020-10-14 10:08:33,426 INFO L226 Difference]: Without dead ends: 4102 [2020-10-14 10:08:33,428 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 10:08:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2020-10-14 10:08:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4102. [2020-10-14 10:08:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4102 states. [2020-10-14 10:08:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 6646 transitions. [2020-10-14 10:08:33,520 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 6646 transitions. Word has length 608 [2020-10-14 10:08:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:33,521 INFO L479 AbstractCegarLoop]: Abstraction has 4102 states and 6646 transitions. [2020-10-14 10:08:33,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 10:08:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 6646 transitions. [2020-10-14 10:08:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2020-10-14 10:08:33,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:33,535 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 10:08:33,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 10:08:33,535 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:33,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:33,536 INFO L82 PathProgramCache]: Analyzing trace with hash 322094823, now seen corresponding path program 1 times [2020-10-14 10:08:33,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:33,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413229613] [2020-10-14 10:08:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:38,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 661 [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:08:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 489 [2020-10-14 10:08:38,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 10:08:38,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:39,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:39,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1706 proven. 0 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2020-10-14 10:08:39,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413229613] [2020-10-14 10:08:39,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:39,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:08:39,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180964581] [2020-10-14 10:08:39,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:08:39,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:39,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:08:39,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:08:39,376 INFO L87 Difference]: Start difference. First operand 4102 states and 6646 transitions. Second operand 6 states. [2020-10-14 10:08:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:40,930 INFO L93 Difference]: Finished difference Result 12148 states and 19759 transitions. [2020-10-14 10:08:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:08:40,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 653 [2020-10-14 10:08:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:40,941 INFO L225 Difference]: With dead ends: 12148 [2020-10-14 10:08:40,941 INFO L226 Difference]: Without dead ends: 8060 [2020-10-14 10:08:40,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:08:40,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8060 states. [2020-10-14 10:08:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8060 to 7830. [2020-10-14 10:08:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7830 states. [2020-10-14 10:08:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7830 states to 7830 states and 12809 transitions. [2020-10-14 10:08:41,173 INFO L78 Accepts]: Start accepts. Automaton has 7830 states and 12809 transitions. Word has length 653 [2020-10-14 10:08:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:41,175 INFO L479 AbstractCegarLoop]: Abstraction has 7830 states and 12809 transitions. [2020-10-14 10:08:41,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:08:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7830 states and 12809 transitions. [2020-10-14 10:08:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2020-10-14 10:08:41,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:41,207 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:41,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 10:08:41,210 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1834457707, now seen corresponding path program 1 times [2020-10-14 10:08:41,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:41,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415856528] [2020-10-14 10:08:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:41,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 661 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 489 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:08:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:46,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:46,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 1702 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-10-14 10:08:46,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415856528] [2020-10-14 10:08:46,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:46,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:08:46,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462190022] [2020-10-14 10:08:46,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:08:46,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:46,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:08:46,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:08:46,887 INFO L87 Difference]: Start difference. First operand 7830 states and 12809 transitions. Second operand 6 states. [2020-10-14 10:08:48,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:48,282 INFO L93 Difference]: Finished difference Result 22727 states and 36234 transitions. [2020-10-14 10:08:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:08:48,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 653 [2020-10-14 10:08:48,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:48,300 INFO L225 Difference]: With dead ends: 22727 [2020-10-14 10:08:48,300 INFO L226 Difference]: Without dead ends: 14911 [2020-10-14 10:08:48,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:08:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14911 states. [2020-10-14 10:08:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14911 to 8742. [2020-10-14 10:08:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8742 states. [2020-10-14 10:08:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 14443 transitions. [2020-10-14 10:08:48,525 INFO L78 Accepts]: Start accepts. Automaton has 8742 states and 14443 transitions. Word has length 653 [2020-10-14 10:08:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:48,526 INFO L479 AbstractCegarLoop]: Abstraction has 8742 states and 14443 transitions. [2020-10-14 10:08:48,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:08:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8742 states and 14443 transitions. [2020-10-14 10:08:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2020-10-14 10:08:48,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:48,546 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:48,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 10:08:48,546 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1970391157, now seen corresponding path program 1 times [2020-10-14 10:08:48,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:48,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875180895] [2020-10-14 10:08:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:51,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-14 10:08:53,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 532 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 10:08:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:53,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:08:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:53,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:08:53,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:08:53,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:08:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:08:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3953 backedges. 1385 proven. 0 refuted. 0 times theorem prover too weak. 2568 trivial. 0 not checked. [2020-10-14 10:08:54,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875180895] [2020-10-14 10:08:54,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:08:54,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:08:54,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098882847] [2020-10-14 10:08:54,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:08:54,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:08:54,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:08:54,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:08:54,114 INFO L87 Difference]: Start difference. First operand 8742 states and 14443 transitions. Second operand 5 states. [2020-10-14 10:08:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:08:55,362 INFO L93 Difference]: Finished difference Result 19823 states and 31972 transitions. [2020-10-14 10:08:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:08:55,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 655 [2020-10-14 10:08:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:08:55,379 INFO L225 Difference]: With dead ends: 19823 [2020-10-14 10:08:55,379 INFO L226 Difference]: Without dead ends: 11095 [2020-10-14 10:08:55,390 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 10:08:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11095 states. [2020-10-14 10:08:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11095 to 8780. [2020-10-14 10:08:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8780 states. [2020-10-14 10:08:55,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 14481 transitions. [2020-10-14 10:08:55,564 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 14481 transitions. Word has length 655 [2020-10-14 10:08:55,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:08:55,564 INFO L479 AbstractCegarLoop]: Abstraction has 8780 states and 14481 transitions. [2020-10-14 10:08:55,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:08:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 14481 transitions. [2020-10-14 10:08:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2020-10-14 10:08:55,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:08:55,579 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 8, 6, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 10:08:55,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 10:08:55,580 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:08:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:08:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1163195577, now seen corresponding path program 1 times [2020-10-14 10:08:55,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:08:55,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616255644] [2020-10-14 10:08:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:08:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:08:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:08:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:00,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 663 [2020-10-14 10:09:00,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 10:09:00,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-14 10:09:00,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:00,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 10:09:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 490 [2020-10-14 10:09:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:09:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:01,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:01,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:01,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3959 backedges. 1711 proven. 0 refuted. 0 times theorem prover too weak. 2248 trivial. 0 not checked. [2020-10-14 10:09:01,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616255644] [2020-10-14 10:09:01,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:01,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 10:09:01,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938920217] [2020-10-14 10:09:01,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 10:09:01,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:01,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 10:09:01,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:09:01,305 INFO L87 Difference]: Start difference. First operand 8780 states and 14481 transitions. Second operand 6 states. [2020-10-14 10:09:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:02,677 INFO L93 Difference]: Finished difference Result 23208 states and 37267 transitions. [2020-10-14 10:09:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 10:09:02,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 655 [2020-10-14 10:09:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:02,703 INFO L225 Difference]: With dead ends: 23208 [2020-10-14 10:09:02,703 INFO L226 Difference]: Without dead ends: 14442 [2020-10-14 10:09:02,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 10:09:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14442 states. [2020-10-14 10:09:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14442 to 9388. [2020-10-14 10:09:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9388 states. [2020-10-14 10:09:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 15583 transitions. [2020-10-14 10:09:02,899 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 15583 transitions. Word has length 655 [2020-10-14 10:09:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:02,899 INFO L479 AbstractCegarLoop]: Abstraction has 9388 states and 15583 transitions. [2020-10-14 10:09:02,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 10:09:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 15583 transitions. [2020-10-14 10:09:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-14 10:09:02,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:02,910 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:02,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 10:09:02,911 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:02,911 INFO L82 PathProgramCache]: Analyzing trace with hash 743177873, now seen corresponding path program 1 times [2020-10-14 10:09:02,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:02,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472849343] [2020-10-14 10:09:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:03,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:03,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:04,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 687 [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:08,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 418 [2020-10-14 10:09:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:09:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:08,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:08,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:08,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:08,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:08,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4349 backedges. 2353 proven. 0 refuted. 0 times theorem prover too weak. 1996 trivial. 0 not checked. [2020-10-14 10:09:08,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472849343] [2020-10-14 10:09:08,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:08,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:08,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972888423] [2020-10-14 10:09:08,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:08,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:08,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:08,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:08,438 INFO L87 Difference]: Start difference. First operand 9388 states and 15583 transitions. Second operand 5 states. [2020-10-14 10:09:09,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:09,564 INFO L93 Difference]: Finished difference Result 21688 states and 35443 transitions. [2020-10-14 10:09:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:09,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 679 [2020-10-14 10:09:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:09,580 INFO L225 Difference]: With dead ends: 21688 [2020-10-14 10:09:09,580 INFO L226 Difference]: Without dead ends: 12314 [2020-10-14 10:09:09,589 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 10:09:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12314 states. [2020-10-14 10:09:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12314 to 10186. [2020-10-14 10:09:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10186 states. [2020-10-14 10:09:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10186 states to 10186 states and 17008 transitions. [2020-10-14 10:09:09,770 INFO L78 Accepts]: Start accepts. Automaton has 10186 states and 17008 transitions. Word has length 679 [2020-10-14 10:09:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:09,771 INFO L479 AbstractCegarLoop]: Abstraction has 10186 states and 17008 transitions. [2020-10-14 10:09:09,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10186 states and 17008 transitions. [2020-10-14 10:09:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 10:09:09,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:09,782 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:09,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 10:09:09,783 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:09,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:09,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1708161349, now seen corresponding path program 1 times [2020-10-14 10:09:09,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:09,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392193291] [2020-10-14 10:09:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:09,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:14,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 360 [2020-10-14 10:09:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:15,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:15,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:15,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:15,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:15,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:15,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:15,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:15,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 10:09:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4170 backedges. 2147 proven. 0 refuted. 0 times theorem prover too weak. 2023 trivial. 0 not checked. [2020-10-14 10:09:15,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392193291] [2020-10-14 10:09:15,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:15,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:15,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058765919] [2020-10-14 10:09:15,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:15,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:15,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:15,886 INFO L87 Difference]: Start difference. First operand 10186 states and 17008 transitions. Second operand 5 states. [2020-10-14 10:09:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:16,819 INFO L93 Difference]: Finished difference Result 30364 states and 50655 transitions. [2020-10-14 10:09:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:16,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 681 [2020-10-14 10:09:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:16,847 INFO L225 Difference]: With dead ends: 30364 [2020-10-14 10:09:16,847 INFO L226 Difference]: Without dead ends: 20192 [2020-10-14 10:09:16,864 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 10:09:16,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20192 states. [2020-10-14 10:09:17,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20192 to 20190. [2020-10-14 10:09:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20190 states. [2020-10-14 10:09:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20190 states to 20190 states and 33473 transitions. [2020-10-14 10:09:17,241 INFO L78 Accepts]: Start accepts. Automaton has 20190 states and 33473 transitions. Word has length 681 [2020-10-14 10:09:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:17,242 INFO L479 AbstractCegarLoop]: Abstraction has 20190 states and 33473 transitions. [2020-10-14 10:09:17,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 20190 states and 33473 transitions. [2020-10-14 10:09:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 10:09:17,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:17,266 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:17,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 10:09:17,267 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:17,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1483666241, now seen corresponding path program 1 times [2020-10-14 10:09:17,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:17,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902001230] [2020-10-14 10:09:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:17,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:17,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:22,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:22,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5303 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 379 [2020-10-14 10:09:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 10:09:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:22,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:22,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:22,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:22,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:22,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:22,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4170 backedges. 2362 proven. 0 refuted. 0 times theorem prover too weak. 1808 trivial. 0 not checked. [2020-10-14 10:09:23,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902001230] [2020-10-14 10:09:23,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:23,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:23,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669749864] [2020-10-14 10:09:23,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:23,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:23,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:23,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:23,066 INFO L87 Difference]: Start difference. First operand 20190 states and 33473 transitions. Second operand 5 states. [2020-10-14 10:09:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:24,598 INFO L93 Difference]: Finished difference Result 44500 states and 73195 transitions. [2020-10-14 10:09:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:24,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 681 [2020-10-14 10:09:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:24,624 INFO L225 Difference]: With dead ends: 44500 [2020-10-14 10:09:24,625 INFO L226 Difference]: Without dead ends: 24329 [2020-10-14 10:09:24,639 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 10:09:24,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24329 states. [2020-10-14 10:09:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24329 to 21083. [2020-10-14 10:09:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21083 states. [2020-10-14 10:09:25,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21083 states to 21083 states and 35050 transitions. [2020-10-14 10:09:25,014 INFO L78 Accepts]: Start accepts. Automaton has 21083 states and 35050 transitions. Word has length 681 [2020-10-14 10:09:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:25,015 INFO L479 AbstractCegarLoop]: Abstraction has 21083 states and 35050 transitions. [2020-10-14 10:09:25,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 21083 states and 35050 transitions. [2020-10-14 10:09:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 10:09:25,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:25,044 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:25,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 10:09:25,045 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:25,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:25,045 INFO L82 PathProgramCache]: Analyzing trace with hash 255871111, now seen corresponding path program 1 times [2020-10-14 10:09:25,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:25,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498290161] [2020-10-14 10:09:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:30,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5577 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 10:09:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:30,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4170 backedges. 1414 proven. 0 refuted. 0 times theorem prover too weak. 2756 trivial. 0 not checked. [2020-10-14 10:09:31,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498290161] [2020-10-14 10:09:31,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:31,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:31,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270955729] [2020-10-14 10:09:31,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:31,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:31,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:31,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:31,077 INFO L87 Difference]: Start difference. First operand 21083 states and 35050 transitions. Second operand 5 states. [2020-10-14 10:09:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:32,652 INFO L93 Difference]: Finished difference Result 45393 states and 74734 transitions. [2020-10-14 10:09:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:32,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 681 [2020-10-14 10:09:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:32,683 INFO L225 Difference]: With dead ends: 45393 [2020-10-14 10:09:32,683 INFO L226 Difference]: Without dead ends: 24329 [2020-10-14 10:09:32,706 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 10:09:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24329 states. [2020-10-14 10:09:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24329 to 21691. [2020-10-14 10:09:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21691 states. [2020-10-14 10:09:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21691 states to 21691 states and 36228 transitions. [2020-10-14 10:09:33,096 INFO L78 Accepts]: Start accepts. Automaton has 21691 states and 36228 transitions. Word has length 681 [2020-10-14 10:09:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:33,096 INFO L479 AbstractCegarLoop]: Abstraction has 21691 states and 36228 transitions. [2020-10-14 10:09:33,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21691 states and 36228 transitions. [2020-10-14 10:09:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 10:09:33,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:33,117 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:33,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 10:09:33,118 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:33,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1082044615, now seen corresponding path program 1 times [2020-10-14 10:09:33,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:33,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699412582] [2020-10-14 10:09:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:33,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:38,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 418 [2020-10-14 10:09:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 10:09:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:38,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:38,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:38,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:38,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:38,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 2358 proven. 0 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2020-10-14 10:09:38,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699412582] [2020-10-14 10:09:38,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:38,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:38,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891206855] [2020-10-14 10:09:38,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:38,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:38,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:38,596 INFO L87 Difference]: Start difference. First operand 21691 states and 36228 transitions. Second operand 5 states. [2020-10-14 10:09:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:40,050 INFO L93 Difference]: Finished difference Result 47619 states and 78075 transitions. [2020-10-14 10:09:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:40,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 681 [2020-10-14 10:09:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:40,081 INFO L225 Difference]: With dead ends: 47619 [2020-10-14 10:09:40,081 INFO L226 Difference]: Without dead ends: 25947 [2020-10-14 10:09:40,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 10:09:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25947 states. [2020-10-14 10:09:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25947 to 18651. [2020-10-14 10:09:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18651 states. [2020-10-14 10:09:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18651 states to 18651 states and 30756 transitions. [2020-10-14 10:09:40,459 INFO L78 Accepts]: Start accepts. Automaton has 18651 states and 30756 transitions. Word has length 681 [2020-10-14 10:09:40,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:40,459 INFO L479 AbstractCegarLoop]: Abstraction has 18651 states and 30756 transitions. [2020-10-14 10:09:40,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18651 states and 30756 transitions. [2020-10-14 10:09:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-14 10:09:40,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:40,478 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 8, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:40,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 10:09:40,478 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 163061145, now seen corresponding path program 1 times [2020-10-14 10:09:40,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:40,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594184782] [2020-10-14 10:09:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:40,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:40,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:40,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:45,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:45,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-14 10:09:45,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 10:09:45,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 10:09:45,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:45,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 10:09:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 379 [2020-10-14 10:09:45,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 10:09:45,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 10:09:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 10:09:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 10:09:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 10:09:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 10:09:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 10:09:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4183 backedges. 2371 proven. 0 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2020-10-14 10:09:45,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594184782] [2020-10-14 10:09:45,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 10:09:45,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 10:09:45,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954508699] [2020-10-14 10:09:45,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 10:09:45,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 10:09:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 10:09:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 10:09:45,936 INFO L87 Difference]: Start difference. First operand 18651 states and 30756 transitions. Second operand 5 states. [2020-10-14 10:09:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 10:09:47,270 INFO L93 Difference]: Finished difference Result 39639 states and 64585 transitions. [2020-10-14 10:09:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 10:09:47,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 683 [2020-10-14 10:09:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 10:09:47,295 INFO L225 Difference]: With dead ends: 39639 [2020-10-14 10:09:47,295 INFO L226 Difference]: Without dead ends: 21007 [2020-10-14 10:09:47,312 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 10:09:47,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21007 states. [2020-10-14 10:09:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21007 to 18651. [2020-10-14 10:09:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18651 states. [2020-10-14 10:09:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18651 states to 18651 states and 30718 transitions. [2020-10-14 10:09:47,777 INFO L78 Accepts]: Start accepts. Automaton has 18651 states and 30718 transitions. Word has length 683 [2020-10-14 10:09:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 10:09:47,778 INFO L479 AbstractCegarLoop]: Abstraction has 18651 states and 30718 transitions. [2020-10-14 10:09:47,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 10:09:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 18651 states and 30718 transitions. [2020-10-14 10:09:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-14 10:09:47,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 10:09:47,803 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:47,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 10:09:47,803 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ssl3_acceptErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 10:09:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 10:09:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash -218159751, now seen corresponding path program 1 times [2020-10-14 10:09:47,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 10:09:47,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696980547] [2020-10-14 10:09:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 10:09:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 10:09:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 10:09:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking...