/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/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:03:09,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:03:09,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:03:09,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:03:09,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:03:09,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:03:09,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:03:09,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:03:09,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:03:09,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:03:09,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:03:09,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:03:09,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:03:09,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:03:09,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:03:09,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:03:09,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:03:09,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:03:09,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:03:09,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:03:09,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:03:09,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:03:09,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:03:09,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:03:09,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:03:09,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:03:09,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:03:09,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:03:09,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:03:09,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:03:09,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:03:09,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:03:09,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:03:09,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:03:09,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:03:09,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:03:09,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:03:09,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:03:09,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:03:09,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:03:09,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:03:09,462 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 09:03:09,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:03:09,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:03:09,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:03:09,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:03:09,509 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:03:09,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:03:09,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:03:09,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:03:09,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:03:09,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:03:09,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:03:09,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:03:09,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:03:09,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:03:09,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:03:09,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:03:09,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:03:09,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:03:09,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:03:09,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:03:09,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:03:09,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:03:09,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:03:09,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:03:09,516 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 09:03:09,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:03:09,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:03:09,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:03:09,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:03:09,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:03:09,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:03:09,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31ef799f7/816eaad9ed334a6aa8d0c026ef681436/FLAG087e9c7bf [2020-10-14 09:03:10,401 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:03:10,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:03:10,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31ef799f7/816eaad9ed334a6aa8d0c026ef681436/FLAG087e9c7bf [2020-10-14 09:03:10,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/31ef799f7/816eaad9ed334a6aa8d0c026ef681436 [2020-10-14 09:03:10,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:03:10,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:03:10,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:03:10,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:03:10,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:03:10,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:10" (1/1) ... [2020-10-14 09:03:10,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d16764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:10, skipping insertion in model container [2020-10-14 09:03:10,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:10" (1/1) ... [2020-10-14 09:03:10,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:03:10,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:03:11,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:03:11,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:03:11,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:03:11,328 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:03:11,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11 WrapperNode [2020-10-14 09:03:11,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:03:11,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:03:11,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:03:11,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:03:11,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (1/1) ... [2020-10-14 09:03:11,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:03:11,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:03:11,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:03:11,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:03:11,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (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 09:03:11,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:03:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:03:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:03:11,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:03:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:03:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:03:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:03:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:03:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:03:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:03:11,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:03:12,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:03:12,238 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:03:12,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:12 BoogieIcfgContainer [2020-10-14 09:03:12,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:03:12,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:03:12,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:03:12,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:03:12,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:03:10" (1/3) ... [2020-10-14 09:03:12,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c71102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:12, skipping insertion in model container [2020-10-14 09:03:12,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:11" (2/3) ... [2020-10-14 09:03:12,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c71102d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:12, skipping insertion in model container [2020-10-14 09:03:12,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:12" (3/3) ... [2020-10-14 09:03:12,254 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:03:12,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:03:12,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:03:12,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:03:12,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:03:12,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:03:12,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:03:12,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:03:12,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:03:12,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:03:12,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:03:12,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:03:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-14 09:03:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 09:03:12,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:12,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:12,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash 271329335, now seen corresponding path program 1 times [2020-10-14 09:03:12,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:12,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428486270] [2020-10-14 09:03:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:14,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 09:03:14,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:03:14,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-14 09:03:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:14,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 09:03:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 09:03:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:03:14,571 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:03:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:14,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:14,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:03:14,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:14,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:14,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:14,630 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 09:03:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428486270] [2020-10-14 09:03:14,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:14,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:14,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971885254] [2020-10-14 09:03:14,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:14,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:14,658 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-10-14 09:03:14,822 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 09:03:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:15,792 INFO L93 Difference]: Finished difference Result 315 states and 508 transitions. [2020-10-14 09:03:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:15,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 09:03:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:15,810 INFO L225 Difference]: With dead ends: 315 [2020-10-14 09:03:15,811 INFO L226 Difference]: Without dead ends: 239 [2020-10-14 09:03:15,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-14 09:03:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 237. [2020-10-14 09:03:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-14 09:03:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 354 transitions. [2020-10-14 09:03:15,921 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 354 transitions. Word has length 53 [2020-10-14 09:03:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:15,922 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 354 transitions. [2020-10-14 09:03:15,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 354 transitions. [2020-10-14 09:03:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:15,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:15,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:15,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:03:15,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash -2067393698, now seen corresponding path program 1 times [2020-10-14 09:03:15,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:15,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841507362] [2020-10-14 09:03:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:17,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:18,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:03:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-10-14 09:03:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 09:03:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:03:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:19,087 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:03:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:19,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:19,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:19,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:19,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:03:19,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:19,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:19,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:19,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:19,113 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 09:03:19,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841507362] [2020-10-14 09:03:19,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:19,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:19,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232521859] [2020-10-14 09:03:19,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:19,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:19,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:19,117 INFO L87 Difference]: Start difference. First operand 237 states and 354 transitions. Second operand 4 states. [2020-10-14 09:03:19,248 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 09:03:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:19,847 INFO L93 Difference]: Finished difference Result 571 states and 876 transitions. [2020-10-14 09:03:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:19,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:03:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:19,852 INFO L225 Difference]: With dead ends: 571 [2020-10-14 09:03:19,852 INFO L226 Difference]: Without dead ends: 405 [2020-10-14 09:03:19,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-14 09:03:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 403. [2020-10-14 09:03:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-10-14 09:03:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 606 transitions. [2020-10-14 09:03:19,886 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 606 transitions. Word has length 56 [2020-10-14 09:03:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:19,887 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 606 transitions. [2020-10-14 09:03:19,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 606 transitions. [2020-10-14 09:03:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:19,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:19,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:19,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:03:19,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1228806752, now seen corresponding path program 1 times [2020-10-14 09:03:19,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:19,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081478970] [2020-10-14 09:03:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:22,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:03:22,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2846 [2020-10-14 09:03:22,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:22,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 09:03:22,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:03:22,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:23,004 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:03:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:23,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:23,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:23,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:03:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:23,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:23,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:23,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:03:23,048 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 09:03:23,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081478970] [2020-10-14 09:03:23,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:23,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:23,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112558917] [2020-10-14 09:03:23,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:23,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:23,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:23,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:23,054 INFO L87 Difference]: Start difference. First operand 403 states and 606 transitions. Second operand 4 states. [2020-10-14 09:03:23,226 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 09:03:24,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:24,107 INFO L93 Difference]: Finished difference Result 975 states and 1490 transitions. [2020-10-14 09:03:24,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:24,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:03:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:24,114 INFO L225 Difference]: With dead ends: 975 [2020-10-14 09:03:24,114 INFO L226 Difference]: Without dead ends: 691 [2020-10-14 09:03:24,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-14 09:03:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2020-10-14 09:03:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 09:03:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1032 transitions. [2020-10-14 09:03:24,199 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1032 transitions. Word has length 56 [2020-10-14 09:03:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:24,203 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1032 transitions. [2020-10-14 09:03:24,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:24,203 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1032 transitions. [2020-10-14 09:03:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:24,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:24,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:24,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:03:24,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:24,221 INFO L82 PathProgramCache]: Analyzing trace with hash -290958880, now seen corresponding path program 1 times [2020-10-14 09:03:24,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:24,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872344090] [2020-10-14 09:03:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:27,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:03:27,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3513 [2020-10-14 09:03:27,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:27,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:27,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:03:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:03:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 09:03:27,929 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:03:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:27,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:03:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:27,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:27,964 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 09:03:27,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872344090] [2020-10-14 09:03:27,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:27,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:27,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016269123] [2020-10-14 09:03:27,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:27,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:27,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:27,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:27,968 INFO L87 Difference]: Start difference. First operand 689 states and 1032 transitions. Second operand 4 states. [2020-10-14 09:03:28,098 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 09:03:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:28,840 INFO L93 Difference]: Finished difference Result 1763 states and 2656 transitions. [2020-10-14 09:03:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:28,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:03:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:28,848 INFO L225 Difference]: With dead ends: 1763 [2020-10-14 09:03:28,848 INFO L226 Difference]: Without dead ends: 1169 [2020-10-14 09:03:28,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-10-14 09:03:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1167. [2020-10-14 09:03:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-10-14 09:03:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1714 transitions. [2020-10-14 09:03:28,915 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1714 transitions. Word has length 56 [2020-10-14 09:03:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:28,916 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1714 transitions. [2020-10-14 09:03:28,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1714 transitions. [2020-10-14 09:03:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:03:28,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:28,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:28,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:03:28,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:28,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:28,920 INFO L82 PathProgramCache]: Analyzing trace with hash -377427777, now seen corresponding path program 1 times [2020-10-14 09:03:28,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:28,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902531614] [2020-10-14 09:03:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:29,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:31,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:03:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2250 [2020-10-14 09:03:31,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:31,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 09:03:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:03:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:31,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:31,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:31,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:03:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:31,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:31,374 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 09:03:31,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902531614] [2020-10-14 09:03:31,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:31,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:31,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103834330] [2020-10-14 09:03:31,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:31,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:31,378 INFO L87 Difference]: Start difference. First operand 1167 states and 1714 transitions. Second operand 6 states. [2020-10-14 09:03:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:32,302 INFO L93 Difference]: Finished difference Result 3225 states and 4817 transitions. [2020-10-14 09:03:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:32,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:03:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:32,317 INFO L225 Difference]: With dead ends: 3225 [2020-10-14 09:03:32,318 INFO L226 Difference]: Without dead ends: 2511 [2020-10-14 09:03:32,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-10-14 09:03:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1366. [2020-10-14 09:03:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-14 09:03:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2024 transitions. [2020-10-14 09:03:32,427 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2024 transitions. Word has length 57 [2020-10-14 09:03:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:32,427 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 2024 transitions. [2020-10-14 09:03:32,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2024 transitions. [2020-10-14 09:03:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:03:32,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:32,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:32,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:03:32,430 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash 613689505, now seen corresponding path program 1 times [2020-10-14 09:03:32,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:32,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744827634] [2020-10-14 09:03:32,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:32,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:34,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:03:34,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2252 [2020-10-14 09:03:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:34,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:03:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:03:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:03:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:34,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:34,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:03:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:34,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:34,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:34,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:34,851 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 09:03:34,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744827634] [2020-10-14 09:03:34,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:34,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:34,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290707462] [2020-10-14 09:03:34,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:34,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:34,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:34,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:34,854 INFO L87 Difference]: Start difference. First operand 1366 states and 2024 transitions. Second operand 6 states. [2020-10-14 09:03:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:35,783 INFO L93 Difference]: Finished difference Result 3730 states and 5589 transitions. [2020-10-14 09:03:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:35,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:03:35,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:35,805 INFO L225 Difference]: With dead ends: 3730 [2020-10-14 09:03:35,805 INFO L226 Difference]: Without dead ends: 3016 [2020-10-14 09:03:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:35,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2020-10-14 09:03:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1757. [2020-10-14 09:03:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1757 states. [2020-10-14 09:03:35,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2625 transitions. [2020-10-14 09:03:35,993 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2625 transitions. Word has length 57 [2020-10-14 09:03:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:35,995 INFO L479 AbstractCegarLoop]: Abstraction has 1757 states and 2625 transitions. [2020-10-14 09:03:35,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2625 transitions. [2020-10-14 09:03:35,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:03:35,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:35,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:35,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:03:35,999 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:36,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash -474490290, now seen corresponding path program 1 times [2020-10-14 09:03:36,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:36,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045008964] [2020-10-14 09:03:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:03:38,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:03:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2217 [2020-10-14 09:03:38,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:38,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:03:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 09:03:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:38,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:38,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:38,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:03:38,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:38,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:38,415 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 09:03:38,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045008964] [2020-10-14 09:03:38,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:38,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:38,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394284280] [2020-10-14 09:03:38,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:38,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:38,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:38,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:38,418 INFO L87 Difference]: Start difference. First operand 1757 states and 2625 transitions. Second operand 6 states. [2020-10-14 09:03:38,568 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-14 09:03:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:39,442 INFO L93 Difference]: Finished difference Result 4117 states and 6168 transitions. [2020-10-14 09:03:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:39,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:03:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:39,460 INFO L225 Difference]: With dead ends: 4117 [2020-10-14 09:03:39,461 INFO L226 Difference]: Without dead ends: 3403 [2020-10-14 09:03:39,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-10-14 09:03:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 2142. [2020-10-14 09:03:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2020-10-14 09:03:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3210 transitions. [2020-10-14 09:03:39,601 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3210 transitions. Word has length 57 [2020-10-14 09:03:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:39,601 INFO L479 AbstractCegarLoop]: Abstraction has 2142 states and 3210 transitions. [2020-10-14 09:03:39,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3210 transitions. [2020-10-14 09:03:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:03:39,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:39,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:39,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:03:39,604 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:39,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1375907819, now seen corresponding path program 1 times [2020-10-14 09:03:39,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:39,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017110513] [2020-10-14 09:03:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:03:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:03:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:44,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:03:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:44,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:44,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:44,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:44,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:44,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 09:03:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:44,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:03:44,852 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 09:03:44,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017110513] [2020-10-14 09:03:44,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:44,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:03:44,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899821345] [2020-10-14 09:03:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:44,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:44,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:44,864 INFO L87 Difference]: Start difference. First operand 2142 states and 3210 transitions. Second operand 6 states. [2020-10-14 09:03:45,006 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 09:03:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:45,891 INFO L93 Difference]: Finished difference Result 4913 states and 7372 transitions. [2020-10-14 09:03:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:45,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 09:03:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:45,906 INFO L225 Difference]: With dead ends: 4913 [2020-10-14 09:03:45,906 INFO L226 Difference]: Without dead ends: 2856 [2020-10-14 09:03:45,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:03:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-10-14 09:03:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2841. [2020-10-14 09:03:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2020-10-14 09:03:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4221 transitions. [2020-10-14 09:03:46,092 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4221 transitions. Word has length 61 [2020-10-14 09:03:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:46,093 INFO L479 AbstractCegarLoop]: Abstraction has 2841 states and 4221 transitions. [2020-10-14 09:03:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4221 transitions. [2020-10-14 09:03:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:03:46,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:46,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:46,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:03:46,096 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:46,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1048297348, now seen corresponding path program 1 times [2020-10-14 09:03:46,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:46,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922058694] [2020-10-14 09:03:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:51,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:03:51,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:03:51,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:03:51,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:51,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:03:51,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 09:03:51,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:51,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:51,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:51,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:03:51,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:51,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:51,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:51,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:51,272 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 09:03:51,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922058694] [2020-10-14 09:03:51,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:51,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:51,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818585441] [2020-10-14 09:03:51,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:51,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:51,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:51,275 INFO L87 Difference]: Start difference. First operand 2841 states and 4221 transitions. Second operand 6 states. [2020-10-14 09:03:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:53,776 INFO L93 Difference]: Finished difference Result 21007 states and 31456 transitions. [2020-10-14 09:03:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:03:53,777 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 09:03:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:53,854 INFO L225 Difference]: With dead ends: 21007 [2020-10-14 09:03:53,854 INFO L226 Difference]: Without dead ends: 18491 [2020-10-14 09:03:53,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:03:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18491 states. [2020-10-14 09:03:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18491 to 9984. [2020-10-14 09:03:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9984 states. [2020-10-14 09:03:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9984 states to 9984 states and 14863 transitions. [2020-10-14 09:03:54,549 INFO L78 Accepts]: Start accepts. Automaton has 9984 states and 14863 transitions. Word has length 61 [2020-10-14 09:03:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:54,550 INFO L479 AbstractCegarLoop]: Abstraction has 9984 states and 14863 transitions. [2020-10-14 09:03:54,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:54,550 INFO L276 IsEmpty]: Start isEmpty. Operand 9984 states and 14863 transitions. [2020-10-14 09:03:54,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:03:54,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:54,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:03:54,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:03:54,555 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:54,555 INFO L82 PathProgramCache]: Analyzing trace with hash 837320045, now seen corresponding path program 1 times [2020-10-14 09:03:54,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:54,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525153058] [2020-10-14 09:03:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:55,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:59,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:03:59,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:03:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:03:59,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:59,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:03:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:03:59,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:59,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:59,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:59,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:59,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:03:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:59,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:59,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:03:59,714 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 09:03:59,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525153058] [2020-10-14 09:03:59,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:59,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:59,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606811884] [2020-10-14 09:03:59,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:59,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:59,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:59,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:59,717 INFO L87 Difference]: Start difference. First operand 9984 states and 14863 transitions. Second operand 6 states. [2020-10-14 09:04:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:03,576 INFO L93 Difference]: Finished difference Result 72595 states and 107967 transitions. [2020-10-14 09:04:03,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:04:03,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-14 09:04:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:03,763 INFO L225 Difference]: With dead ends: 72595 [2020-10-14 09:04:03,763 INFO L226 Difference]: Without dead ends: 63185 [2020-10-14 09:04:03,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:04:03,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63185 states. [2020-10-14 09:04:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63185 to 36307. [2020-10-14 09:04:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36307 states. [2020-10-14 09:04:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36307 states to 36307 states and 53720 transitions. [2020-10-14 09:04:06,960 INFO L78 Accepts]: Start accepts. Automaton has 36307 states and 53720 transitions. Word has length 62 [2020-10-14 09:04:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:06,960 INFO L479 AbstractCegarLoop]: Abstraction has 36307 states and 53720 transitions. [2020-10-14 09:04:06,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand 36307 states and 53720 transitions. [2020-10-14 09:04:06,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:04:06,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:06,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:06,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:04:06,978 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:06,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:06,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1279318145, now seen corresponding path program 1 times [2020-10-14 09:04:06,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:06,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832338703] [2020-10-14 09:04:06,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:04:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 09:04:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:12,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:12,131 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 09:04:12,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832338703] [2020-10-14 09:04:12,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:12,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:12,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409432258] [2020-10-14 09:04:12,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:12,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:12,133 INFO L87 Difference]: Start difference. First operand 36307 states and 53720 transitions. Second operand 6 states. [2020-10-14 09:04:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:19,584 INFO L93 Difference]: Finished difference Result 181626 states and 266946 transitions. [2020-10-14 09:04:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:04:19,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-14 09:04:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:19,969 INFO L225 Difference]: With dead ends: 181626 [2020-10-14 09:04:19,969 INFO L226 Difference]: Without dead ends: 149942 [2020-10-14 09:04:20,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149942 states. [2020-10-14 09:04:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149942 to 35815. [2020-10-14 09:04:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35815 states. [2020-10-14 09:04:24,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35815 states to 35815 states and 52628 transitions. [2020-10-14 09:04:24,642 INFO L78 Accepts]: Start accepts. Automaton has 35815 states and 52628 transitions. Word has length 63 [2020-10-14 09:04:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:24,642 INFO L479 AbstractCegarLoop]: Abstraction has 35815 states and 52628 transitions. [2020-10-14 09:04:24,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35815 states and 52628 transitions. [2020-10-14 09:04:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:04:24,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:24,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:24,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:04:24,655 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1598465569, now seen corresponding path program 1 times [2020-10-14 09:04:24,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:24,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494529158] [2020-10-14 09:04:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:29,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:04:29,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:04:29,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:29,799 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 09:04:29,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494529158] [2020-10-14 09:04:29,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:29,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:29,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579215217] [2020-10-14 09:04:29,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:29,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:29,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:29,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:29,801 INFO L87 Difference]: Start difference. First operand 35815 states and 52628 transitions. Second operand 6 states. [2020-10-14 09:04:38,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:38,102 INFO L93 Difference]: Finished difference Result 153226 states and 224015 transitions. [2020-10-14 09:04:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:04:38,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-14 09:04:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:38,351 INFO L225 Difference]: With dead ends: 153226 [2020-10-14 09:04:38,351 INFO L226 Difference]: Without dead ends: 120929 [2020-10-14 09:04:38,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120929 states. [2020-10-14 09:04:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120929 to 35366. [2020-10-14 09:04:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35366 states. [2020-10-14 09:04:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35366 states to 35366 states and 51459 transitions. [2020-10-14 09:04:41,097 INFO L78 Accepts]: Start accepts. Automaton has 35366 states and 51459 transitions. Word has length 63 [2020-10-14 09:04:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:41,097 INFO L479 AbstractCegarLoop]: Abstraction has 35366 states and 51459 transitions. [2020-10-14 09:04:41,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35366 states and 51459 transitions. [2020-10-14 09:04:41,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:04:41,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:41,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:04:41,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:04:41,107 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:41,108 INFO L82 PathProgramCache]: Analyzing trace with hash -203484509, now seen corresponding path program 1 times [2020-10-14 09:04:41,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:41,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712284858] [2020-10-14 09:04:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 09:04:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-14 09:04:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 09:04:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:46,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:46,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:46,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:46,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:04:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:46,254 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 09:04:46,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712284858] [2020-10-14 09:04:46,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:46,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:46,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139582427] [2020-10-14 09:04:46,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:46,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:46,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:46,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:46,256 INFO L87 Difference]: Start difference. First operand 35366 states and 51459 transitions. Second operand 6 states. [2020-10-14 09:04:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:57,833 INFO L93 Difference]: Finished difference Result 205850 states and 295580 transitions. [2020-10-14 09:04:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:04:57,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-14 09:04:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:58,127 INFO L225 Difference]: With dead ends: 205850 [2020-10-14 09:04:58,128 INFO L226 Difference]: Without dead ends: 174472 [2020-10-14 09:04:58,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174472 states. [2020-10-14 09:05:02,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174472 to 34762. [2020-10-14 09:05:02,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34762 states. [2020-10-14 09:05:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 50134 transitions. [2020-10-14 09:05:03,032 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 50134 transitions. Word has length 63 [2020-10-14 09:05:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:03,032 INFO L479 AbstractCegarLoop]: Abstraction has 34762 states and 50134 transitions. [2020-10-14 09:05:03,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 50134 transitions. [2020-10-14 09:05:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 09:05:03,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:03,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:03,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:05:03,042 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:03,044 INFO L82 PathProgramCache]: Analyzing trace with hash 58184420, now seen corresponding path program 1 times [2020-10-14 09:05:03,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:03,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529910666] [2020-10-14 09:05:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:08,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:08,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 09:05:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:05:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:05:08,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:08,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:05:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:08,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:08,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:08,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:08,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:08,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:08,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:08,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:08,271 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 09:05:08,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529910666] [2020-10-14 09:05:08,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:08,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:05:08,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891368011] [2020-10-14 09:05:08,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:08,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:08,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:08,274 INFO L87 Difference]: Start difference. First operand 34762 states and 50134 transitions. Second operand 6 states. [2020-10-14 09:05:10,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:10,690 INFO L93 Difference]: Finished difference Result 52582 states and 76035 transitions. [2020-10-14 09:05:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:05:10,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 09:05:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:10,733 INFO L225 Difference]: With dead ends: 52582 [2020-10-14 09:05:10,733 INFO L226 Difference]: Without dead ends: 25227 [2020-10-14 09:05:10,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:05:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25227 states. [2020-10-14 09:05:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25227 to 25143. [2020-10-14 09:05:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25143 states. [2020-10-14 09:05:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25143 states to 25143 states and 36184 transitions. [2020-10-14 09:05:12,427 INFO L78 Accepts]: Start accepts. Automaton has 25143 states and 36184 transitions. Word has length 64 [2020-10-14 09:05:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:12,427 INFO L479 AbstractCegarLoop]: Abstraction has 25143 states and 36184 transitions. [2020-10-14 09:05:12,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 25143 states and 36184 transitions. [2020-10-14 09:05:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 09:05:12,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:12,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:12,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:05:12,431 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash 534801159, now seen corresponding path program 1 times [2020-10-14 09:05:12,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:12,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845794523] [2020-10-14 09:05:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:17,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 09:05:17,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:05:17,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:05:17,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:17,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:05:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:17,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:17,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:17,591 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 09:05:17,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845794523] [2020-10-14 09:05:17,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:17,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:05:17,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910874647] [2020-10-14 09:05:17,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:17,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:17,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:17,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:17,593 INFO L87 Difference]: Start difference. First operand 25143 states and 36184 transitions. Second operand 6 states. [2020-10-14 09:05:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:19,489 INFO L93 Difference]: Finished difference Result 34977 states and 50355 transitions. [2020-10-14 09:05:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:05:19,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 09:05:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:19,507 INFO L225 Difference]: With dead ends: 34977 [2020-10-14 09:05:19,508 INFO L226 Difference]: Without dead ends: 15008 [2020-10-14 09:05:19,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15008 states. [2020-10-14 09:05:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15008 to 14952. [2020-10-14 09:05:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14952 states. [2020-10-14 09:05:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 21323 transitions. [2020-10-14 09:05:20,511 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 21323 transitions. Word has length 64 [2020-10-14 09:05:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:20,512 INFO L479 AbstractCegarLoop]: Abstraction has 14952 states and 21323 transitions. [2020-10-14 09:05:20,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 21323 transitions. [2020-10-14 09:05:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:05:20,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:20,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:20,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:05:20,515 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash -383403784, now seen corresponding path program 1 times [2020-10-14 09:05:20,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:20,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44226807] [2020-10-14 09:05:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:05:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:05:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:25,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:25,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:25,844 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 09:05:25,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44226807] [2020-10-14 09:05:25,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:25,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 09:05:25,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924103758] [2020-10-14 09:05:25,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:05:25,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:05:25,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:05:25,849 INFO L87 Difference]: Start difference. First operand 14952 states and 21323 transitions. Second operand 11 states. [2020-10-14 09:05:26,004 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 09:05:42,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:42,385 INFO L93 Difference]: Finished difference Result 148779 states and 212500 transitions. [2020-10-14 09:05:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 09:05:42,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-14 09:05:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:42,564 INFO L225 Difference]: With dead ends: 148779 [2020-10-14 09:05:42,564 INFO L226 Difference]: Without dead ends: 134388 [2020-10-14 09:05:42,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=332, Invalid=928, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 09:05:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134388 states. [2020-10-14 09:05:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134388 to 44483. [2020-10-14 09:05:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44483 states. [2020-10-14 09:05:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44483 states to 44483 states and 64039 transitions. [2020-10-14 09:05:48,062 INFO L78 Accepts]: Start accepts. Automaton has 44483 states and 64039 transitions. Word has length 65 [2020-10-14 09:05:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:48,062 INFO L479 AbstractCegarLoop]: Abstraction has 44483 states and 64039 transitions. [2020-10-14 09:05:48,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:05:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44483 states and 64039 transitions. [2020-10-14 09:05:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:05:48,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:48,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:05:48,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:05:48,066 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:48,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2039349004, now seen corresponding path program 1 times [2020-10-14 09:05:48,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:48,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451095493] [2020-10-14 09:05:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:48,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:50,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:53,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:05:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 09:05:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:53,337 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 09:05:53,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451095493] [2020-10-14 09:05:53,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:53,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:05:53,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075046913] [2020-10-14 09:05:53,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:05:53,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:53,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:05:53,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:05:53,339 INFO L87 Difference]: Start difference. First operand 44483 states and 64039 transitions. Second operand 11 states. [2020-10-14 09:05:53,506 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 09:06:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:06,456 INFO L93 Difference]: Finished difference Result 142098 states and 203794 transitions. [2020-10-14 09:06:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 09:06:06,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-14 09:06:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:06,598 INFO L225 Difference]: With dead ends: 142098 [2020-10-14 09:06:06,599 INFO L226 Difference]: Without dead ends: 99000 [2020-10-14 09:06:06,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-14 09:06:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99000 states. [2020-10-14 09:06:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99000 to 44409. [2020-10-14 09:06:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44409 states. [2020-10-14 09:06:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44409 states to 44409 states and 63919 transitions. [2020-10-14 09:06:11,833 INFO L78 Accepts]: Start accepts. Automaton has 44409 states and 63919 transitions. Word has length 65 [2020-10-14 09:06:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:11,833 INFO L479 AbstractCegarLoop]: Abstraction has 44409 states and 63919 transitions. [2020-10-14 09:06:11,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:06:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 44409 states and 63919 transitions. [2020-10-14 09:06:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:06:11,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:11,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:11,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:06:11,836 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1200762058, now seen corresponding path program 1 times [2020-10-14 09:06:11,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:11,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403393587] [2020-10-14 09:06:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:11,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:14,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:16,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:16,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:06:16,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:06:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:06:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:06:16,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:06:16,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 09:06:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:17,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:17,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:17,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:17,151 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 09:06:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403393587] [2020-10-14 09:06:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:17,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:06:17,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71809168] [2020-10-14 09:06:17,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:06:17,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:17,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:06:17,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:17,153 INFO L87 Difference]: Start difference. First operand 44409 states and 63919 transitions. Second operand 10 states. [2020-10-14 09:06:17,285 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-14 09:06:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:29,042 INFO L93 Difference]: Finished difference Result 92256 states and 131784 transitions. [2020-10-14 09:06:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:06:29,043 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-14 09:06:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:29,137 INFO L225 Difference]: With dead ends: 92256 [2020-10-14 09:06:29,138 INFO L226 Difference]: Without dead ends: 78318 [2020-10-14 09:06:29,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-14 09:06:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78318 states. [2020-10-14 09:06:35,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78318 to 44232. [2020-10-14 09:06:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44232 states. [2020-10-14 09:06:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44232 states to 44232 states and 63665 transitions. [2020-10-14 09:06:35,150 INFO L78 Accepts]: Start accepts. Automaton has 44232 states and 63665 transitions. Word has length 65 [2020-10-14 09:06:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 44232 states and 63665 transitions. [2020-10-14 09:06:35,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:06:35,151 INFO L276 IsEmpty]: Start isEmpty. Operand 44232 states and 63665 transitions. [2020-10-14 09:06:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 09:06:35,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:35,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:35,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:06:35,154 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:35,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:35,154 INFO L82 PathProgramCache]: Analyzing trace with hash -193872271, now seen corresponding path program 1 times [2020-10-14 09:06:35,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:35,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612818611] [2020-10-14 09:06:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2620 [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 09:06:37,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:06:37,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:37,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,905 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 09:06:37,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612818611] [2020-10-14 09:06:37,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:37,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:37,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405167012] [2020-10-14 09:06:37,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:37,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:37,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:37,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:37,907 INFO L87 Difference]: Start difference. First operand 44232 states and 63665 transitions. Second operand 4 states. [2020-10-14 09:06:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:42,316 INFO L93 Difference]: Finished difference Result 51226 states and 73538 transitions. [2020-10-14 09:06:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:06:42,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 09:06:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:42,354 INFO L225 Difference]: With dead ends: 51226 [2020-10-14 09:06:42,355 INFO L226 Difference]: Without dead ends: 29539 [2020-10-14 09:06:42,377 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 09:06:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29539 states. [2020-10-14 09:06:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29539 to 18921. [2020-10-14 09:06:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18921 states. [2020-10-14 09:06:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18921 states to 18921 states and 26828 transitions. [2020-10-14 09:06:45,012 INFO L78 Accepts]: Start accepts. Automaton has 18921 states and 26828 transitions. Word has length 66 [2020-10-14 09:06:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:45,013 INFO L479 AbstractCegarLoop]: Abstraction has 18921 states and 26828 transitions. [2020-10-14 09:06:45,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 18921 states and 26828 transitions. [2020-10-14 09:06:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:06:45,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:45,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:45,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:06:45,016 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:45,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:45,016 INFO L82 PathProgramCache]: Analyzing trace with hash 237164267, now seen corresponding path program 1 times [2020-10-14 09:06:45,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:45,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891037237] [2020-10-14 09:06:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:06:48,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:06:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:48,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,429 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 09:06:48,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891037237] [2020-10-14 09:06:48,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:48,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:06:48,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684877701] [2020-10-14 09:06:48,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:06:48,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:48,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:06:48,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:48,431 INFO L87 Difference]: Start difference. First operand 18921 states and 26828 transitions. Second operand 10 states.