/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+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:03:09,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:03:09,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:03:09,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:03:09,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:03:09,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:03:09,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:03:09,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:03:09,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:03:09,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:03:09,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:03:09,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:03:09,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:03:09,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:03:09,419 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 09:03:09,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:03:09,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:03:09,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:03:09,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:03:09,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:03:09,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:03:09,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:03:09,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:03:09,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:03:09,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:03:09,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:03:09,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:03:09,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:03:09,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:03:09,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:03:09,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:03:09,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:03:09,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:03:09,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:03:09,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:03:09,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:03:09,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:03:09,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:03:09,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:03:09,441 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 09:03:09,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:03:09,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:03:09,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:03:09,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:03:09,475 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:03:09,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:03:09,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:03:09,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:03:09,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:03:09,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:03:09,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:03:09,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:03:09,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:03:09,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:03:09,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:03:09,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:03:09,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:03:09,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:03:09,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:03:09,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:03:09,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:03:09,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:03:09,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:03:09,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:03:09,482 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 09:03:09,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:03:09,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:03:09,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:03:09,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:03:09,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:03:09,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:03:09,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5adc1422/04b4fb1b0c8941a99c6d1e3839e8c38d/FLAG550006e4b [2020-10-14 09:03:10,479 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:03:10,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:03:10,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5adc1422/04b4fb1b0c8941a99c6d1e3839e8c38d/FLAG550006e4b [2020-10-14 09:03:10,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5adc1422/04b4fb1b0c8941a99c6d1e3839e8c38d [2020-10-14 09:03:10,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:03:10,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:03:10,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:03:10,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:03:10,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:03:10,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:10" (1/1) ... [2020-10-14 09:03:10,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc1f18c 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 09:03:10,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:03:10" (1/1) ... [2020-10-14 09:03:10,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:03:10,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:03:11,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:03:11,987 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:03:12,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:03:12,464 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:03:12,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12 WrapperNode [2020-10-14 09:03:12,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:03:12,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:03:12,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:03:12,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:03:12,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (1/1) ... [2020-10-14 09:03:12,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:03:12,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:03:12,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:03:12,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:03:12,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (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 09:03:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:03:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:03:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:03:12,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:03:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:03:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:03:12,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:03:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:03:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:03:12,824 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:03:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:03:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:03:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:03:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:03:12,825 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:03:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:03:12,826 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:03:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:03:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:03:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:03:12,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:03:15,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:03:15,901 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:03:15,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:15 BoogieIcfgContainer [2020-10-14 09:03:15,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:03:15,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:03:15,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:03:15,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:03:15,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:03:10" (1/3) ... [2020-10-14 09:03:15,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd67c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:15, skipping insertion in model container [2020-10-14 09:03:15,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:03:12" (2/3) ... [2020-10-14 09:03:15,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd67c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:03:15, skipping insertion in model container [2020-10-14 09:03:15,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:03:15" (3/3) ... [2020-10-14 09:03:15,922 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-14 09:03:15,932 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:03:15,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 09:03:15,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 09:03:16,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:03:16,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:03:16,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:03:16,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:03:16,031 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:03:16,031 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:03:16,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:03:16,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:03:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2020-10-14 09:03:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:03:16,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:16,089 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] [2020-10-14 09:03:16,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:16,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1150486229, now seen corresponding path program 1 times [2020-10-14 09:03:16,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:16,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057019086] [2020-10-14 09:03:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:21,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:03:21,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:03:21,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:03:21,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:21,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:03:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:03:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:03:22,136 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:03:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:22,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:22,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:03:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:22,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:22,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:22,199 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 09:03:22,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057019086] [2020-10-14 09:03:22,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:22,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:03:22,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523890502] [2020-10-14 09:03:22,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:22,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:22,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:22,224 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2020-10-14 09:03:22,982 WARN L193 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-14 09:03:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:33,273 INFO L93 Difference]: Finished difference Result 3383 states and 5888 transitions. [2020-10-14 09:03:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:03:33,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 09:03:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:33,307 INFO L225 Difference]: With dead ends: 3383 [2020-10-14 09:03:33,307 INFO L226 Difference]: Without dead ends: 2341 [2020-10-14 09:03:33,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:03:33,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2020-10-14 09:03:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2185. [2020-10-14 09:03:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-10-14 09:03:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2940 transitions. [2020-10-14 09:03:33,481 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2940 transitions. Word has length 55 [2020-10-14 09:03:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:33,482 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2940 transitions. [2020-10-14 09:03:33,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2940 transitions. [2020-10-14 09:03:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:33,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:33,488 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 09:03:33,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:03:33,489 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:33,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:33,489 INFO L82 PathProgramCache]: Analyzing trace with hash 705370957, now seen corresponding path program 1 times [2020-10-14 09:03:33,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:33,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666838121] [2020-10-14 09:03:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:33,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:33,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:33,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:35,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:38,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:38,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:03:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:03:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:03:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:38,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:03:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:03:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:39,047 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:03:39,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:03:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:39,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:03:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:03:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:39,122 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 09:03:39,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666838121] [2020-10-14 09:03:39,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:39,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:03:39,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740020373] [2020-10-14 09:03:39,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:03:39,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:03:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:03:39,126 INFO L87 Difference]: Start difference. First operand 2185 states and 2940 transitions. Second operand 4 states. [2020-10-14 09:03:39,592 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-14 09:03:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:44,997 INFO L93 Difference]: Finished difference Result 3370 states and 4647 transitions. [2020-10-14 09:03:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:03:45,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 09:03:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:45,017 INFO L225 Difference]: With dead ends: 3370 [2020-10-14 09:03:45,017 INFO L226 Difference]: Without dead ends: 2407 [2020-10-14 09:03:45,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:03:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2020-10-14 09:03:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2401. [2020-10-14 09:03:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2401 states. [2020-10-14 09:03:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3260 transitions. [2020-10-14 09:03:45,158 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3260 transitions. Word has length 56 [2020-10-14 09:03:45,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:45,159 INFO L479 AbstractCegarLoop]: Abstraction has 2401 states and 3260 transitions. [2020-10-14 09:03:45,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:03:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3260 transitions. [2020-10-14 09:03:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:45,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:45,168 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 09:03:45,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:03:45,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:45,170 INFO L82 PathProgramCache]: Analyzing trace with hash 185145934, now seen corresponding path program 1 times [2020-10-14 09:03:45,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:45,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488567142] [2020-10-14 09:03:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:45,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:50,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:03:50,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:03:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:03:50,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:50,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:03:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:03:50,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 09:03:50,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:50,846 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:03:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:03:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:50,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:03:50,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:03:50,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:03:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:03:50,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:03:50,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:03:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:03:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:03:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:03:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:03:50,923 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 09:03:50,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488567142] [2020-10-14 09:03:50,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:03:50,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:03:50,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725316193] [2020-10-14 09:03:50,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:03:50,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:03:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:03:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:03:50,925 INFO L87 Difference]: Start difference. First operand 2401 states and 3260 transitions. Second operand 6 states. [2020-10-14 09:03:51,434 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2020-10-14 09:03:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:03:56,258 INFO L93 Difference]: Finished difference Result 4923 states and 6801 transitions. [2020-10-14 09:03:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:03:56,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:03:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:03:56,274 INFO L225 Difference]: With dead ends: 4923 [2020-10-14 09:03:56,275 INFO L226 Difference]: Without dead ends: 3260 [2020-10-14 09:03:56,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:03:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2020-10-14 09:03:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3247. [2020-10-14 09:03:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-14 09:03:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4478 transitions. [2020-10-14 09:03:56,403 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4478 transitions. Word has length 56 [2020-10-14 09:03:56,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:03:56,404 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 4478 transitions. [2020-10-14 09:03:56,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:03:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4478 transitions. [2020-10-14 09:03:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:03:56,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:03:56,408 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 09:03:56,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:03:56,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:03:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:03:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1294211967, now seen corresponding path program 1 times [2020-10-14 09:03:56,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:03:56,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419412730] [2020-10-14 09:03:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:03:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:03:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:57,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:03:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:01,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:01,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:04:01,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:04:01,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:04:01,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:01,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:04:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:04:01,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:04:01,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:01,956 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:01,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:01,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:01,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:04:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:01,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:01,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:01,998 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 09:04:01,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419412730] [2020-10-14 09:04:01,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:01,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:04:02,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519051843] [2020-10-14 09:04:02,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:04:02,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:04:02,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:04:02,001 INFO L87 Difference]: Start difference. First operand 3247 states and 4478 transitions. Second operand 6 states. [2020-10-14 09:04:02,539 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-14 09:04:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:08,373 INFO L93 Difference]: Finished difference Result 7433 states and 10850 transitions. [2020-10-14 09:04:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:04:08,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:04:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:08,400 INFO L225 Difference]: With dead ends: 7433 [2020-10-14 09:04:08,400 INFO L226 Difference]: Without dead ends: 6484 [2020-10-14 09:04:08,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2020-10-14 09:04:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 4641. [2020-10-14 09:04:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4641 states. [2020-10-14 09:04:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6509 transitions. [2020-10-14 09:04:08,594 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6509 transitions. Word has length 56 [2020-10-14 09:04:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:08,594 INFO L479 AbstractCegarLoop]: Abstraction has 4641 states and 6509 transitions. [2020-10-14 09:04:08,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:04:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6509 transitions. [2020-10-14 09:04:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:04:08,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:08,601 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 09:04:08,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:04:08,601 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash 215676365, now seen corresponding path program 1 times [2020-10-14 09:04:08,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:08,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160426311] [2020-10-14 09:04:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:08,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:08,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:11,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:13,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:13,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:04:13,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:04:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:04:13,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:13,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:04:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:13,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:04:13,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:14,410 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:14,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:14,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:14,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 09:04:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:14,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:14,526 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 09:04:14,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160426311] [2020-10-14 09:04:14,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:14,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:14,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33412715] [2020-10-14 09:04:14,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:04:14,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:04:14,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:14,535 INFO L87 Difference]: Start difference. First operand 4641 states and 6509 transitions. Second operand 10 states. [2020-10-14 09:04:15,234 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-10-14 09:04:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:21,710 INFO L93 Difference]: Finished difference Result 7558 states and 10927 transitions. [2020-10-14 09:04:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 09:04:21,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 09:04:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:21,732 INFO L225 Difference]: With dead ends: 7558 [2020-10-14 09:04:21,732 INFO L226 Difference]: Without dead ends: 4998 [2020-10-14 09:04:21,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-14 09:04:21,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2020-10-14 09:04:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 3051. [2020-10-14 09:04:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2020-10-14 09:04:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4200 transitions. [2020-10-14 09:04:21,892 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4200 transitions. Word has length 57 [2020-10-14 09:04:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:21,892 INFO L479 AbstractCegarLoop]: Abstraction has 3051 states and 4200 transitions. [2020-10-14 09:04:21,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:04:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4200 transitions. [2020-10-14 09:04:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:04:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:21,898 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 09:04:21,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:04:21,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:21,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:21,899 INFO L82 PathProgramCache]: Analyzing trace with hash -717922590, now seen corresponding path program 1 times [2020-10-14 09:04:21,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:21,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159196355] [2020-10-14 09:04:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:25,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:26,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:04:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:04:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:04:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:27,634 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:04:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:27,703 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 09:04:27,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159196355] [2020-10-14 09:04:27,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:27,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:27,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406744725] [2020-10-14 09:04:27,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:04:27,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:27,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:04:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:04:27,706 INFO L87 Difference]: Start difference. First operand 3051 states and 4200 transitions. Second operand 10 states. [2020-10-14 09:04:28,256 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:04:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:33,439 INFO L93 Difference]: Finished difference Result 6391 states and 9295 transitions. [2020-10-14 09:04:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 09:04:33,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-14 09:04:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:33,456 INFO L225 Difference]: With dead ends: 6391 [2020-10-14 09:04:33,456 INFO L226 Difference]: Without dead ends: 5367 [2020-10-14 09:04:33,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-14 09:04:33,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2020-10-14 09:04:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 2728. [2020-10-14 09:04:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2728 states. [2020-10-14 09:04:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 3837 transitions. [2020-10-14 09:04:33,619 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 3837 transitions. Word has length 57 [2020-10-14 09:04:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:33,619 INFO L479 AbstractCegarLoop]: Abstraction has 2728 states and 3837 transitions. [2020-10-14 09:04:33,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:04:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 3837 transitions. [2020-10-14 09:04:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:04:33,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:33,622 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 09:04:33,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:04:33,623 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:33,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1175559912, now seen corresponding path program 1 times [2020-10-14 09:04:33,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:33,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21386746] [2020-10-14 09:04:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:38,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:04:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:04:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:04:38,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:39,228 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:39,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:39,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:39,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:39,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:04:39,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:39,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:39,284 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 09:04:39,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21386746] [2020-10-14 09:04:39,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:39,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:04:39,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633491191] [2020-10-14 09:04:39,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:04:39,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:04:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:04:39,286 INFO L87 Difference]: Start difference. First operand 2728 states and 3837 transitions. Second operand 9 states. [2020-10-14 09:04:39,830 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-14 09:04:46,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:46,027 INFO L93 Difference]: Finished difference Result 21258 states and 32751 transitions. [2020-10-14 09:04:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 09:04:46,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 09:04:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:46,070 INFO L225 Difference]: With dead ends: 21258 [2020-10-14 09:04:46,070 INFO L226 Difference]: Without dead ends: 19321 [2020-10-14 09:04:46,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-14 09:04:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2020-10-14 09:04:46,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 6975. [2020-10-14 09:04:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6975 states. [2020-10-14 09:04:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 10611 transitions. [2020-10-14 09:04:46,618 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 10611 transitions. Word has length 57 [2020-10-14 09:04:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:46,619 INFO L479 AbstractCegarLoop]: Abstraction has 6975 states and 10611 transitions. [2020-10-14 09:04:46,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:04:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 10611 transitions. [2020-10-14 09:04:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:46,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:46,622 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] [2020-10-14 09:04:46,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:04:46,622 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:46,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:46,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2108629905, now seen corresponding path program 1 times [2020-10-14 09:04:46,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:46,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400298430] [2020-10-14 09:04:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:47,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2056 [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:04:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:04:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:49,239 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:49,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:04:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:49,281 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 09:04:49,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400298430] [2020-10-14 09:04:49,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:49,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:49,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906082617] [2020-10-14 09:04:49,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:49,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:49,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:49,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:49,283 INFO L87 Difference]: Start difference. First operand 6975 states and 10611 transitions. Second operand 4 states. [2020-10-14 09:04:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:52,178 INFO L93 Difference]: Finished difference Result 15198 states and 23436 transitions. [2020-10-14 09:04:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:52,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 09:04:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:52,198 INFO L225 Difference]: With dead ends: 15198 [2020-10-14 09:04:52,198 INFO L226 Difference]: Without dead ends: 8956 [2020-10-14 09:04:52,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2020-10-14 09:04:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 8954. [2020-10-14 09:04:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8954 states. [2020-10-14 09:04:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8954 states to 8954 states and 13478 transitions. [2020-10-14 09:04:52,897 INFO L78 Accepts]: Start accepts. Automaton has 8954 states and 13478 transitions. Word has length 58 [2020-10-14 09:04:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 8954 states and 13478 transitions. [2020-10-14 09:04:52,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8954 states and 13478 transitions. [2020-10-14 09:04:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:52,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:52,905 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] [2020-10-14 09:04:52,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:04:52,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:52,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1198215639, now seen corresponding path program 1 times [2020-10-14 09:04:52,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:52,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787889623] [2020-10-14 09:04:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:53,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:54,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 09:04:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:04:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:04:54,941 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:04:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:04:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:04:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:04:54,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:04:54,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:04:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:04:54,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:04:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:04:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:04:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:04:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:04:54,977 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 09:04:54,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787889623] [2020-10-14 09:04:54,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:04:54,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:04:54,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888066303] [2020-10-14 09:04:54,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:04:54,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:04:54,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:04:54,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:54,980 INFO L87 Difference]: Start difference. First operand 8954 states and 13478 transitions. Second operand 4 states. [2020-10-14 09:04:57,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:04:57,687 INFO L93 Difference]: Finished difference Result 17610 states and 26811 transitions. [2020-10-14 09:04:57,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:04:57,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 09:04:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:04:57,708 INFO L225 Difference]: With dead ends: 17610 [2020-10-14 09:04:57,709 INFO L226 Difference]: Without dead ends: 9439 [2020-10-14 09:04:57,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:04:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9439 states. [2020-10-14 09:04:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9439 to 9437. [2020-10-14 09:04:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9437 states. [2020-10-14 09:04:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9437 states to 9437 states and 14027 transitions. [2020-10-14 09:04:58,507 INFO L78 Accepts]: Start accepts. Automaton has 9437 states and 14027 transitions. Word has length 58 [2020-10-14 09:04:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:04:58,508 INFO L479 AbstractCegarLoop]: Abstraction has 9437 states and 14027 transitions. [2020-10-14 09:04:58,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:04:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 9437 states and 14027 transitions. [2020-10-14 09:04:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 09:04:58,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:04:58,510 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] [2020-10-14 09:04:58,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:04:58,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:04:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:04:58,511 INFO L82 PathProgramCache]: Analyzing trace with hash 118295321, now seen corresponding path program 1 times [2020-10-14 09:04:58,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:04:58,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446895848] [2020-10-14 09:04:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:04:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:04:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:04:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:01,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:01,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2565 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:01,575 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:01,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:01,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:01,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:01,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:05:01,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:01,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:01,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:01,610 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 09:05:01,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446895848] [2020-10-14 09:05:01,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:01,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:01,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882283977] [2020-10-14 09:05:01,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:01,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:01,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:01,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:01,612 INFO L87 Difference]: Start difference. First operand 9437 states and 14027 transitions. Second operand 4 states. [2020-10-14 09:05:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:04,578 INFO L93 Difference]: Finished difference Result 23709 states and 35675 transitions. [2020-10-14 09:05:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:05:04,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 09:05:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:04,610 INFO L225 Difference]: With dead ends: 23709 [2020-10-14 09:05:04,610 INFO L226 Difference]: Without dead ends: 15075 [2020-10-14 09:05:04,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15075 states. [2020-10-14 09:05:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15075 to 10817. [2020-10-14 09:05:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10817 states. [2020-10-14 09:05:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10817 states to 10817 states and 15944 transitions. [2020-10-14 09:05:05,418 INFO L78 Accepts]: Start accepts. Automaton has 10817 states and 15944 transitions. Word has length 58 [2020-10-14 09:05:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:05,419 INFO L479 AbstractCegarLoop]: Abstraction has 10817 states and 15944 transitions. [2020-10-14 09:05:05,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10817 states and 15944 transitions. [2020-10-14 09:05:05,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:05:05,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:05,421 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] [2020-10-14 09:05:05,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:05:05,421 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash -333955574, now seen corresponding path program 1 times [2020-10-14 09:05:05,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:05,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388412233] [2020-10-14 09:05:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:05,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:09,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:09,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3641 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:05:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:09,741 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:09,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:09,775 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 09:05:09,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388412233] [2020-10-14 09:05:09,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:09,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:09,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640508013] [2020-10-14 09:05:09,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:09,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:09,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:09,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:09,777 INFO L87 Difference]: Start difference. First operand 10817 states and 15944 transitions. Second operand 9 states. [2020-10-14 09:05:10,334 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2020-10-14 09:05:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:14,445 INFO L93 Difference]: Finished difference Result 18478 states and 27401 transitions. [2020-10-14 09:05:14,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:14,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:05:14,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:14,480 INFO L225 Difference]: With dead ends: 18478 [2020-10-14 09:05:14,481 INFO L226 Difference]: Without dead ends: 18474 [2020-10-14 09:05:14,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:05:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2020-10-14 09:05:15,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 10813. [2020-10-14 09:05:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10813 states. [2020-10-14 09:05:15,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10813 states to 10813 states and 15940 transitions. [2020-10-14 09:05:15,263 INFO L78 Accepts]: Start accepts. Automaton has 10813 states and 15940 transitions. Word has length 60 [2020-10-14 09:05:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:15,264 INFO L479 AbstractCegarLoop]: Abstraction has 10813 states and 15940 transitions. [2020-10-14 09:05:15,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 10813 states and 15940 transitions. [2020-10-14 09:05:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:05:15,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:15,266 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] [2020-10-14 09:05:15,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:05:15,267 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:15,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:15,267 INFO L82 PathProgramCache]: Analyzing trace with hash 222953806, now seen corresponding path program 1 times [2020-10-14 09:05:15,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:15,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351017198] [2020-10-14 09:05:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:18,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:05:18,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:18,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2950 [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:05:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:18,861 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:18,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:18,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:18,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:18,895 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 09:05:18,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351017198] [2020-10-14 09:05:18,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:18,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:18,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105770897] [2020-10-14 09:05:18,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:18,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:18,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:18,898 INFO L87 Difference]: Start difference. First operand 10813 states and 15940 transitions. Second operand 9 states. [2020-10-14 09:05:19,437 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-14 09:05:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:23,820 INFO L93 Difference]: Finished difference Result 17948 states and 26630 transitions. [2020-10-14 09:05:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:23,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:05:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:23,846 INFO L225 Difference]: With dead ends: 17948 [2020-10-14 09:05:23,847 INFO L226 Difference]: Without dead ends: 17944 [2020-10-14 09:05:23,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 09:05:23,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2020-10-14 09:05:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 10809. [2020-10-14 09:05:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10809 states. [2020-10-14 09:05:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10809 states to 10809 states and 15935 transitions. [2020-10-14 09:05:24,773 INFO L78 Accepts]: Start accepts. Automaton has 10809 states and 15935 transitions. Word has length 60 [2020-10-14 09:05:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:24,773 INFO L479 AbstractCegarLoop]: Abstraction has 10809 states and 15935 transitions. [2020-10-14 09:05:24,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 10809 states and 15935 transitions. [2020-10-14 09:05:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:05:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:24,775 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] [2020-10-14 09:05:24,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:05:24,775 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1087512180, now seen corresponding path program 1 times [2020-10-14 09:05:24,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:24,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748315383] [2020-10-14 09:05:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:24,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:05:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2440 [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:05:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:27,864 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:27,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:27,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:27,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:27,892 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 09:05:27,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748315383] [2020-10-14 09:05:27,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:27,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 09:05:27,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117758661] [2020-10-14 09:05:27,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 09:05:27,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:27,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 09:05:27,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:05:27,894 INFO L87 Difference]: Start difference. First operand 10809 states and 15935 transitions. Second operand 9 states. [2020-10-14 09:05:28,408 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 317 [2020-10-14 09:05:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:32,926 INFO L93 Difference]: Finished difference Result 18644 states and 27350 transitions. [2020-10-14 09:05:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 09:05:32,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-14 09:05:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:32,952 INFO L225 Difference]: With dead ends: 18644 [2020-10-14 09:05:32,952 INFO L226 Difference]: Without dead ends: 18258 [2020-10-14 09:05:32,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-14 09:05:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18258 states. [2020-10-14 09:05:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18258 to 10797. [2020-10-14 09:05:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10797 states. [2020-10-14 09:05:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10797 states to 10797 states and 15921 transitions. [2020-10-14 09:05:33,914 INFO L78 Accepts]: Start accepts. Automaton has 10797 states and 15921 transitions. Word has length 60 [2020-10-14 09:05:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:33,914 INFO L479 AbstractCegarLoop]: Abstraction has 10797 states and 15921 transitions. [2020-10-14 09:05:33,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 09:05:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10797 states and 15921 transitions. [2020-10-14 09:05:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:05:33,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:33,917 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 09:05:33,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:05:33,917 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:33,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:33,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1610434306, now seen corresponding path program 1 times [2020-10-14 09:05:33,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:33,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753944021] [2020-10-14 09:05:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:33,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:35,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1925 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:05:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:36,348 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:36,376 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 09:05:36,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753944021] [2020-10-14 09:05:36,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:36,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:36,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384923862] [2020-10-14 09:05:36,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:36,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:36,378 INFO L87 Difference]: Start difference. First operand 10797 states and 15921 transitions. Second operand 4 states. [2020-10-14 09:05:36,927 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-14 09:05:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:40,339 INFO L93 Difference]: Finished difference Result 29032 states and 43005 transitions. [2020-10-14 09:05:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:40,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:05:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:40,360 INFO L225 Difference]: With dead ends: 29032 [2020-10-14 09:05:40,360 INFO L226 Difference]: Without dead ends: 19170 [2020-10-14 09:05:40,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19170 states. [2020-10-14 09:05:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19170 to 19168. [2020-10-14 09:05:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19168 states. [2020-10-14 09:05:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19168 states to 19168 states and 27963 transitions. [2020-10-14 09:05:41,922 INFO L78 Accepts]: Start accepts. Automaton has 19168 states and 27963 transitions. Word has length 67 [2020-10-14 09:05:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:41,923 INFO L479 AbstractCegarLoop]: Abstraction has 19168 states and 27963 transitions. [2020-10-14 09:05:41,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 19168 states and 27963 transitions. [2020-10-14 09:05:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 09:05:41,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:41,927 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, 1] [2020-10-14 09:05:41,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:05:41,928 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:41,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:41,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1938157721, now seen corresponding path program 1 times [2020-10-14 09:05:41,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:41,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108816634] [2020-10-14 09:05:41,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 09:05:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1417 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 09:05:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:43,875 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:43,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:43,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:43,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:43,921 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 09:05:43,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108816634] [2020-10-14 09:05:43,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:43,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:43,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105400666] [2020-10-14 09:05:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:43,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:43,923 INFO L87 Difference]: Start difference. First operand 19168 states and 27963 transitions. Second operand 4 states. [2020-10-14 09:05:44,528 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-14 09:05:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:49,530 INFO L93 Difference]: Finished difference Result 51160 states and 74789 transitions. [2020-10-14 09:05:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:49,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-14 09:05:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:49,564 INFO L225 Difference]: With dead ends: 51160 [2020-10-14 09:05:49,564 INFO L226 Difference]: Without dead ends: 32764 [2020-10-14 09:05:49,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32764 states. [2020-10-14 09:05:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32764 to 30868. [2020-10-14 09:05:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30868 states. [2020-10-14 09:05:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30868 states to 30868 states and 44729 transitions. [2020-10-14 09:05:53,295 INFO L78 Accepts]: Start accepts. Automaton has 30868 states and 44729 transitions. Word has length 68 [2020-10-14 09:05:53,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:53,295 INFO L479 AbstractCegarLoop]: Abstraction has 30868 states and 44729 transitions. [2020-10-14 09:05:53,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 30868 states and 44729 transitions. [2020-10-14 09:05:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:05:53,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:53,298 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, 1, 1] [2020-10-14 09:05:53,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:05:53,299 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash 988880556, now seen corresponding path program 1 times [2020-10-14 09:05:53,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:53,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576198701] [2020-10-14 09:05:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:05:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:05:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-10-14 09:05:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:54,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:05:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 09:05:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:54,653 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:05:54,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:54,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:54,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:54,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:54,692 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 09:05:54,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576198701] [2020-10-14 09:05:54,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:54,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:54,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926293964] [2020-10-14 09:05:54,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:54,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:54,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:54,694 INFO L87 Difference]: Start difference. First operand 30868 states and 44729 transitions. Second operand 6 states. [2020-10-14 09:05:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:59,344 INFO L93 Difference]: Finished difference Result 53682 states and 77856 transitions. [2020-10-14 09:05:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:05:59,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-14 09:05:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:59,375 INFO L225 Difference]: With dead ends: 53682 [2020-10-14 09:05:59,375 INFO L226 Difference]: Without dead ends: 25250 [2020-10-14 09:05:59,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25250 states. [2020-10-14 09:06:01,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25250 to 25246. [2020-10-14 09:06:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25246 states. [2020-10-14 09:06:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25246 states to 25246 states and 36379 transitions. [2020-10-14 09:06:01,814 INFO L78 Accepts]: Start accepts. Automaton has 25246 states and 36379 transitions. Word has length 69 [2020-10-14 09:06:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:01,814 INFO L479 AbstractCegarLoop]: Abstraction has 25246 states and 36379 transitions. [2020-10-14 09:06:01,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 25246 states and 36379 transitions. [2020-10-14 09:06:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:06:01,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:01,818 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, 1, 1, 1, 1] [2020-10-14 09:06:01,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:06:01,818 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:01,818 INFO L82 PathProgramCache]: Analyzing trace with hash -89827185, now seen corresponding path program 1 times [2020-10-14 09:06:01,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:01,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967136179] [2020-10-14 09:06:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:03,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:03,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:06:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:06:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1629 [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 09:06:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:03,958 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:06:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:03,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:03,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:03,998 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 09:06:03,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967136179] [2020-10-14 09:06:03,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:03,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:03,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250327266] [2020-10-14 09:06:03,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:04,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:04,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:04,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:04,000 INFO L87 Difference]: Start difference. First operand 25246 states and 36379 transitions. Second operand 4 states. [2020-10-14 09:06:04,511 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 318 [2020-10-14 09:06:11,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:11,446 INFO L93 Difference]: Finished difference Result 71178 states and 102497 transitions. [2020-10-14 09:06:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:06:11,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 09:06:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:11,494 INFO L225 Difference]: With dead ends: 71178 [2020-10-14 09:06:11,494 INFO L226 Difference]: Without dead ends: 46753 [2020-10-14 09:06:11,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:06:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46753 states. [2020-10-14 09:06:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46753 to 43223. [2020-10-14 09:06:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43223 states. [2020-10-14 09:06:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43223 states to 43223 states and 61845 transitions. [2020-10-14 09:06:17,230 INFO L78 Accepts]: Start accepts. Automaton has 43223 states and 61845 transitions. Word has length 71 [2020-10-14 09:06:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:17,231 INFO L479 AbstractCegarLoop]: Abstraction has 43223 states and 61845 transitions. [2020-10-14 09:06:17,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:06:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 43223 states and 61845 transitions. [2020-10-14 09:06:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 09:06:17,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:17,233 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, 1, 1, 1, 1, 1] [2020-10-14 09:06:17,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:06:17,233 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1221604583, now seen corresponding path program 1 times [2020-10-14 09:06:17,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:17,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860998691] [2020-10-14 09:06:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:17,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2082 [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:19,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:06:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:06:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:19,845 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:06:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:19,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:19,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:06:19,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:19,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:19,875 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 09:06:19,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860998691] [2020-10-14 09:06:19,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:19,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:19,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837209686] [2020-10-14 09:06:19,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:19,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:19,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:19,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:19,877 INFO L87 Difference]: Start difference. First operand 43223 states and 61845 transitions. Second operand 6 states. [2020-10-14 09:06:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:30,068 INFO L93 Difference]: Finished difference Result 77829 states and 109272 transitions. [2020-10-14 09:06:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:06:30,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-14 09:06:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:30,154 INFO L225 Difference]: With dead ends: 77829 [2020-10-14 09:06:30,154 INFO L226 Difference]: Without dead ends: 77827 [2020-10-14 09:06:30,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:06:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77827 states. [2020-10-14 09:06:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77827 to 45191. [2020-10-14 09:06:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45191 states. [2020-10-14 09:06:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45191 states to 45191 states and 63813 transitions. [2020-10-14 09:06:34,944 INFO L78 Accepts]: Start accepts. Automaton has 45191 states and 63813 transitions. Word has length 72 [2020-10-14 09:06:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:34,944 INFO L479 AbstractCegarLoop]: Abstraction has 45191 states and 63813 transitions. [2020-10-14 09:06:34,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 45191 states and 63813 transitions. [2020-10-14 09:06:34,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 09:06:34,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:34,946 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, 1, 1, 1, 1, 1, 1] [2020-10-14 09:06:34,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:06:34,947 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:34,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash -671075334, now seen corresponding path program 1 times [2020-10-14 09:06:34,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:34,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617977480] [2020-10-14 09:06:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2362 [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:06:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 09:06:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:06:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,807 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-14 09:06:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:37,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:37,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:37,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:06:37,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:37,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:37,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:37,838 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 09:06:37,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617977480] [2020-10-14 09:06:37,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:37,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:06:37,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153701297] [2020-10-14 09:06:37,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:06:37,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:37,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:06:37,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:06:37,840 INFO L87 Difference]: Start difference. First operand 45191 states and 63813 transitions. Second operand 4 states. [2020-10-14 09:06:38,347 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2020-10-14 09:06:49,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:49,352 INFO L93 Difference]: Finished difference Result 122987 states and 172618 transitions. [2020-10-14 09:06:49,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:06:49,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-14 09:06:49,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:49,439 INFO L225 Difference]: With dead ends: 122987 [2020-10-14 09:06:49,440 INFO L226 Difference]: Without dead ends: 78549 [2020-10-14 09:06:49,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:06:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78549 states.