/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:24:57,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:24:57,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:24:57,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:24:57,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:24:57,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:24:57,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:24:57,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:24:57,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:24:57,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:24:57,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:24:57,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:24:57,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:24:57,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:24:57,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:24:57,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:24:57,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:24:57,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:24:57,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:24:57,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:24:57,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:24:57,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:24:57,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:24:57,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:24:57,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:24:57,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:24:57,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:24:57,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:24:57,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:24:57,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:24:57,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:24:57,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:24:57,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:24:57,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:24:57,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:24:57,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:24:57,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:24:57,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:24:57,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:24:57,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:24:57,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:24:57,699 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 [2020-10-15 03:24:57,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:24:57,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:24:57,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:24:57,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:24:57,724 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:24:57,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:24:57,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:24:57,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:24:57,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:24:57,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:24:57,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:24:57,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:24:57,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:24:57,729 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:24:57,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:24:57,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:24:57,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:24:57,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:24:57,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:24:57,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:24:57,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:24:57,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:24:57,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:24:57,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:24:57,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:24:57,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:24:57,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:24:57,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:24:57,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:24:57,735 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:24:58,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:24:58,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:24:58,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:24:58,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:24:58,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:24:58,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:24:58,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300e97275/9ecc5bf175ae46b597b2aa22ae148f7c/FLAGbab3bd06b [2020-10-15 03:24:58,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:24:58,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:24:58,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300e97275/9ecc5bf175ae46b597b2aa22ae148f7c/FLAGbab3bd06b [2020-10-15 03:24:58,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300e97275/9ecc5bf175ae46b597b2aa22ae148f7c [2020-10-15 03:24:58,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:24:58,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:24:58,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:24:58,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:24:58,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:24:58,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:58" (1/1) ... [2020-10-15 03:24:58,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4625cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:58, skipping insertion in model container [2020-10-15 03:24:58,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:58" (1/1) ... [2020-10-15 03:24:58,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:24:59,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:24:59,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:24:59,491 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:24:59,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:24:59,613 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:24:59,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59 WrapperNode [2020-10-15 03:24:59,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:24:59,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:24:59,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:24:59,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:24:59,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (1/1) ... [2020-10-15 03:24:59,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:24:59,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:24:59,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:24:59,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:24:59,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (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 [2020-10-15 03:24:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:24:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:24:59,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:24:59,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:24:59,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:24:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:24:59,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:24:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:24:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:24:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:24:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:24:59,746 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:24:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:24:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:24:59,747 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:24:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:24:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:24:59,748 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:24:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:24:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:24:59,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:24:59,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:25:00,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:25:00,343 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:25:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:00 BoogieIcfgContainer [2020-10-15 03:25:00,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:25:00,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:25:00,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:25:00,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:25:00,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:24:58" (1/3) ... [2020-10-15 03:25:00,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765210fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:00, skipping insertion in model container [2020-10-15 03:25:00,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:59" (2/3) ... [2020-10-15 03:25:00,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765210fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:00, skipping insertion in model container [2020-10-15 03:25:00,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:00" (3/3) ... [2020-10-15 03:25:00,362 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:25:00,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:25:00,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:25:00,399 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:25:00,433 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:25:00,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:25:00,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:25:00,434 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:25:00,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:25:00,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:25:00,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:25:00,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:25:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-15 03:25:00,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 03:25:00,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:00,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:00,486 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:00,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:00,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1959120292, now seen corresponding path program 1 times [2020-10-15 03:25:00,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:00,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404907843] [2020-10-15 03:25:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:02,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 03:25:05,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:25:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:25:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:05,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:25:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:25:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:25:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:25:06,368 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-15 03:25:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:06,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404907843] [2020-10-15 03:25:06,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:06,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:25:06,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082557440] [2020-10-15 03:25:06,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:25:06,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:25:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:25:06,568 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 8 states. [2020-10-15 03:25:07,000 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-15 03:25:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:08,050 INFO L93 Difference]: Finished difference Result 742 states and 1170 transitions. [2020-10-15 03:25:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:25:08,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-10-15 03:25:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:08,072 INFO L225 Difference]: With dead ends: 742 [2020-10-15 03:25:08,072 INFO L226 Difference]: Without dead ends: 638 [2020-10-15 03:25:08,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:25:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-15 03:25:08,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 156. [2020-10-15 03:25:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-15 03:25:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2020-10-15 03:25:08,179 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 63 [2020-10-15 03:25:08,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:08,180 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2020-10-15 03:25:08,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:25:08,180 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2020-10-15 03:25:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:08,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:08,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:08,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:25:08,188 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1285622915, now seen corresponding path program 1 times [2020-10-15 03:25:08,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:08,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47472886] [2020-10-15 03:25:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:08,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:08,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:08,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:08,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:25:13,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:13,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:25:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:13,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:25:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-15 03:25:13,554 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:13,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:13,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 03:25:13,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:13,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:13,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47472886] [2020-10-15 03:25:13,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:13,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:25:13,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106761803] [2020-10-15 03:25:13,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:25:13,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:25:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:25:13,659 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand 7 states. [2020-10-15 03:25:13,851 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:25:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:14,370 INFO L93 Difference]: Finished difference Result 465 states and 712 transitions. [2020-10-15 03:25:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:25:14,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-15 03:25:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:14,374 INFO L225 Difference]: With dead ends: 465 [2020-10-15 03:25:14,374 INFO L226 Difference]: Without dead ends: 347 [2020-10-15 03:25:14,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:25:14,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-15 03:25:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 159. [2020-10-15 03:25:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-15 03:25:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 229 transitions. [2020-10-15 03:25:14,407 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 229 transitions. Word has length 65 [2020-10-15 03:25:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:14,407 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 229 transitions. [2020-10-15 03:25:14,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:25:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 229 transitions. [2020-10-15 03:25:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:14,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:14,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:14,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:25:14,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1583607403, now seen corresponding path program 1 times [2020-10-15 03:25:14,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:14,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474047557] [2020-10-15 03:25:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:14,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:19,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:19,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:25:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:19,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:25:19,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:25:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:19,639 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:19,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:19,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:19,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:19,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:25:19,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:19,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:19,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:19,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:19,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474047557] [2020-10-15 03:25:19,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:19,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:25:19,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139158946] [2020-10-15 03:25:19,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:25:19,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:19,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:25:19,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:25:19,688 INFO L87 Difference]: Start difference. First operand 159 states and 229 transitions. Second operand 7 states. [2020-10-15 03:25:19,854 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:25:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:20,477 INFO L93 Difference]: Finished difference Result 451 states and 687 transitions. [2020-10-15 03:25:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:25:20,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-15 03:25:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:20,481 INFO L225 Difference]: With dead ends: 451 [2020-10-15 03:25:20,481 INFO L226 Difference]: Without dead ends: 333 [2020-10-15 03:25:20,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:25:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-15 03:25:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 221. [2020-10-15 03:25:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-15 03:25:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2020-10-15 03:25:20,506 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 65 [2020-10-15 03:25:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:20,506 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2020-10-15 03:25:20,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:25:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2020-10-15 03:25:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:20,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:20,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:20,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:25:20,508 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:20,509 INFO L82 PathProgramCache]: Analyzing trace with hash 625733375, now seen corresponding path program 1 times [2020-10-15 03:25:20,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:20,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108510421] [2020-10-15 03:25:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:20,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:23,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:23,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3211 [2020-10-15 03:25:23,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:23,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:25:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:25:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:25:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:23,982 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:24,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:24,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:24,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:24,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:25:24,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:24,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:24,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:24,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:24,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:24,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108510421] [2020-10-15 03:25:24,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:24,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:25:24,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217465035] [2020-10-15 03:25:24,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:25:24,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:25:24,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:25:24,049 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand 5 states. [2020-10-15 03:25:24,263 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:25:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:24,835 INFO L93 Difference]: Finished difference Result 618 states and 951 transitions. [2020-10-15 03:25:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:25:24,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-15 03:25:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:24,840 INFO L225 Difference]: With dead ends: 618 [2020-10-15 03:25:24,840 INFO L226 Difference]: Without dead ends: 500 [2020-10-15 03:25:24,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:25:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-15 03:25:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 496. [2020-10-15 03:25:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-15 03:25:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 756 transitions. [2020-10-15 03:25:24,905 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 756 transitions. Word has length 65 [2020-10-15 03:25:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:24,907 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 756 transitions. [2020-10-15 03:25:24,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:25:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 756 transitions. [2020-10-15 03:25:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:24,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:24,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:24,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:25:24,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash 645782718, now seen corresponding path program 1 times [2020-10-15 03:25:24,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:24,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167034474] [2020-10-15 03:25:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:25,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:25,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:28,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:25:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3300 [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:25:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:28,525 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:28,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:25:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:28,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:28,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167034474] [2020-10-15 03:25:28,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:28,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:25:28,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887840625] [2020-10-15 03:25:28,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:25:28,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:28,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:25:28,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:25:28,590 INFO L87 Difference]: Start difference. First operand 496 states and 756 transitions. Second operand 8 states. [2020-10-15 03:25:28,901 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:25:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:29,767 INFO L93 Difference]: Finished difference Result 2110 states and 3281 transitions. [2020-10-15 03:25:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:25:29,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-10-15 03:25:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:29,784 INFO L225 Difference]: With dead ends: 2110 [2020-10-15 03:25:29,784 INFO L226 Difference]: Without dead ends: 1774 [2020-10-15 03:25:29,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:25:29,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-10-15 03:25:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 496. [2020-10-15 03:25:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2020-10-15 03:25:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 753 transitions. [2020-10-15 03:25:29,859 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 753 transitions. Word has length 65 [2020-10-15 03:25:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:29,860 INFO L479 AbstractCegarLoop]: Abstraction has 496 states and 753 transitions. [2020-10-15 03:25:29,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:25:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 753 transitions. [2020-10-15 03:25:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:29,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:29,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:29,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:25:29,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:29,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:29,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1607352625, now seen corresponding path program 1 times [2020-10-15 03:25:29,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:29,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241734641] [2020-10-15 03:25:29,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:30,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:34,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:34,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:25:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:35,183 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:35,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:25:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:35,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:35,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241734641] [2020-10-15 03:25:35,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:35,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:25:35,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766502789] [2020-10-15 03:25:35,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:25:35,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:35,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:25:35,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:25:35,237 INFO L87 Difference]: Start difference. First operand 496 states and 753 transitions. Second operand 7 states. [2020-10-15 03:25:35,396 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:25:36,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:36,035 INFO L93 Difference]: Finished difference Result 1202 states and 1843 transitions. [2020-10-15 03:25:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:25:36,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-15 03:25:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:36,041 INFO L225 Difference]: With dead ends: 1202 [2020-10-15 03:25:36,041 INFO L226 Difference]: Without dead ends: 842 [2020-10-15 03:25:36,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:25:36,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-10-15 03:25:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 488. [2020-10-15 03:25:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-15 03:25:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 733 transitions. [2020-10-15 03:25:36,100 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 733 transitions. Word has length 65 [2020-10-15 03:25:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:36,100 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 733 transitions. [2020-10-15 03:25:36,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:25:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 733 transitions. [2020-10-15 03:25:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:36,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:36,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:36,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:25:36,102 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:36,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:36,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1979878519, now seen corresponding path program 1 times [2020-10-15 03:25:36,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:36,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849715804] [2020-10-15 03:25:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:37,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:41,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:41,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:41,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:25:41,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:41,356 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:25:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:41,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:41,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849715804] [2020-10-15 03:25:41,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:41,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:25:41,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794897083] [2020-10-15 03:25:41,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:25:41,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:25:41,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:25:41,408 INFO L87 Difference]: Start difference. First operand 488 states and 733 transitions. Second operand 7 states. [2020-10-15 03:25:41,569 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:25:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:42,214 INFO L93 Difference]: Finished difference Result 1286 states and 1963 transitions. [2020-10-15 03:25:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:25:42,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-15 03:25:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:42,219 INFO L225 Difference]: With dead ends: 1286 [2020-10-15 03:25:42,220 INFO L226 Difference]: Without dead ends: 894 [2020-10-15 03:25:42,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:25:42,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-10-15 03:25:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 480. [2020-10-15 03:25:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-15 03:25:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 713 transitions. [2020-10-15 03:25:42,277 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 713 transitions. Word has length 65 [2020-10-15 03:25:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:42,278 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 713 transitions. [2020-10-15 03:25:42,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:25:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 713 transitions. [2020-10-15 03:25:42,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:25:42,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:42,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:42,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:25:42,280 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:42,280 INFO L82 PathProgramCache]: Analyzing trace with hash 402730947, now seen corresponding path program 1 times [2020-10-15 03:25:42,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:42,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717740811] [2020-10-15 03:25:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:47,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:47,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:25:47,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:25:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:25:47,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:47,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:25:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:25:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:47,547 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:47,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:47,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:47,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:25:47,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:47,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:25:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:47,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717740811] [2020-10-15 03:25:47,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:47,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:25:47,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599288566] [2020-10-15 03:25:47,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:25:47,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:47,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:25:47,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:25:47,601 INFO L87 Difference]: Start difference. First operand 480 states and 713 transitions. Second operand 7 states. [2020-10-15 03:25:47,750 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:25:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:48,370 INFO L93 Difference]: Finished difference Result 1330 states and 2029 transitions. [2020-10-15 03:25:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:25:48,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-15 03:25:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:48,381 INFO L225 Difference]: With dead ends: 1330 [2020-10-15 03:25:48,382 INFO L226 Difference]: Without dead ends: 910 [2020-10-15 03:25:48,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:25:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2020-10-15 03:25:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 436. [2020-10-15 03:25:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-15 03:25:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 649 transitions. [2020-10-15 03:25:48,446 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 649 transitions. Word has length 65 [2020-10-15 03:25:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:48,447 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 649 transitions. [2020-10-15 03:25:48,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:25:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 649 transitions. [2020-10-15 03:25:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:25:48,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:48,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:25:48,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:25:48,448 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:48,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1457481571, now seen corresponding path program 1 times [2020-10-15 03:25:48,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:48,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134724457] [2020-10-15 03:25:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:25:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:50,232 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:50,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:50,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:50,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:50,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:25:50,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:50,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:50,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:50,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:50,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134724457] [2020-10-15 03:25:50,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:50,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:25:50,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166301741] [2020-10-15 03:25:50,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:25:50,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:50,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:25:50,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:25:50,260 INFO L87 Difference]: Start difference. First operand 436 states and 649 transitions. Second operand 4 states. [2020-10-15 03:25:50,417 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:25:50,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:50,948 INFO L93 Difference]: Finished difference Result 858 states and 1309 transitions. [2020-10-15 03:25:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:25:50,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 03:25:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:50,953 INFO L225 Difference]: With dead ends: 858 [2020-10-15 03:25:50,953 INFO L226 Difference]: Without dead ends: 606 [2020-10-15 03:25:50,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:25:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-15 03:25:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 604. [2020-10-15 03:25:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-10-15 03:25:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 915 transitions. [2020-10-15 03:25:51,049 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 915 transitions. Word has length 66 [2020-10-15 03:25:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:51,050 INFO L479 AbstractCegarLoop]: Abstraction has 604 states and 915 transitions. [2020-10-15 03:25:51,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:25:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 915 transitions. [2020-10-15 03:25:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:25:51,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:51,051 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] [2020-10-15 03:25:51,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:25:51,051 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 612368012, now seen corresponding path program 1 times [2020-10-15 03:25:51,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:51,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826112245] [2020-10-15 03:25:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:51,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:25:51,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:25:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:25:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:52,016 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:52,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826112245] [2020-10-15 03:25:52,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:52,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:25:52,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391677404] [2020-10-15 03:25:52,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:25:52,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:25:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:25:52,042 INFO L87 Difference]: Start difference. First operand 604 states and 915 transitions. Second operand 4 states. [2020-10-15 03:25:52,190 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:25:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:52,704 INFO L93 Difference]: Finished difference Result 1590 states and 2449 transitions. [2020-10-15 03:25:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:25:52,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 03:25:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:52,709 INFO L225 Difference]: With dead ends: 1590 [2020-10-15 03:25:52,709 INFO L226 Difference]: Without dead ends: 1056 [2020-10-15 03:25:52,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:25:52,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-15 03:25:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1047. [2020-10-15 03:25:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-15 03:25:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1595 transitions. [2020-10-15 03:25:52,847 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1595 transitions. Word has length 67 [2020-10-15 03:25:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:52,847 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1595 transitions. [2020-10-15 03:25:52,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:25:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1595 transitions. [2020-10-15 03:25:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:25:52,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:52,848 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] [2020-10-15 03:25:52,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:25:52,848 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:52,849 INFO L82 PathProgramCache]: Analyzing trace with hash 785307622, now seen corresponding path program 1 times [2020-10-15 03:25:52,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:52,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585012410] [2020-10-15 03:25:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:54,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:54,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:25:54,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:25:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 03:25:54,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:54,276 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:54,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:54,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:54,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:54,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585012410] [2020-10-15 03:25:54,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:54,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:25:54,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287031347] [2020-10-15 03:25:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:25:54,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:54,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:25:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:25:54,308 INFO L87 Difference]: Start difference. First operand 1047 states and 1595 transitions. Second operand 6 states. [2020-10-15 03:25:54,464 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:25:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:55,027 INFO L93 Difference]: Finished difference Result 3005 states and 4621 transitions. [2020-10-15 03:25:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:25:55,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:25:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:55,041 INFO L225 Difference]: With dead ends: 3005 [2020-10-15 03:25:55,041 INFO L226 Difference]: Without dead ends: 2021 [2020-10-15 03:25:55,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:25:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2020-10-15 03:25:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2019. [2020-10-15 03:25:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-15 03:25:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3087 transitions. [2020-10-15 03:25:55,361 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3087 transitions. Word has length 68 [2020-10-15 03:25:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:55,362 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3087 transitions. [2020-10-15 03:25:55,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:25:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3087 transitions. [2020-10-15 03:25:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:25:55,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:55,363 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] [2020-10-15 03:25:55,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:25:55,363 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash 256017121, now seen corresponding path program 1 times [2020-10-15 03:25:55,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:55,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144200682] [2020-10-15 03:25:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 03:25:55,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:25:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:55,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:55,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:25:55,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:55,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:25:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:25:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:55,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144200682] [2020-10-15 03:25:55,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:55,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:25:55,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827822934] [2020-10-15 03:25:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:25:55,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:55,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:25:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:25:55,906 INFO L87 Difference]: Start difference. First operand 2019 states and 3087 transitions. Second operand 4 states. [2020-10-15 03:25:56,096 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:25:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:56,912 INFO L93 Difference]: Finished difference Result 5622 states and 8612 transitions. [2020-10-15 03:25:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:25:56,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 03:25:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:56,932 INFO L225 Difference]: With dead ends: 5622 [2020-10-15 03:25:56,933 INFO L226 Difference]: Without dead ends: 3653 [2020-10-15 03:25:56,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:25:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-10-15 03:25:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3651. [2020-10-15 03:25:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3651 states. [2020-10-15 03:25:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 5538 transitions. [2020-10-15 03:25:57,488 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 5538 transitions. Word has length 68 [2020-10-15 03:25:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:25:57,488 INFO L479 AbstractCegarLoop]: Abstraction has 3651 states and 5538 transitions. [2020-10-15 03:25:57,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:25:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 5538 transitions. [2020-10-15 03:25:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:25:57,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:25:57,489 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] [2020-10-15 03:25:57,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:25:57,490 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:25:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:25:57,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2041661408, now seen corresponding path program 1 times [2020-10-15 03:25:57,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:25:57,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258229448] [2020-10-15 03:25:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:25:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:57,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:58,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:25:58,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:58,276 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:25:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:25:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:25:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:25:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:25:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:25:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:25:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:25:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:25:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:25:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:25:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:25:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:25:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:25:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:25:58,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258229448] [2020-10-15 03:25:58,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:25:58,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:25:58,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479691364] [2020-10-15 03:25:58,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:25:58,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:25:58,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:25:58,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:25:58,307 INFO L87 Difference]: Start difference. First operand 3651 states and 5538 transitions. Second operand 6 states. [2020-10-15 03:25:58,473 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:25:59,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:25:59,613 INFO L93 Difference]: Finished difference Result 10804 states and 16413 transitions. [2020-10-15 03:25:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:25:59,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:25:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:25:59,644 INFO L225 Difference]: With dead ends: 10804 [2020-10-15 03:25:59,644 INFO L226 Difference]: Without dead ends: 7201 [2020-10-15 03:25:59,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:25:59,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2020-10-15 03:26:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7199. [2020-10-15 03:26:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7199 states. [2020-10-15 03:26:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 10885 transitions. [2020-10-15 03:26:00,665 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 10885 transitions. Word has length 69 [2020-10-15 03:26:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:00,666 INFO L479 AbstractCegarLoop]: Abstraction has 7199 states and 10885 transitions. [2020-10-15 03:26:00,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 10885 transitions. [2020-10-15 03:26:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:26:00,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:00,667 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] [2020-10-15 03:26:00,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:26:00,667 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:00,667 INFO L82 PathProgramCache]: Analyzing trace with hash -183239419, now seen corresponding path program 1 times [2020-10-15 03:26:00,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:00,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537047210] [2020-10-15 03:26:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:00,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:00,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-15 03:26:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:26:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:01,074 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:26:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:01,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:01,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537047210] [2020-10-15 03:26:01,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:01,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:26:01,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3879830] [2020-10-15 03:26:01,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:26:01,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:01,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:26:01,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:26:01,102 INFO L87 Difference]: Start difference. First operand 7199 states and 10885 transitions. Second operand 4 states. [2020-10-15 03:26:01,252 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:26:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:02,856 INFO L93 Difference]: Finished difference Result 20195 states and 30439 transitions. [2020-10-15 03:26:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:26:02,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-15 03:26:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:02,899 INFO L225 Difference]: With dead ends: 20195 [2020-10-15 03:26:02,900 INFO L226 Difference]: Without dead ends: 13056 [2020-10-15 03:26:02,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:26:02,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2020-10-15 03:26:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 13047. [2020-10-15 03:26:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13047 states. [2020-10-15 03:26:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 19450 transitions. [2020-10-15 03:26:04,333 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 19450 transitions. Word has length 69 [2020-10-15 03:26:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:04,333 INFO L479 AbstractCegarLoop]: Abstraction has 13047 states and 19450 transitions. [2020-10-15 03:26:04,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:26:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 19450 transitions. [2020-10-15 03:26:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:26:04,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:04,334 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] [2020-10-15 03:26:04,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:26:04,334 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash 589296010, now seen corresponding path program 1 times [2020-10-15 03:26:04,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:04,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752921744] [2020-10-15 03:26:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:04,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:04,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:04,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:26:04,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:26:04,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:04,851 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:04,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:04,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:04,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:04,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:04,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:04,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752921744] [2020-10-15 03:26:04,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:04,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:04,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784607504] [2020-10-15 03:26:04,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:04,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:04,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:04,887 INFO L87 Difference]: Start difference. First operand 13047 states and 19450 transitions. Second operand 6 states. [2020-10-15 03:26:05,058 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-15 03:26:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:08,490 INFO L93 Difference]: Finished difference Result 38875 states and 57916 transitions. [2020-10-15 03:26:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:08,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:26:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:08,544 INFO L225 Difference]: With dead ends: 38875 [2020-10-15 03:26:08,544 INFO L226 Difference]: Without dead ends: 25881 [2020-10-15 03:26:08,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:26:08,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25881 states. [2020-10-15 03:26:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25881 to 25879. [2020-10-15 03:26:11,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25879 states. [2020-10-15 03:26:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25879 states to 25879 states and 38362 transitions. [2020-10-15 03:26:11,240 INFO L78 Accepts]: Start accepts. Automaton has 25879 states and 38362 transitions. Word has length 70 [2020-10-15 03:26:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:11,240 INFO L479 AbstractCegarLoop]: Abstraction has 25879 states and 38362 transitions. [2020-10-15 03:26:11,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 25879 states and 38362 transitions. [2020-10-15 03:26:11,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:26:11,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:11,241 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] [2020-10-15 03:26:11,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:26:11,242 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1454828399, now seen corresponding path program 1 times [2020-10-15 03:26:11,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:11,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987514652] [2020-10-15 03:26:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:26:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:26:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:11,585 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:11,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:11,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:11,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:11,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:11,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987514652] [2020-10-15 03:26:11,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:11,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:26:11,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201258820] [2020-10-15 03:26:11,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:26:11,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:11,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:26:11,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:26:11,609 INFO L87 Difference]: Start difference. First operand 25879 states and 38362 transitions. Second operand 4 states. [2020-10-15 03:26:11,766 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:26:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:16,813 INFO L93 Difference]: Finished difference Result 72411 states and 106652 transitions. [2020-10-15 03:26:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:26:16,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-15 03:26:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:16,884 INFO L225 Difference]: With dead ends: 72411 [2020-10-15 03:26:16,884 INFO L226 Difference]: Without dead ends: 46584 [2020-10-15 03:26:16,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:26:16,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46584 states. [2020-10-15 03:26:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46584 to 46570. [2020-10-15 03:26:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46570 states. [2020-10-15 03:26:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46570 states to 46570 states and 67689 transitions. [2020-10-15 03:26:22,811 INFO L78 Accepts]: Start accepts. Automaton has 46570 states and 67689 transitions. Word has length 70 [2020-10-15 03:26:22,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:22,811 INFO L479 AbstractCegarLoop]: Abstraction has 46570 states and 67689 transitions. [2020-10-15 03:26:22,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:26:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 46570 states and 67689 transitions. [2020-10-15 03:26:22,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:26:22,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:22,812 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] [2020-10-15 03:26:22,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:26:22,813 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:22,813 INFO L82 PathProgramCache]: Analyzing trace with hash -352953481, now seen corresponding path program 1 times [2020-10-15 03:26:22,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:22,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844032906] [2020-10-15 03:26:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:26:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:26:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:23,180 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:23,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:23,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:26:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:23,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844032906] [2020-10-15 03:26:23,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:23,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:23,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509854101] [2020-10-15 03:26:23,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:26:23,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:23,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:26:23,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:26:23,211 INFO L87 Difference]: Start difference. First operand 46570 states and 67689 transitions. Second operand 6 states. [2020-10-15 03:26:23,371 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:26:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:26:33,918 INFO L93 Difference]: Finished difference Result 138990 states and 201707 transitions. [2020-10-15 03:26:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:26:33,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:26:33,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:26:34,037 INFO L225 Difference]: With dead ends: 138990 [2020-10-15 03:26:34,037 INFO L226 Difference]: Without dead ends: 92460 [2020-10-15 03:26:34,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:26:34,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92460 states. [2020-10-15 03:26:45,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92460 to 92458. [2020-10-15 03:26:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92458 states. [2020-10-15 03:26:45,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92458 states to 92458 states and 133417 transitions. [2020-10-15 03:26:45,255 INFO L78 Accepts]: Start accepts. Automaton has 92458 states and 133417 transitions. Word has length 71 [2020-10-15 03:26:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:26:45,255 INFO L479 AbstractCegarLoop]: Abstraction has 92458 states and 133417 transitions. [2020-10-15 03:26:45,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:26:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 92458 states and 133417 transitions. [2020-10-15 03:26:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:26:45,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:26:45,256 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] [2020-10-15 03:26:45,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:26:45,257 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:26:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:26:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash -224868174, now seen corresponding path program 1 times [2020-10-15 03:26:45,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:26:45,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979909505] [2020-10-15 03:26:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:26:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:45,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:45,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:26:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-15 03:26:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:45,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:26:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-15 03:26:45,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:26:45,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:45,502 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:26:45,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:26:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:26:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:26:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:26:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:26:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:26:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:26:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:26:45,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979909505] [2020-10-15 03:26:45,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:26:45,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:26:45,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078851087] [2020-10-15 03:26:45,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:26:45,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:26:45,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:26:45,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:26:45,521 INFO L87 Difference]: Start difference. First operand 92458 states and 133417 transitions. Second operand 5 states. [2020-10-15 03:27:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:01,829 INFO L93 Difference]: Finished difference Result 150524 states and 216160 transitions. [2020-10-15 03:27:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:27:01,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-15 03:27:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:02,032 INFO L225 Difference]: With dead ends: 150524 [2020-10-15 03:27:02,032 INFO L226 Difference]: Without dead ends: 150522 [2020-10-15 03:27:02,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:27:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150522 states. [2020-10-15 03:27:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150522 to 94506. [2020-10-15 03:27:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94506 states. [2020-10-15 03:27:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94506 states to 94506 states and 134697 transitions. [2020-10-15 03:27:15,431 INFO L78 Accepts]: Start accepts. Automaton has 94506 states and 134697 transitions. Word has length 71 [2020-10-15 03:27:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:27:15,431 INFO L479 AbstractCegarLoop]: Abstraction has 94506 states and 134697 transitions. [2020-10-15 03:27:15,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:27:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 94506 states and 134697 transitions. [2020-10-15 03:27:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:27:15,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:27:15,439 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:27:15,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:27:15,439 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:27:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:27:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1622290575, now seen corresponding path program 1 times [2020-10-15 03:27:15,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:27:15,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958417134] [2020-10-15 03:27:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:27:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:15,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:20,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:20,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:27:20,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:27:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:27:20,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:20,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:27:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:27:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:27:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:20,621 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:27:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:27:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:27:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:27:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:27:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:27:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:27:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:27:20,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958417134] [2020-10-15 03:27:20,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:27:20,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:27:20,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102081916] [2020-10-15 03:27:20,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:27:20,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:27:20,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:27:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:27:20,652 INFO L87 Difference]: Start difference. First operand 94506 states and 134697 transitions. Second operand 6 states. [2020-10-15 03:27:20,817 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-15 03:27:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:27:43,830 INFO L93 Difference]: Finished difference Result 268368 states and 385106 transitions. [2020-10-15 03:27:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:27:43,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-15 03:27:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:27:44,074 INFO L225 Difference]: With dead ends: 268368 [2020-10-15 03:27:44,074 INFO L226 Difference]: Without dead ends: 173902 [2020-10-15 03:27:44,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:27:44,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173902 states. [2020-10-15 03:28:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173902 to 173866. [2020-10-15 03:28:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173866 states. [2020-10-15 03:28:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173866 states to 173866 states and 248105 transitions. [2020-10-15 03:28:07,136 INFO L78 Accepts]: Start accepts. Automaton has 173866 states and 248105 transitions. Word has length 97 [2020-10-15 03:28:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:28:07,136 INFO L479 AbstractCegarLoop]: Abstraction has 173866 states and 248105 transitions. [2020-10-15 03:28:07,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:28:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 173866 states and 248105 transitions. [2020-10-15 03:28:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:28:07,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:28:07,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:28:07,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:28:07,146 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:28:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:28:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1920275063, now seen corresponding path program 1 times [2020-10-15 03:28:07,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:28:07,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868361145] [2020-10-15 03:28:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:28:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:07,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:09,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:12,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:28:12,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:28:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:28:12,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:28:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:28:12,601 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-15 03:28:12,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:28:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:28:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:28:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:28:12,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:28:12,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:28:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:28:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:28:12,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:28:12,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:28:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:28:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:28:12,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868361145] [2020-10-15 03:28:12,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:28:12,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 03:28:12,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128094932] [2020-10-15 03:28:12,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:28:12,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:28:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:28:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:28:12,633 INFO L87 Difference]: Start difference. First operand 173866 states and 248105 transitions. Second operand 6 states. [2020-10-15 03:28:12,796 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 137