/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-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:49:36,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:49:36,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:49:36,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:49:36,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:49:36,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:49:36,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:49:36,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:49:36,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:49:36,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:49:36,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:49:36,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:49:36,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:49:36,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:49:36,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:49:36,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:49:36,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:49:36,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:49:36,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:49:36,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:49:36,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:49:36,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:49:36,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:49:36,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:49:36,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:49:36,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:49:36,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:49:36,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:49:36,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:49:36,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:49:36,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:49:36,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:49:36,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:49:36,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:49:36,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:49:36,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:49:36,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:49:36,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:49:36,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:49:36,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:49:36,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:49:36,755 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 03:49:36,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:49:36,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:49:36,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:49:36,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:49:36,779 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:49:36,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:49:36,779 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:49:36,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:49:36,780 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:49:36,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:49:36,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:49:36,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:49:36,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:49:36,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:49:36,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:49:36,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:49:36,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:49:36,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:49:36,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:49:36,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:49:36,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:49:36,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:49:36,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:49:36,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:49:36,783 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 03:49:37,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:49:37,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:49:37,151 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:49:37,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:49:37,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:49:37,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:49:37,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/500b7a9e8/d55127662797456d94a25946b043e137/FLAG042d039cb [2020-10-15 03:49:37,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:49:37,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:49:37,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/500b7a9e8/d55127662797456d94a25946b043e137/FLAG042d039cb [2020-10-15 03:49:38,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/500b7a9e8/d55127662797456d94a25946b043e137 [2020-10-15 03:49:38,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:49:38,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:49:38,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:49:38,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:49:38,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:49:38,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13275303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38, skipping insertion in model container [2020-10-15 03:49:38,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:49:38,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:49:38,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:49:38,475 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:49:38,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:49:38,730 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:49:38,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38 WrapperNode [2020-10-15 03:49:38,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:49:38,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:49:38,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:49:38,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:49:38,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (1/1) ... [2020-10-15 03:49:38,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:49:38,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:49:38,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:49:38,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:49:38,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (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 03:49:38,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:49:38,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:49:38,861 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:49:38,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:49:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:49:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:49:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:49:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:49:38,862 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:49:38,863 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:49:38,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:49:39,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:49:39,718 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:49:39,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:39 BoogieIcfgContainer [2020-10-15 03:49:39,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:49:39,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:49:39,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:49:39,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:49:39,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:49:38" (1/3) ... [2020-10-15 03:49:39,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa6ee8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:39, skipping insertion in model container [2020-10-15 03:49:39,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:38" (2/3) ... [2020-10-15 03:49:39,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa6ee8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:39, skipping insertion in model container [2020-10-15 03:49:39,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:39" (3/3) ... [2020-10-15 03:49:39,732 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-15 03:49:39,743 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:49:39,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:49:39,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:49:39,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:49:39,790 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:49:39,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:49:39,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:49:39,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:49:39,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:49:39,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:49:39,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:49:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-10-15 03:49:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:39,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:39,824 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 03:49:39,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:39,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:39,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1299417404, now seen corresponding path program 1 times [2020-10-15 03:49:39,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:39,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642919218] [2020-10-15 03:49:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:40,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:42,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:42,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:42,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-15 03:49:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:42,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:49:42,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:49:42,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:49:42,441 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:42,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:49:42,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:42,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:42,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:42,545 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 03:49:42,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642919218] [2020-10-15 03:49:42,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:42,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:42,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950933600] [2020-10-15 03:49:42,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:42,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:42,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:42,582 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 7 states. [2020-10-15 03:49:42,879 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:49:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:43,845 INFO L93 Difference]: Finished difference Result 650 states and 1046 transitions. [2020-10-15 03:49:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:49:43,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-15 03:49:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:43,869 INFO L225 Difference]: With dead ends: 650 [2020-10-15 03:49:43,869 INFO L226 Difference]: Without dead ends: 545 [2020-10-15 03:49:43,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:49:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-15 03:49:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 279. [2020-10-15 03:49:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-15 03:49:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 416 transitions. [2020-10-15 03:49:43,989 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 416 transitions. Word has length 69 [2020-10-15 03:49:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:43,990 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 416 transitions. [2020-10-15 03:49:43,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 416 transitions. [2020-10-15 03:49:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:49:43,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:43,996 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 03:49:43,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:49:43,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:43,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1350115301, now seen corresponding path program 1 times [2020-10-15 03:49:43,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:43,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625747661] [2020-10-15 03:49:43,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:44,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:49:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-15 03:49:44,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:44,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:49:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:49:44,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:49:44,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:45,086 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:45,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:45,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:45,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:49:45,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:45,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:45,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 03:49:45,146 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 03:49:45,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625747661] [2020-10-15 03:49:45,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:45,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:45,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889265918] [2020-10-15 03:49:45,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:45,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:45,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:45,151 INFO L87 Difference]: Start difference. First operand 279 states and 416 transitions. Second operand 7 states. [2020-10-15 03:49:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:46,167 INFO L93 Difference]: Finished difference Result 1017 states and 1560 transitions. [2020-10-15 03:49:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:46,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-15 03:49:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:46,178 INFO L225 Difference]: With dead ends: 1017 [2020-10-15 03:49:46,179 INFO L226 Difference]: Without dead ends: 805 [2020-10-15 03:49:46,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2020-10-15 03:49:46,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 799. [2020-10-15 03:49:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2020-10-15 03:49:46,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1215 transitions. [2020-10-15 03:49:46,290 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1215 transitions. Word has length 70 [2020-10-15 03:49:46,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:46,291 INFO L479 AbstractCegarLoop]: Abstraction has 799 states and 1215 transitions. [2020-10-15 03:49:46,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1215 transitions. [2020-10-15 03:49:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:46,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:46,294 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 03:49:46,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:49:46,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1026057547, now seen corresponding path program 1 times [2020-10-15 03:49:46,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:46,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813442648] [2020-10-15 03:49:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:46,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:46,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:46,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-15 03:49:46,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:46,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-15 03:49:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:47,078 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:47,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:47,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:47,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:49:47,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:47,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:47,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:47,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:47,158 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 03:49:47,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813442648] [2020-10-15 03:49:47,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:47,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:47,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507920865] [2020-10-15 03:49:47,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:47,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:47,161 INFO L87 Difference]: Start difference. First operand 799 states and 1215 transitions. Second operand 6 states. [2020-10-15 03:49:47,372 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:49:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:48,149 INFO L93 Difference]: Finished difference Result 2015 states and 3107 transitions. [2020-10-15 03:49:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:48,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:49:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:48,158 INFO L225 Difference]: With dead ends: 2015 [2020-10-15 03:49:48,158 INFO L226 Difference]: Without dead ends: 1321 [2020-10-15 03:49:48,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-15 03:49:48,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1319. [2020-10-15 03:49:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-10-15 03:49:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2015 transitions. [2020-10-15 03:49:48,270 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2015 transitions. Word has length 71 [2020-10-15 03:49:48,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:48,270 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 2015 transitions. [2020-10-15 03:49:48,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:48,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2015 transitions. [2020-10-15 03:49:48,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:48,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:48,274 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 03:49:48,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:49:48,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:48,275 INFO L82 PathProgramCache]: Analyzing trace with hash -679908380, now seen corresponding path program 1 times [2020-10-15 03:49:48,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:48,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661485704] [2020-10-15 03:49:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-15 03:49:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:49:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:49,125 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:49:49,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:49,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:49,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:49,168 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 03:49:49,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661485704] [2020-10-15 03:49:49,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:49,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:49,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235904262] [2020-10-15 03:49:49,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:49,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:49,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:49,171 INFO L87 Difference]: Start difference. First operand 1319 states and 2015 transitions. Second operand 6 states. [2020-10-15 03:49:49,316 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:49:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:50,250 INFO L93 Difference]: Finished difference Result 3626 states and 5578 transitions. [2020-10-15 03:49:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:50,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:49:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:50,264 INFO L225 Difference]: With dead ends: 3626 [2020-10-15 03:49:50,265 INFO L226 Difference]: Without dead ends: 2385 [2020-10-15 03:49:50,268 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 03:49:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2020-10-15 03:49:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2383. [2020-10-15 03:49:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2383 states. [2020-10-15 03:49:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3637 transitions. [2020-10-15 03:49:50,431 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3637 transitions. Word has length 71 [2020-10-15 03:49:50,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:50,431 INFO L479 AbstractCegarLoop]: Abstraction has 2383 states and 3637 transitions. [2020-10-15 03:49:50,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:50,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3637 transitions. [2020-10-15 03:49:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:50,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:50,433 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 03:49:50,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:49:50,434 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:50,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash -474937069, now seen corresponding path program 1 times [2020-10-15 03:49:50,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:50,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397578418] [2020-10-15 03:49:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:50,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:50,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:50,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:50,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-15 03:49:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:50,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:49:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:51,215 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:51,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:49:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:51,279 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 03:49:51,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397578418] [2020-10-15 03:49:51,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:51,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:51,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127132842] [2020-10-15 03:49:51,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:51,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:51,282 INFO L87 Difference]: Start difference. First operand 2383 states and 3637 transitions. Second operand 6 states. [2020-10-15 03:49:51,498 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:49:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:52,683 INFO L93 Difference]: Finished difference Result 6853 states and 10489 transitions. [2020-10-15 03:49:52,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:52,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:49:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:52,707 INFO L225 Difference]: With dead ends: 6853 [2020-10-15 03:49:52,707 INFO L226 Difference]: Without dead ends: 4525 [2020-10-15 03:49:52,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2020-10-15 03:49:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4523. [2020-10-15 03:49:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4523 states. [2020-10-15 03:49:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 6866 transitions. [2020-10-15 03:49:53,027 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 6866 transitions. Word has length 71 [2020-10-15 03:49:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:53,027 INFO L479 AbstractCegarLoop]: Abstraction has 4523 states and 6866 transitions. [2020-10-15 03:49:53,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 6866 transitions. [2020-10-15 03:49:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:49:53,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:53,030 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 03:49:53,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:49:53,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1749987906, now seen corresponding path program 1 times [2020-10-15 03:49:53,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:53,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072647781] [2020-10-15 03:49:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:49:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:49:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-15 03:49:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:53,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:49:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:53,690 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:53,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:49:53,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:53,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:53,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:53,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:53,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:49:53,768 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 03:49:53,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072647781] [2020-10-15 03:49:53,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:53,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:53,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742380283] [2020-10-15 03:49:53,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:53,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:53,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:53,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:53,772 INFO L87 Difference]: Start difference. First operand 4523 states and 6866 transitions. Second operand 6 states. [2020-10-15 03:49:54,043 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:49:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:55,319 INFO L93 Difference]: Finished difference Result 13174 states and 20006 transitions. [2020-10-15 03:49:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:55,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:49:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:55,360 INFO L225 Difference]: With dead ends: 13174 [2020-10-15 03:49:55,361 INFO L226 Difference]: Without dead ends: 8690 [2020-10-15 03:49:55,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8690 states. [2020-10-15 03:49:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8690 to 8688. [2020-10-15 03:49:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2020-10-15 03:49:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 13068 transitions. [2020-10-15 03:49:55,900 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 13068 transitions. Word has length 71 [2020-10-15 03:49:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:55,901 INFO L479 AbstractCegarLoop]: Abstraction has 8688 states and 13068 transitions. [2020-10-15 03:49:55,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 13068 transitions. [2020-10-15 03:49:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:49:55,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:55,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:55,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:49:55,911 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:55,912 INFO L82 PathProgramCache]: Analyzing trace with hash -393483888, now seen corresponding path program 1 times [2020-10-15 03:49:55,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:55,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629039650] [2020-10-15 03:49:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:55,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:58,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:58,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:49:58,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:49:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2178 [2020-10-15 03:49:58,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:58,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:49:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:49:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:49:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:58,519 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:49:58,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:49:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:58,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:58,573 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 03:49:58,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629039650] [2020-10-15 03:49:58,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:58,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:49:58,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898374593] [2020-10-15 03:49:58,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:49:58,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:49:58,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:49:58,576 INFO L87 Difference]: Start difference. First operand 8688 states and 13068 transitions. Second operand 9 states. [2020-10-15 03:49:58,766 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:50:03,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:03,189 INFO L93 Difference]: Finished difference Result 39247 states and 59034 transitions. [2020-10-15 03:50:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:50:03,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:50:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:03,301 INFO L225 Difference]: With dead ends: 39247 [2020-10-15 03:50:03,302 INFO L226 Difference]: Without dead ends: 36908 [2020-10-15 03:50:03,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2020-10-15 03:50:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36908 states. [2020-10-15 03:50:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36908 to 8688. [2020-10-15 03:50:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8688 states. [2020-10-15 03:50:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8688 states to 8688 states and 13067 transitions. [2020-10-15 03:50:04,209 INFO L78 Accepts]: Start accepts. Automaton has 8688 states and 13067 transitions. Word has length 72 [2020-10-15 03:50:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:04,210 INFO L479 AbstractCegarLoop]: Abstraction has 8688 states and 13067 transitions. [2020-10-15 03:50:04,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8688 states and 13067 transitions. [2020-10-15 03:50:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:50:04,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:04,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:04,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:50:04,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:04,214 INFO L82 PathProgramCache]: Analyzing trace with hash -924827152, now seen corresponding path program 1 times [2020-10-15 03:50:04,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:04,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753347632] [2020-10-15 03:50:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:05,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:50:05,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-15 03:50:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:05,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:50:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:06,073 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:06,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:06,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:06,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:06,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:50:06,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:06,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:06,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:06,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:06,115 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 03:50:06,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753347632] [2020-10-15 03:50:06,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:06,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:06,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511331309] [2020-10-15 03:50:06,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:06,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:06,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:06,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:06,118 INFO L87 Difference]: Start difference. First operand 8688 states and 13067 transitions. Second operand 9 states. [2020-10-15 03:50:06,299 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:50:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:11,168 INFO L93 Difference]: Finished difference Result 44292 states and 66634 transitions. [2020-10-15 03:50:11,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:50:11,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:50:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:11,277 INFO L225 Difference]: With dead ends: 44292 [2020-10-15 03:50:11,277 INFO L226 Difference]: Without dead ends: 39924 [2020-10-15 03:50:11,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:50:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39924 states. [2020-10-15 03:50:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39924 to 8877. [2020-10-15 03:50:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8877 states. [2020-10-15 03:50:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8877 states to 8877 states and 13319 transitions. [2020-10-15 03:50:12,287 INFO L78 Accepts]: Start accepts. Automaton has 8877 states and 13319 transitions. Word has length 72 [2020-10-15 03:50:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:12,288 INFO L479 AbstractCegarLoop]: Abstraction has 8877 states and 13319 transitions. [2020-10-15 03:50:12,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 8877 states and 13319 transitions. [2020-10-15 03:50:12,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:50:12,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:12,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:12,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:50:12,292 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:12,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash -963585456, now seen corresponding path program 1 times [2020-10-15 03:50:12,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:12,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326671531] [2020-10-15 03:50:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:14,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:14,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:50:14,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-10-15 03:50:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:14,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:50:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:14,435 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:14,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:14,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:14,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:14,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:14,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:50:14,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:14,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:14,469 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 03:50:14,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326671531] [2020-10-15 03:50:14,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:14,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:14,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133497723] [2020-10-15 03:50:14,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:14,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:14,472 INFO L87 Difference]: Start difference. First operand 8877 states and 13319 transitions. Second operand 9 states. [2020-10-15 03:50:14,648 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:50:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:21,067 INFO L93 Difference]: Finished difference Result 50046 states and 75135 transitions. [2020-10-15 03:50:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:50:21,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:50:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:21,165 INFO L225 Difference]: With dead ends: 50046 [2020-10-15 03:50:21,166 INFO L226 Difference]: Without dead ends: 43637 [2020-10-15 03:50:21,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:50:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43637 states. [2020-10-15 03:50:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43637 to 9074. [2020-10-15 03:50:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9074 states. [2020-10-15 03:50:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9074 states to 9074 states and 13570 transitions. [2020-10-15 03:50:22,358 INFO L78 Accepts]: Start accepts. Automaton has 9074 states and 13570 transitions. Word has length 72 [2020-10-15 03:50:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:22,358 INFO L479 AbstractCegarLoop]: Abstraction has 9074 states and 13570 transitions. [2020-10-15 03:50:22,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9074 states and 13570 transitions. [2020-10-15 03:50:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:50:22,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:22,363 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, 1, 1, 1, 1] [2020-10-15 03:50:22,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:50:22,363 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:22,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1816507056, now seen corresponding path program 1 times [2020-10-15 03:50:22,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:22,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345820167] [2020-10-15 03:50:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:22,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:23,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:50:23,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-15 03:50:23,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:23,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:23,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:50:23,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:24,101 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-15 03:50:24,319 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:24,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:24,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:24,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:24,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:50:24,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:24,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:24,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:24,371 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 03:50:24,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345820167] [2020-10-15 03:50:24,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:24,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:24,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034564943] [2020-10-15 03:50:24,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:24,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:24,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:24,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:24,375 INFO L87 Difference]: Start difference. First operand 9074 states and 13570 transitions. Second operand 9 states. [2020-10-15 03:50:24,647 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-15 03:50:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:32,660 INFO L93 Difference]: Finished difference Result 48340 states and 72324 transitions. [2020-10-15 03:50:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:50:32,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:50:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:32,718 INFO L225 Difference]: With dead ends: 48340 [2020-10-15 03:50:32,718 INFO L226 Difference]: Without dead ends: 40055 [2020-10-15 03:50:32,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:50:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40055 states. [2020-10-15 03:50:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40055 to 9208. [2020-10-15 03:50:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9208 states. [2020-10-15 03:50:34,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9208 states to 9208 states and 13714 transitions. [2020-10-15 03:50:34,229 INFO L78 Accepts]: Start accepts. Automaton has 9208 states and 13714 transitions. Word has length 72 [2020-10-15 03:50:34,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:34,229 INFO L479 AbstractCegarLoop]: Abstraction has 9208 states and 13714 transitions. [2020-10-15 03:50:34,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9208 states and 13714 transitions. [2020-10-15 03:50:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:50:34,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:34,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:34,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:50:34,234 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 249417697, now seen corresponding path program 1 times [2020-10-15 03:50:34,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:34,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154675977] [2020-10-15 03:50:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:34,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:50:34,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:34,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-15 03:50:34,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:34,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:50:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 03:50:34,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:50:34,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:34,536 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:34,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:34,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:50:34,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:34,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:34,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:34,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:50:34,576 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 03:50:34,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154675977] [2020-10-15 03:50:34,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:34,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:50:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179577966] [2020-10-15 03:50:34,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:50:34,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:34,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:50:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:50:34,579 INFO L87 Difference]: Start difference. First operand 9208 states and 13714 transitions. Second operand 5 states. [2020-10-15 03:50:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:37,821 INFO L93 Difference]: Finished difference Result 17434 states and 26035 transitions. [2020-10-15 03:50:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:50:37,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-15 03:50:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:37,843 INFO L225 Difference]: With dead ends: 17434 [2020-10-15 03:50:37,843 INFO L226 Difference]: Without dead ends: 17432 [2020-10-15 03:50:37,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 03:50:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17432 states. [2020-10-15 03:50:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17432 to 9464. [2020-10-15 03:50:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9464 states. [2020-10-15 03:50:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9464 states to 9464 states and 13970 transitions. [2020-10-15 03:50:39,605 INFO L78 Accepts]: Start accepts. Automaton has 9464 states and 13970 transitions. Word has length 73 [2020-10-15 03:50:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:39,605 INFO L479 AbstractCegarLoop]: Abstraction has 9464 states and 13970 transitions. [2020-10-15 03:50:39,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:50:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 9464 states and 13970 transitions. [2020-10-15 03:50:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:50:39,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:39,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:39,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:50:39,610 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1893937802, now seen corresponding path program 1 times [2020-10-15 03:50:39,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:39,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403777547] [2020-10-15 03:50:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:39,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:41,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:41,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:50:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:50:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:50:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:41,449 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:50:41,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:41,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:41,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:41,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:41,482 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 03:50:41,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403777547] [2020-10-15 03:50:41,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:41,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:41,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484800815] [2020-10-15 03:50:41,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:50:41,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:50:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:50:41,488 INFO L87 Difference]: Start difference. First operand 9464 states and 13970 transitions. Second operand 7 states. [2020-10-15 03:50:41,654 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:50:45,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:45,490 INFO L93 Difference]: Finished difference Result 26577 states and 39761 transitions. [2020-10-15 03:50:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:45,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:50:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:45,518 INFO L225 Difference]: With dead ends: 26577 [2020-10-15 03:50:45,518 INFO L226 Difference]: Without dead ends: 22463 [2020-10-15 03:50:45,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:50:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22463 states. [2020-10-15 03:50:47,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22463 to 15813. [2020-10-15 03:50:47,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15813 states. [2020-10-15 03:50:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 23442 transitions. [2020-10-15 03:50:47,743 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 23442 transitions. Word has length 74 [2020-10-15 03:50:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:47,744 INFO L479 AbstractCegarLoop]: Abstraction has 15813 states and 23442 transitions. [2020-10-15 03:50:47,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:50:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 23442 transitions. [2020-10-15 03:50:47,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:50:47,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:47,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:47,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:50:47,749 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:47,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:47,749 INFO L82 PathProgramCache]: Analyzing trace with hash -581438809, now seen corresponding path program 1 times [2020-10-15 03:50:47,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:47,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776922143] [2020-10-15 03:50:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:47,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:47,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:50:47,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-15 03:50:47,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:47,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:50:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:50:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:50:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:48,084 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:48,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:48,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:48,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:48,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:50:48,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:48,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:48,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:48,124 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 03:50:48,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776922143] [2020-10-15 03:50:48,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:48,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:50:48,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511069499] [2020-10-15 03:50:48,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:50:48,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:48,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:50:48,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:50:48,128 INFO L87 Difference]: Start difference. First operand 15813 states and 23442 transitions. Second operand 5 states. [2020-10-15 03:50:48,290 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-15 03:50:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:53,398 INFO L93 Difference]: Finished difference Result 41325 states and 61304 transitions. [2020-10-15 03:50:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:50:53,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-15 03:50:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:53,434 INFO L225 Difference]: With dead ends: 41325 [2020-10-15 03:50:53,435 INFO L226 Difference]: Without dead ends: 26859 [2020-10-15 03:50:53,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:50:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2020-10-15 03:50:57,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 26857. [2020-10-15 03:50:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26857 states. [2020-10-15 03:50:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26857 states to 26857 states and 39510 transitions. [2020-10-15 03:50:58,033 INFO L78 Accepts]: Start accepts. Automaton has 26857 states and 39510 transitions. Word has length 74 [2020-10-15 03:50:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:58,034 INFO L479 AbstractCegarLoop]: Abstraction has 26857 states and 39510 transitions. [2020-10-15 03:50:58,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:50:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 26857 states and 39510 transitions. [2020-10-15 03:50:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:50:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:58,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:58,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:50:58,038 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1148287064, now seen corresponding path program 1 times [2020-10-15 03:50:58,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:58,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051871249] [2020-10-15 03:50:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:59,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:50:59,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:50:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1438 [2020-10-15 03:50:59,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:59,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:50:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:50:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:50:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:59,672 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:50:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:59,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:50:59,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:59,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:59,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051871249] [2020-10-15 03:50:59,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:59,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:59,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10376125] [2020-10-15 03:50:59,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:50:59,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:59,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:50:59,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:50:59,705 INFO L87 Difference]: Start difference. First operand 26857 states and 39510 transitions. Second operand 7 states. [2020-10-15 03:50:59,883 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:51:07,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:07,443 INFO L93 Difference]: Finished difference Result 53834 states and 79373 transitions. [2020-10-15 03:51:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:51:07,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:51:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:07,495 INFO L225 Difference]: With dead ends: 53834 [2020-10-15 03:51:07,495 INFO L226 Difference]: Without dead ends: 49528 [2020-10-15 03:51:07,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:51:07,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49528 states. [2020-10-15 03:51:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49528 to 29056. [2020-10-15 03:51:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29056 states. [2020-10-15 03:51:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29056 states to 29056 states and 42717 transitions. [2020-10-15 03:51:11,873 INFO L78 Accepts]: Start accepts. Automaton has 29056 states and 42717 transitions. Word has length 74 [2020-10-15 03:51:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:11,873 INFO L479 AbstractCegarLoop]: Abstraction has 29056 states and 42717 transitions. [2020-10-15 03:51:11,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:51:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29056 states and 42717 transitions. [2020-10-15 03:51:11,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:51:11,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:11,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:11,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:51:11,877 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:11,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1532926198, now seen corresponding path program 1 times [2020-10-15 03:51:11,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:11,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144535619] [2020-10-15 03:51:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:12,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:12,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:51:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:13,221 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:51:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:13,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:13,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:13,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:13,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:51:13,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:13,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:13,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:13,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:13,313 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 03:51:13,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144535619] [2020-10-15 03:51:13,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:13,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:13,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742955307] [2020-10-15 03:51:13,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:51:13,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:13,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:51:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:51:13,316 INFO L87 Difference]: Start difference. First operand 29056 states and 42717 transitions. Second operand 7 states. [2020-10-15 03:51:13,535 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:51:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:22,273 INFO L93 Difference]: Finished difference Result 59070 states and 86977 transitions. [2020-10-15 03:51:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:51:22,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:51:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:22,327 INFO L225 Difference]: With dead ends: 59070 [2020-10-15 03:51:22,327 INFO L226 Difference]: Without dead ends: 50812 [2020-10-15 03:51:22,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:51:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50812 states. [2020-10-15 03:51:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50812 to 33325. [2020-10-15 03:51:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33325 states. [2020-10-15 03:51:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33325 states to 33325 states and 48985 transitions. [2020-10-15 03:51:27,201 INFO L78 Accepts]: Start accepts. Automaton has 33325 states and 48985 transitions. Word has length 74 [2020-10-15 03:51:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:27,201 INFO L479 AbstractCegarLoop]: Abstraction has 33325 states and 48985 transitions. [2020-10-15 03:51:27,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:51:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 33325 states and 48985 transitions. [2020-10-15 03:51:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:51:27,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:27,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:27,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:51:27,205 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:27,205 INFO L82 PathProgramCache]: Analyzing trace with hash -926563288, now seen corresponding path program 1 times [2020-10-15 03:51:27,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:27,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567032521] [2020-10-15 03:51:27,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:28,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:51:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:51:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1451 [2020-10-15 03:51:28,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:28,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:51:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:51:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:51:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:28,909 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:51:28,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:28,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:28,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:51:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:28,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:28,958 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 03:51:28,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567032521] [2020-10-15 03:51:28,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:28,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:28,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024819472] [2020-10-15 03:51:28,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:51:28,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:51:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:51:28,978 INFO L87 Difference]: Start difference. First operand 33325 states and 48985 transitions. Second operand 7 states. [2020-10-15 03:51:29,234 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-15 03:51:38,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:38,869 INFO L93 Difference]: Finished difference Result 67992 states and 100053 transitions. [2020-10-15 03:51:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:51:38,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-10-15 03:51:38,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:38,928 INFO L225 Difference]: With dead ends: 67992 [2020-10-15 03:51:38,928 INFO L226 Difference]: Without dead ends: 56134 [2020-10-15 03:51:38,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:51:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56134 states. [2020-10-15 03:51:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56134 to 38650. [2020-10-15 03:51:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38650 states. [2020-10-15 03:51:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38650 states to 38650 states and 56809 transitions. [2020-10-15 03:51:44,958 INFO L78 Accepts]: Start accepts. Automaton has 38650 states and 56809 transitions. Word has length 74 [2020-10-15 03:51:44,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:44,959 INFO L479 AbstractCegarLoop]: Abstraction has 38650 states and 56809 transitions. [2020-10-15 03:51:44,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:51:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 38650 states and 56809 transitions. [2020-10-15 03:51:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:51:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:44,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:44,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:51:44,963 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2140072015, now seen corresponding path program 1 times [2020-10-15 03:51:44,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:44,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952064404] [2020-10-15 03:51:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:45,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:51:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:51:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4911 [2020-10-15 03:51:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:51:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:50,159 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:51:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:51:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:50,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:50,219 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 03:51:50,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952064404] [2020-10-15 03:51:50,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:50,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:50,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617725708] [2020-10-15 03:51:50,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:50,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:50,229 INFO L87 Difference]: Start difference. First operand 38650 states and 56809 transitions. Second operand 8 states. [2020-10-15 03:51:50,418 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:52:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:20,306 INFO L93 Difference]: Finished difference Result 211219 states and 308100 transitions. [2020-10-15 03:52:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:52:20,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-15 03:52:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:20,536 INFO L225 Difference]: With dead ends: 211219 [2020-10-15 03:52:20,536 INFO L226 Difference]: Without dead ends: 173866 [2020-10-15 03:52:20,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:52:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173866 states. [2020-10-15 03:52:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173866 to 38860. [2020-10-15 03:52:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38860 states. [2020-10-15 03:52:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38860 states to 38860 states and 56773 transitions. [2020-10-15 03:52:29,359 INFO L78 Accepts]: Start accepts. Automaton has 38860 states and 56773 transitions. Word has length 77 [2020-10-15 03:52:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:29,359 INFO L479 AbstractCegarLoop]: Abstraction has 38860 states and 56773 transitions. [2020-10-15 03:52:29,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 38860 states and 56773 transitions. [2020-10-15 03:52:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:52:29,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:29,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:29,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:52:29,364 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 347457361, now seen corresponding path program 1 times [2020-10-15 03:52:29,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:29,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831720314] [2020-10-15 03:52:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:29,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:29,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4219 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-15 03:52:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:33,851 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:52:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:33,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:33,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:33,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:52:33,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:33,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:52:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:33,901 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 03:52:33,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831720314] [2020-10-15 03:52:33,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:33,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:52:33,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730919209] [2020-10-15 03:52:33,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:33,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:33,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:33,903 INFO L87 Difference]: Start difference. First operand 38860 states and 56773 transitions. Second operand 8 states. [2020-10-15 03:52:34,063 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-15 03:53:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:12,927 INFO L93 Difference]: Finished difference Result 239915 states and 348719 transitions. [2020-10-15 03:53:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:53:12,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-15 03:53:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:13,201 INFO L225 Difference]: With dead ends: 239915 [2020-10-15 03:53:13,201 INFO L226 Difference]: Without dead ends: 202280 [2020-10-15 03:53:13,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:53:13,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202280 states. [2020-10-15 03:53:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202280 to 38874. [2020-10-15 03:53:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38874 states. [2020-10-15 03:53:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38874 states to 38874 states and 56405 transitions. [2020-10-15 03:53:21,068 INFO L78 Accepts]: Start accepts. Automaton has 38874 states and 56405 transitions. Word has length 77 [2020-10-15 03:53:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:21,069 INFO L479 AbstractCegarLoop]: Abstraction has 38874 states and 56405 transitions. [2020-10-15 03:53:21,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 38874 states and 56405 transitions. [2020-10-15 03:53:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 03:53:21,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:21,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:53:21,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:53:21,074 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash 754574351, now seen corresponding path program 1 times [2020-10-15 03:53:21,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:21,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144685882] [2020-10-15 03:53:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:24,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:24,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3035 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:53:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:24,373 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-15 03:53:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:24,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:24,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:24,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:24,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:24,407 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 03:53:24,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144685882] [2020-10-15 03:53:24,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:24,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:53:24,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216324917] [2020-10-15 03:53:24,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:24,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:24,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:24,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:24,410 INFO L87 Difference]: Start difference. First operand 38874 states and 56405 transitions. Second operand 8 states. [2020-10-15 03:53:24,562 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134