/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=NARROWEST --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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:40:17,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:40:17,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:40:17,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:40:17,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:40:17,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:40:17,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:40:17,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:40:17,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:40:17,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:40:17,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:40:17,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:40:17,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:40:17,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:40:17,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:40:17,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:40:17,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:40:17,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:40:17,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:40:17,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:40:17,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:40:17,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:40:17,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:40:17,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:40:17,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:40:17,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:40:17,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:40:17,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:40:17,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:40:17,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:40:17,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:40:17,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:40:17,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:40:17,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:40:17,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:40:17,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:40:17,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:40:17,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:40:17,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:40:17,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:40:17,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:40:17,837 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 [2020-10-13 14:40:17,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:40:17,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:40:17,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:40:17,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:40:17,861 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:40:17,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:40:17,862 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:40:17,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:40:17,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:40:17,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:40:17,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:40:17,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:40:17,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:40:17,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:40:17,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:40:17,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:40:17,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:40:17,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:40:17,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:40:17,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:40:17,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:40:17,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:40:17,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:40:17,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:40:17,866 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:40:18,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:40:18,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:40:18,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:40:18,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:40:18,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:40:18,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:40:18,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb75a075b/497ae5a937bb4b62a5a1708aa0b0b240/FLAGeaa2d276f [2020-10-13 14:40:18,871 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:40:18,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:40:18,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb75a075b/497ae5a937bb4b62a5a1708aa0b0b240/FLAGeaa2d276f [2020-10-13 14:40:19,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb75a075b/497ae5a937bb4b62a5a1708aa0b0b240 [2020-10-13 14:40:19,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:40:19,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:40:19,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:40:19,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:40:19,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:40:19,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:40:19" (1/1) ... [2020-10-13 14:40:19,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d55f613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:19, skipping insertion in model container [2020-10-13 14:40:19,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:40:19" (1/1) ... [2020-10-13 14:40:19,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:40:19,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:40:20,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:40:20,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:40:20,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:40:20,840 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:40:20,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20 WrapperNode [2020-10-13 14:40:20,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:40:20,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:40:20,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:40:20,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:40:20,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:20,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:20,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:20,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:20,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:21,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:21,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (1/1) ... [2020-10-13 14:40:21,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:40:21,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:40:21,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:40:21,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:40:21,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (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 [2020-10-13 14:40:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:40:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:40:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:40:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:40:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:40:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:40:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:40:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:40:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:40:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:40:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:40:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:40:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:40:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:40:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:40:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:40:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:40:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:40:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:40:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:40:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:40:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:40:24,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:40:24,321 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:40:24,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:40:24 BoogieIcfgContainer [2020-10-13 14:40:24,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:40:24,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:40:24,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:40:24,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:40:24,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:40:19" (1/3) ... [2020-10-13 14:40:24,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ee018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:40:24, skipping insertion in model container [2020-10-13 14:40:24,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:40:20" (2/3) ... [2020-10-13 14:40:24,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202ee018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:40:24, skipping insertion in model container [2020-10-13 14:40:24,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:40:24" (3/3) ... [2020-10-13 14:40:24,340 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:40:24,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:40:24,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:40:24,373 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:40:24,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:40:24,401 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:40:24,401 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:40:24,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:40:24,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:40:24,402 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:40:24,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:40:24,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:40:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states. [2020-10-13 14:40:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:40:24,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:40:24,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:40:24,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:40:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:40:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1537336237, now seen corresponding path program 1 times [2020-10-13 14:40:24,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:40:24,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277976861] [2020-10-13 14:40:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:40:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:40:25,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:26,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:28,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:30,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:40:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:40:30,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:40:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:40:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:40:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:40:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:40:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:40:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:40:32,017 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:40:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:40:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:40:32,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:40:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:40:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:40:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 14:40:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:40:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:40:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:40:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:40:32,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:40:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:40:32,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277976861] [2020-10-13 14:40:32,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:40:32,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:40:32,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589166991] [2020-10-13 14:40:32,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:40:32,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:40:32,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:40:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:40:32,152 INFO L87 Difference]: Start difference. First operand 1107 states. Second operand 7 states. [2020-10-13 14:40:33,844 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:40:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:40:48,596 INFO L93 Difference]: Finished difference Result 3185 states and 5671 transitions. [2020-10-13 14:40:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:40:48,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-13 14:40:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:40:48,630 INFO L225 Difference]: With dead ends: 3185 [2020-10-13 14:40:48,630 INFO L226 Difference]: Without dead ends: 2095 [2020-10-13 14:40:48,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:40:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-10-13 14:40:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1816. [2020-10-13 14:40:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2020-10-13 14:40:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2538 transitions. [2020-10-13 14:40:48,815 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2538 transitions. Word has length 67 [2020-10-13 14:40:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:40:48,815 INFO L479 AbstractCegarLoop]: Abstraction has 1816 states and 2538 transitions. [2020-10-13 14:40:48,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:40:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2538 transitions. [2020-10-13 14:40:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:40:48,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:40:48,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:40:48,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:40:48,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:40:48,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:40:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash 683504486, now seen corresponding path program 1 times [2020-10-13 14:40:48,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:40:48,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202873234] [2020-10-13 14:40:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:40:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:40:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:49,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:51,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:40:53,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:40:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:40:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:40:53,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:40:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:40:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:40:53,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:40:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:40:55,595 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:40:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:40:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:40:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:40:55,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:40:55,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:40:55,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:40:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 14:40:55,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:40:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:40:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:40:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:40:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:40:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:40:55,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202873234] [2020-10-13 14:40:55,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:40:55,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:40:55,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204356122] [2020-10-13 14:40:55,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:40:55,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:40:55,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:40:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:40:55,681 INFO L87 Difference]: Start difference. First operand 1816 states and 2538 transitions. Second operand 6 states. [2020-10-13 14:41:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:41:04,955 INFO L93 Difference]: Finished difference Result 5764 states and 8651 transitions. [2020-10-13 14:41:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:41:04,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 14:41:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:41:04,991 INFO L225 Difference]: With dead ends: 5764 [2020-10-13 14:41:04,991 INFO L226 Difference]: Without dead ends: 4917 [2020-10-13 14:41:04,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:41:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2020-10-13 14:41:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 1843. [2020-10-13 14:41:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-10-13 14:41:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2564 transitions. [2020-10-13 14:41:05,121 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2564 transitions. Word has length 68 [2020-10-13 14:41:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:41:05,121 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2564 transitions. [2020-10-13 14:41:05,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:41:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2564 transitions. [2020-10-13 14:41:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:41:05,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:41:05,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:41:05,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:41:05,127 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:41:05,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:41:05,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1551769359, now seen corresponding path program 1 times [2020-10-13 14:41:05,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:41:05,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59315837] [2020-10-13 14:41:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:41:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:05,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:10,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:41:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:41:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:41:10,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:41:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 14:41:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:41:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:11,717 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:41:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:41:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:41:11,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:41:11,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:41:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:41:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:41:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:41:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:41:11,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59315837] [2020-10-13 14:41:11,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:41:11,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:41:11,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018136185] [2020-10-13 14:41:11,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:41:11,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:41:11,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:41:11,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:41:11,800 INFO L87 Difference]: Start difference. First operand 1843 states and 2564 transitions. Second operand 4 states. [2020-10-13 14:41:13,345 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:41:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:41:20,239 INFO L93 Difference]: Finished difference Result 3571 states and 5163 transitions. [2020-10-13 14:41:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:41:20,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:41:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:41:20,252 INFO L225 Difference]: With dead ends: 3571 [2020-10-13 14:41:20,252 INFO L226 Difference]: Without dead ends: 2627 [2020-10-13 14:41:20,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:41:20,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2020-10-13 14:41:20,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2619. [2020-10-13 14:41:20,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2020-10-13 14:41:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3701 transitions. [2020-10-13 14:41:20,369 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3701 transitions. Word has length 68 [2020-10-13 14:41:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:41:20,370 INFO L479 AbstractCegarLoop]: Abstraction has 2619 states and 3701 transitions. [2020-10-13 14:41:20,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:41:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3701 transitions. [2020-10-13 14:41:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:41:20,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:41:20,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:41:20,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:41:20,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:41:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:41:20,383 INFO L82 PathProgramCache]: Analyzing trace with hash 216346558, now seen corresponding path program 1 times [2020-10-13 14:41:20,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:41:20,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891520017] [2020-10-13 14:41:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:41:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:25,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:25,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:41:25,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:41:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:41:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:41:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 14:41:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:41:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:41:27,518 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:41:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:41:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:27,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:27,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:41:27,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:41:27,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 14:41:27,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:41:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:41:27,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:41:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:41:27,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891520017] [2020-10-13 14:41:27,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:41:27,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:41:27,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015873278] [2020-10-13 14:41:27,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:41:27,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:41:27,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:41:27,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:41:27,615 INFO L87 Difference]: Start difference. First operand 2619 states and 3701 transitions. Second operand 4 states. [2020-10-13 14:41:29,176 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:41:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:41:36,005 INFO L93 Difference]: Finished difference Result 5195 states and 7599 transitions. [2020-10-13 14:41:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:41:36,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:41:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:41:36,023 INFO L225 Difference]: With dead ends: 5195 [2020-10-13 14:41:36,023 INFO L226 Difference]: Without dead ends: 3810 [2020-10-13 14:41:36,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:41:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2020-10-13 14:41:36,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3673. [2020-10-13 14:41:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3673 states. [2020-10-13 14:41:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5271 transitions. [2020-10-13 14:41:36,189 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5271 transitions. Word has length 68 [2020-10-13 14:41:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:41:36,190 INFO L479 AbstractCegarLoop]: Abstraction has 3673 states and 5271 transitions. [2020-10-13 14:41:36,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:41:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5271 transitions. [2020-10-13 14:41:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:41:36,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:41:36,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:41:36,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:41:36,197 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:41:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:41:36,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1688306824, now seen corresponding path program 1 times [2020-10-13 14:41:36,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:41:36,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691161545] [2020-10-13 14:41:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:41:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:36,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:36,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:40,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:40,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:41,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:41:41,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:41:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:42,960 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:41:42,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:41:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:42,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:41:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:41:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:41:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:41:43,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691161545] [2020-10-13 14:41:43,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:41:43,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:41:43,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158877633] [2020-10-13 14:41:43,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:41:43,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:41:43,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:41:43,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:41:43,029 INFO L87 Difference]: Start difference. First operand 3673 states and 5271 transitions. Second operand 7 states. [2020-10-13 14:41:44,652 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:41:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:41:51,331 INFO L93 Difference]: Finished difference Result 23730 states and 35460 transitions. [2020-10-13 14:41:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:41:51,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:41:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:41:51,412 INFO L225 Difference]: With dead ends: 23730 [2020-10-13 14:41:51,412 INFO L226 Difference]: Without dead ends: 20468 [2020-10-13 14:41:51,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:41:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2020-10-13 14:41:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 14690. [2020-10-13 14:41:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14690 states. [2020-10-13 14:41:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14690 states to 14690 states and 21599 transitions. [2020-10-13 14:41:52,134 INFO L78 Accepts]: Start accepts. Automaton has 14690 states and 21599 transitions. Word has length 68 [2020-10-13 14:41:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:41:52,134 INFO L479 AbstractCegarLoop]: Abstraction has 14690 states and 21599 transitions. [2020-10-13 14:41:52,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:41:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 14690 states and 21599 transitions. [2020-10-13 14:41:52,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:41:52,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:41:52,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:41:52,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:41:52,146 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:41:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:41:52,147 INFO L82 PathProgramCache]: Analyzing trace with hash 576106037, now seen corresponding path program 1 times [2020-10-13 14:41:52,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:41:52,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873131379] [2020-10-13 14:41:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:41:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:52,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:52,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:52,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:57,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:57,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:41:57,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:41:57,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:41:57,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:41:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:41:57,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:41:57,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:58,705 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:41:58,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:41:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:41:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:41:58,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:41:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:41:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:41:58,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:41:58,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873131379] [2020-10-13 14:41:58,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:41:58,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:41:58,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330522704] [2020-10-13 14:41:58,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:41:58,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:41:58,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:41:58,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:41:58,757 INFO L87 Difference]: Start difference. First operand 14690 states and 21599 transitions. Second operand 7 states. [2020-10-13 14:42:00,339 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:42:09,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:42:09,368 INFO L93 Difference]: Finished difference Result 74342 states and 111626 transitions. [2020-10-13 14:42:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:42:09,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:42:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:42:09,533 INFO L225 Difference]: With dead ends: 74342 [2020-10-13 14:42:09,534 INFO L226 Difference]: Without dead ends: 63193 [2020-10-13 14:42:09,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:42:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63193 states. [2020-10-13 14:42:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63193 to 27457. [2020-10-13 14:42:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27457 states. [2020-10-13 14:42:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27457 states to 27457 states and 40627 transitions. [2020-10-13 14:42:11,153 INFO L78 Accepts]: Start accepts. Automaton has 27457 states and 40627 transitions. Word has length 68 [2020-10-13 14:42:11,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:42:11,153 INFO L479 AbstractCegarLoop]: Abstraction has 27457 states and 40627 transitions. [2020-10-13 14:42:11,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:42:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 27457 states and 40627 transitions. [2020-10-13 14:42:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:42:11,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:42:11,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:42:11,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:42:11,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:42:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:42:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1322724344, now seen corresponding path program 1 times [2020-10-13 14:42:11,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:42:11,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765227869] [2020-10-13 14:42:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:42:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:11,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:12,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 14:42:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:42:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:17,808 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:42:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:42:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:17,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:17,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:42:17,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:42:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:42:17,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765227869] [2020-10-13 14:42:17,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:42:17,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:42:17,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577957027] [2020-10-13 14:42:17,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:42:17,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:42:17,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:42:17,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:42:17,867 INFO L87 Difference]: Start difference. First operand 27457 states and 40627 transitions. Second operand 4 states. [2020-10-13 14:42:19,374 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:42:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:42:25,611 INFO L93 Difference]: Finished difference Result 72714 states and 107884 transitions. [2020-10-13 14:42:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:42:25,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:42:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:42:25,724 INFO L225 Difference]: With dead ends: 72714 [2020-10-13 14:42:25,725 INFO L226 Difference]: Without dead ends: 46422 [2020-10-13 14:42:25,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:42:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46422 states. [2020-10-13 14:42:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46422 to 39071. [2020-10-13 14:42:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39071 states. [2020-10-13 14:42:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39071 states to 39071 states and 57394 transitions. [2020-10-13 14:42:27,635 INFO L78 Accepts]: Start accepts. Automaton has 39071 states and 57394 transitions. Word has length 68 [2020-10-13 14:42:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:42:27,636 INFO L479 AbstractCegarLoop]: Abstraction has 39071 states and 57394 transitions. [2020-10-13 14:42:27,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:42:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 39071 states and 57394 transitions. [2020-10-13 14:42:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:42:27,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:42:27,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:42:27,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:42:27,647 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:42:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:42:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash -912549501, now seen corresponding path program 1 times [2020-10-13 14:42:27,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:42:27,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392304177] [2020-10-13 14:42:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:42:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:32,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:42:32,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:42:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:34,104 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:42:34,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:42:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:34,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:34,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:42:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:42:34,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:42:34,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:42:34,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392304177] [2020-10-13 14:42:34,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:42:34,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:42:34,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924917037] [2020-10-13 14:42:34,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:42:34,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:42:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:42:34,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:42:34,152 INFO L87 Difference]: Start difference. First operand 39071 states and 57394 transitions. Second operand 4 states. [2020-10-13 14:42:35,661 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:42:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:42:43,633 INFO L93 Difference]: Finished difference Result 102772 states and 151340 transitions. [2020-10-13 14:42:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:42:43,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:42:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:42:43,736 INFO L225 Difference]: With dead ends: 102772 [2020-10-13 14:42:43,736 INFO L226 Difference]: Without dead ends: 67956 [2020-10-13 14:42:43,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:42:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67956 states. [2020-10-13 14:42:46,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67956 to 67552. [2020-10-13 14:42:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67552 states. [2020-10-13 14:42:46,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67552 states to 67552 states and 98222 transitions. [2020-10-13 14:42:46,790 INFO L78 Accepts]: Start accepts. Automaton has 67552 states and 98222 transitions. Word has length 68 [2020-10-13 14:42:46,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:42:46,790 INFO L479 AbstractCegarLoop]: Abstraction has 67552 states and 98222 transitions. [2020-10-13 14:42:46,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:42:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 67552 states and 98222 transitions. [2020-10-13 14:42:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:42:46,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:42:46,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:42:46,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:42:46,808 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:42:46,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:42:46,809 INFO L82 PathProgramCache]: Analyzing trace with hash -969773681, now seen corresponding path program 1 times [2020-10-13 14:42:46,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:42:46,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005442217] [2020-10-13 14:42:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:42:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:46,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:48,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:51,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:42:51,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:42:53,347 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:42:53,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:42:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:42:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:42:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:42:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:42:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:42:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:42:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:42:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:42:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:42:53,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:42:53,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:42:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:42:53,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005442217] [2020-10-13 14:42:53,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:42:53,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:42:53,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413223208] [2020-10-13 14:42:53,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:42:53,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:42:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:42:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:42:53,402 INFO L87 Difference]: Start difference. First operand 67552 states and 98222 transitions. Second operand 6 states. [2020-10-13 14:43:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:43:08,848 INFO L93 Difference]: Finished difference Result 274636 states and 402156 transitions. [2020-10-13 14:43:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:43:08,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 14:43:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:43:09,252 INFO L225 Difference]: With dead ends: 274636 [2020-10-13 14:43:09,252 INFO L226 Difference]: Without dead ends: 218375 [2020-10-13 14:43:09,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:43:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218375 states. [2020-10-13 14:43:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218375 to 65461. [2020-10-13 14:43:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65461 states. [2020-10-13 14:43:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65461 states to 65461 states and 95197 transitions. [2020-10-13 14:43:16,403 INFO L78 Accepts]: Start accepts. Automaton has 65461 states and 95197 transitions. Word has length 68 [2020-10-13 14:43:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:43:16,404 INFO L479 AbstractCegarLoop]: Abstraction has 65461 states and 95197 transitions. [2020-10-13 14:43:16,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:43:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 65461 states and 95197 transitions. [2020-10-13 14:43:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:43:16,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:43:16,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:43:16,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:43:16,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:43:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:43:16,415 INFO L82 PathProgramCache]: Analyzing trace with hash 925816758, now seen corresponding path program 1 times [2020-10-13 14:43:16,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:43:16,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877230317] [2020-10-13 14:43:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:43:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:17,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:18,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:19,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:43:21,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:43:21,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:43:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:43:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:43:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:43:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:43:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:43:21,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:43:23,131 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:43:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:43:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:43:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:43:23,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:43:23,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:43:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:43:23,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877230317] [2020-10-13 14:43:23,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:43:23,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:43:23,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495257416] [2020-10-13 14:43:23,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:43:23,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:43:23,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:43:23,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:43:23,186 INFO L87 Difference]: Start difference. First operand 65461 states and 95197 transitions. Second operand 9 states. [2020-10-13 14:43:24,724 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 597 [2020-10-13 14:43:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:43:53,094 INFO L93 Difference]: Finished difference Result 353289 states and 513348 transitions. [2020-10-13 14:43:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:43:53,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-13 14:43:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:43:53,547 INFO L225 Difference]: With dead ends: 353289 [2020-10-13 14:43:53,547 INFO L226 Difference]: Without dead ends: 305297 [2020-10-13 14:43:53,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:43:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305297 states.